2005 ED318 Planning
Background
2005 ED318 was discovered by LONEOS (Lowell Observatory in Flagstaff, AZ) on March 10, 2005.
It will approach within 0.016 AU (6.3 lunar distances) on May 23. On May 16,
Petr Pravec (Ondrejov Observatory, Czech Republic) reported that lightcurves obtained by
Ron Dyvig, Vishnu Reddy, Adrian Galad, Walt Cooney, John Gross, Dick Terrell, and
Felix Hormuth yield a rotation period of 17.15 hours.
Mike Nolan detected 2005 ED318 at Arecibo on May 12 and 13 and obtained an S-band bandwidth of only
about 0.2 Hz, which is consistent with the rotation period and the expected diameter of roughly
250 meters.
Goldstone tracks are scheduled on May 20, 23, 24, 25 and 27.
Additional Observations are scheduled at Arecibo on May 29, 30, and 31.
Due to its size and the proximity of its orbit to Earth's, 2005 ED318 has been classified
as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics
orbit type Amor
semimajor axis 1.852 AU
eccentricity 0.450
inclination 2.33°
perihelion distance 1.019 AU
aphelion distance 2.685 AU
absolute magnitude (H) 20.6
diameter ~200 meters
rotation period 17.15 h
pole direction unknown
lightcurve amplitude ~0.2 mag
spectral class unknown
Last updated: 2005 May 27
Discovery
M.P.E.C. 2005-G66 Issued 2005 Apr. 9, 21:48 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Supported in part by the Brinson Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
2005 ED318
Observations:
K05EV8D* C2005 03 10.32311 12 09 59.31 +09 06 39.5 19.3 R EG066699
K05EV8D C2005 03 10.34258 12 09 59.00 +09 06 51.5 EG066699
K05EV8D C2005 03 10.36203 12 09 58.64 +09 07 04.9 EG066699
K05EV8D C2005 03 10.38151 12 09 58.28 +09 07 18.2 EG066699
K05EV8D C2005 03 16.36728 12 08 47.04 +10 20 57.9 18.9 R EG066703
K05EV8D C2005 03 16.37436 12 08 46.85 +10 21 03.5 18.6 R EG066703
K05EV8D C2005 03 16.38143 12 08 46.61 +10 21 09.0 18.9 R EG066703
K05EV8D C2005 03 16.38851 12 08 46.47 +10 21 14.8 18.5 R EG066703
K05EV8D C2005 03 30.32647 12 02 57.10 +13 49 23.3 18.0 R EG066703
K05EV8D C2005 03 30.33505 12 02 56.71 +13 49 31.8 18.6 R EG066703
K05EV8D C2005 03 30.34361 12 02 56.31 +13 49 40.3 18.5 R EG066703
K05EV8D C2005 03 30.35220 12 02 55.91 +13 49 48.3 18.4 R EG066703
K05EV8D C2005 04 09.28500 11 57 52.23 +16 37 43.4 17.7 R EG066703
K05EV8D C2005 04 09.29311 11 57 51.84 +16 37 51.2 17.6 R EG066703
K05EV8D C2005 04 09.30125 11 57 51.40 +16 37 58.9 17.6 R EG066703
K05EV8D C2005 04 09.30940 11 57 51.08 +16 38 06.9 17.5 R EG066703
K05EV8D C2005 04 09.47454 11 57 47.64 +16 42 00.3 17.7 R EG066474
K05EV8D C2005 04 09.48218 11 57 47.30 +16 42 08.0 17.7 R EG066474
K05EV8D C2005 04 09.49294 11 57 46.83 +16 42 19.1 17.7 R EG066474
K05EV8D C2005 04 09.52074 11 57 46.62 +16 42 41.3 17.5 R EG066E12
K05EV8D C2005 04 09.52562 11 57 46.40 +16 42 46.0 18.1 R EG066E12
K05EV8D C2005 04 09.53052 11 57 46.15 +16 42 50.8 18.5 R EG066E12
K05EV8D C2005 04 09.53544 11 57 45.94 +16 42 56.5 18.8 R EG066E12
K05EV8D 3C2005 04 09.54430 11 57 42.73 +16 42 16.0 18.2 R EG066F65
K05EV8D 3C2005 04 09.54517 11 57 42.68 +16 42 16.7 18.1 R EG066F65
K05EV8D 3C2005 04 09.54598 11 57 42.63 +16 42 17.2 18.1 R EG066F65
K05EV8D C2005 04 09.74956 11 57 41.79 +16 45 26.7 17.7 R EG066A50
K05EV8D C2005 04 09.75103 11 57 41.75 +16 45 27.6 17.9 R EG066A50
K05EV8D C2005 04 09.75176 11 57 41.74 +16 45 29.2 17.9 R EG066A50
K05EV8D C2005 04 09.75250 11 57 41.67 +16 45 29.8 17.9 R EG066A50
K05EV8D C2005 04 09.75470 11 57 41.63 +16 45 32.3 18.0 R EG066A50
K05EV8D C2005 04 09.83759 11 57 39.02 +16 46 59.7 17.9 R EG066A17
K05EV8D C2005 04 09.85301 11 57 38.41 +16 47 15.9 18.1 R EG066A17
K05EV8D C2005 04 09.87097 11 57 37.66 +16 47 35.1 18.0 R EG066A17
Observer details:
474 Mount John Observatory, Lake Tekapo. Observers A. C. Gilmore,
P. M. Kilmartin. Measurer P. M. Kilmartin. 1.0-m f/7.7 reflector + CCD.
699 Lowell Observatory-LONEOS. Observer B. A. Skiff. 0.59-m LONEOS Schmidt
+ CCD.
703 Catalina Sky Survey. Observers R. Hill, E. J. Christensen. Measurers
E. C. Beshore, C. M. Casey, E. J. Christensen, G. J. Garradd, R. E. Hill,
S. M. Larson, R. H. McNaught, A. D. Grauer. 0.68-m Schmidt + CCD.
A17 Guidestar Observatory, Weinheim. Observers M. Emmerich, S. Melchert.
0.36-m f/6 Schmidt-Cassegrain + CCD.
A50 Andrushivka Astronomical Observatory. Observers O. Gerashchenko,
Y. Ivashchenko, D. Kyrylenko. 0.6-m f/2.4 reflector + CCD.
E12 Siding Spring Survey. Observer R. H. McNaught. Measurers E. C. Beshore,
C. M. Casey, E. J. Christensen, G. J. Garradd, A. D. Grauer, R. E. Hill,
S. M. Larson, R. H. McNaught. 0.5-m Uppsala Schmidt + CCD.
F65 Haleakala-Faulkes Telescope North. Observers M. Busch, F. Hormuth,
L. Kurtze. 2.0-m Ritchey-Chretien + CCD
Orbital elements:
2005 ED318 PHA 0.012
Epoch 2005 Jan. 30.0 TT = JDT 2453400.5 MPC
M 314.48085 (2000.0) P Q
n 0.39056526 Peri. 163.22271 -0.40523857 +0.91332272
a 1.8535614 Node 82.85641 -0.84336552 -0.35646134
e 0.4501482 Incl. 2.32716 -0.35286866 -0.19691857
P 2.52 H 20.8 G 0.15 U 6
Residuals in seconds of arc
050310 699 0.8+ 0.7+ 050409 703 0.1- 0.6+ 050409 F65 0.2- 0.3+
050310 699 0.8+ 0.6- 050409 703 0.3- 0.2+ 050409 F65 0.5- 0.1+
050310 699 0.1+ 0.4- 050409 703 1.1- 0.4- 050409 A50 0.3+ 0.1-
050310 699 0.6- 0.3- 050409 703 0.3- 0.7- 050409 A50 0.5+ 0.8-
050316 703 0.1- 0.1+ 050409 474 0.5+ 0.3+ 050409 A50 0.8+ 0.1+
050316 703 0.0 0.1+ 050409 474 0.5+ 0.1+ 050409 A50 0.2+ 0.1-
050316 703 0.7- 0.1+ 050409 474 0.5+ 0.1+ 050409 A50 0.8+ 0.0
050316 703 0.1+ 0.3+ 050409 E12 0.1+ 0.3+ 050409 A17 0.2- 0.2+
050330 703 0.2+ 0.3- 050409 E12 0.3+ 0.1- 050409 A17 0.1- 0.1-
050330 703 0.2+ 0.1- 050409 E12 0.0 0.4- 050409 A17 0.3- 0.1+
050330 703 0.0 0.2+ 050409 E12 0.3+ 0.2+
050330 703 0.1- 0.1- 050409 F65 0.0 0.5+
Ephemeris:
2005 ED318 a,e,i = 1.85, 0.45, 2 q = 1.0192
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 04 10 11 57.56 +16 50.3 0.163 1.144 148.8 27.0 18.4
2005 04 20 11 54.98 +19 45.3 0.124 1.099 137.6 38.0 18.0
2005 04 30 11 59.29 +23 01.7 0.0875 1.063 127.4 48.9 17.5
2005 05 10 12 22.14 +28 07.5 0.0526 1.036 119.2 58.2 16.6
2005 05 20 14 46.45 +40 55.4 0.0213 1.022 117.5 61.4 14.7
2005 05 30 21 28.58 +04 42.7 0.0280 1.020 101.8 76.6 15.8
2005 06 09 22 27.63 -09 07.4 0.0607 1.030 102.9 73.8 17.4
2005 06 19 22 42.25 -13 24.4 0.0943 1.053 110.7 64.5 18.1
2005 06 29 22 44.76 -15 50.8 0.127 1.086 120.4 53.8 18.5
2005 07 09 22 39.85 -17 46.9 0.160 1.129 131.4 42.5 18.7
2005 07 19 22 29.63 -19 26.8 0.195 1.178 143.4 30.9 18.9
2005 07 29 22 16.41 -20 45.4 0.235 1.233 155.6 19.8 19.1
2005 08 08 22 02.66 -21 36.0 0.284 1.292 166.8 10.3 19.3
2005 08 18 21 51.01 -21 54.6 0.344 1.353 171.2 6.5 19.6
2005 08 28 21 43.07 -21 44.3 0.417 1.416 164.2 11.2 20.4
2005 09 07 21 39.30 -21 11.5 0.504 1.480 154.9 16.8 21.1
2005 09 17 21 39.61 -20 21.9 0.604 1.543 145.9 21.4 21.7
Timothy B. Spahr (C) Copyright 2005 MPC M.P.E.C. 2005-G66
SNR Calculation
Updated 2005 May 16 to reflect new information about the rotation period.
Hmag = 20.6
Diameter = 0.240 km
Period = 17.15 h (Pravec et al., unpublished)
------------GOLDSTONE---------- -------------ARECIBO-----------
Max Max
Dat Run UTC Dat Run UTC
Date RA Decl Delta Runs SNR SNR Window Runs SNR SNR Window
2005 4 26 179 22 0.102 187 7 1 0:12-10:48 47 153 24 0:48- 3:30
2005 4 27 179 22 0.098 194 8 1 0:12-10:48 48 176 27 0:48- 3:30
2005 4 28 179 22 0.095 201 9 1 0:06-10:41 50 204 30 0:42- 3:23
2005 4 29 180 23 0.091 209 11 1 0:00-10:41 51 236 35 0:42- 3:23
2005 4 30 180 23 0.088 218 13 1 23:53-34:36 53 276 40 0:36- 3:17
2005 5 1 180 23 0.084 227 15 1 23:48-34:36 55 325 46 0:36- 3:12
2005 5 2 180 24 0.080 236 18 1 23:48-34:36 57 384 54 0:36- 3:12
2005 5 3 181 24 0.077 247 22 2 23:41-34:36 59 457 63 0:30- 3:12
2005 5 4 181 25 0.073 258 26 2 23:36-34:30 61 547 74 0:30- 3:06
2005 5 5 182 25 0.070 271 32 2 23:36-34:30 64 662 88 0:30- 3:06
2005 5 6 182 26 0.066 285 39 3 23:30-34:30 66 805 105 0:24- 3:00
2005 5 7 183 26 0.063 300 48 3 23:30-34:30 69 990 127 0:24- 3:00
2005 5 8 184 27 0.059 316 60 4 23:30-34:30 71 1226 155 0:24- 3:00
2005 5 9 185 27 0.056 335 76 5 23:23-34:36 74 1539 191 0:30- 2:53
2005 5 10 186 28 0.053 356 98 6 23:23-34:36 77 1951 238 0:30- 2:53
2005 5 11 187 29 0.049 379 128 7 23:23-34:36 80 2504 301 0:30- 2:53
2005 5 12 188 30 0.046 405 170 9 23:23-34:42 83 3252 387 0:36- 2:53
2005 5 13 190 31 0.042 435 230 12 23:23-34:47 85 4265 505 0:42- 2:53
2005 5 14 192 32 0.039 469 317 16 23:23-34:53 86 5635 672 0:48- 2:53
2005 5 15 194 33 0.036 508 447 22 23:23-35:06 87 7457 912 1:00- 2:53
2005 5 16 198 34 0.033 553 646 31 23:30-35:17 84 9478 1178 1:11- 2:53
2005 5 17 201 36 0.030 605 958 43 23:36-35:30 77 11655 1482 1:36- 3:00
2005 5 18 206 38 0.027 665 1453 63 23:48-35:53 58 12642 1764 2:12- 2:53
2005 5 19 213 39 0.024 700 2220 93 0:12-12:18 0 0 0 -
2005 5 20 222 41 0.021 700 3328 137 0:36-12:54 0 0 0 -
2005 5 21 233 42 0.019 700 4832 198 1:11-13:41 0 0 0 -
2005 5 22 247 42 0.018 700 6577 271 2:06-14:30 0 0 0 -
2005 5 23 262 39 0.017 700 8002 331 3:12-15:24 0 0 0 -
2005 5 24 277 35 0.016 700 8343 345 4:17-16:06 131 128338 12664 6:05- 7:42
2005 5 25 290 29 0.017 700 7413 303 5:24-16:36 179 155475 12504 6:30- 8:48
2005 5 26 300 23 0.018 700 5701 233 6:17-16:53 190 125251 9593 6:54- 9:35
2005 5 27 308 17 0.020 686 3923 164 7:00-17:06 176 85442 6774 7:24-10:05
2005 5 28 314 12 0.023 609 2523 112 7:30-17:11 155 54226 4616 7:47-10:18
2005 5 29 319 8 0.025 543 1611 76 7:54-17:18 129 33026 3130 8:11-10:24
2005 5 30 322 5 0.028 486 1041 52 8:18-17:18 102 19517 2147 8:30-10:24
2005 5 31 325 2 0.031 438 688 36 8:30-17:18 77 10596 1368 8:48-10:18
2005 6 1 327 -0 0.034 397 466 26 8:41-17:18 52 5305 805 9:11-10:11
2005 6 2 329 -2 0.037 363 323 19 8:54-17:18 20 2036 462 -
2005 6 3 331 -3 0.041 333 230 14 9:00-17:11 0 0 0 -
2005 6 4 332 -5 0.044 308 167 11 9:05-17:11 0 0 0 -
2005 6 5 334 -6 0.047 286 124 8 9:11-17:06 0 0 0 -
Goldstone Track Assignments
2005 ED318 Goldstone tracks
Transmit
UT UT PST or PDT Duration
DOY Date TX Window TX Window hh:mm
--- ---- --------- ------------- -------
140 May 20 0125 0745 1825-0045 PDT Thu-Fri May 19-20 6:20
143 May 23 0945 1430 0245-0730 PDT Mon May 23 4:45
144 May 24 0450 0725 2150-0025 PDT Mon-Tue May 23-24 2:35
145 May 25 0730 0925 0030-0225 PDT Wed May 25 1:55
147 May 27 1005 1335 0305-0635 PDT Fri May 27 3:30 BISTATIC DSS14 -> DSS13
150 May 30 0836 1000 0136-0300 PDT Mon May 30 1:24 BISTATIC Arecibo -> DSS14
-----
20:29
2005 ED318 Arecibo Tracks
148 May 28 0730-1000 0030-0300 PDT Sat May 29 2:30 Arecibo -> GBT
149 May 29 0815-1000 0115-0300 PDT Sun May 29 1:45 Arecibo -> GBT
150 May 30 0836-1000 0136-0300 PDT Mon May 30 1:24 Arecibo -> GSSR
151 May 31 0857-0945 0157-0245 PDT Tue May 31 1:18 CANCELLED
-----
5:15
2005 ED318 was also observed at Arecibo briefly on May 12 and 13.
Total sky motion between May 12-31 is more than 100 degrees.
Sky Motion
Uncertainties
From Horizons (2005 May 2, solution 11, 103 observations spanning 51 days):
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
2005-May-15 00:00 *m 194.55169 32.96352 0.0356519351 32.9028596 42.82 153.14 0.040278
2005-May-16 00:00 *m 197.67580 34.33083 0.0324651147 43.2439901 41.50 148.45 0.038539
2005-May-17 00:00 *m 201.62129 35.86207 0.0293772124 57.3815189 39.73 142.11 0.036719
2005-May-18 00:00 *m 206.69067 37.54098 0.0264251335 76.8402063 37.31 133.43 0.034759
2005-May-19 00:00 *m 213.30439 39.29021 0.0236621694 103.573661 33.94 121.40 0.032566
2005-May-20 00:00 *m 221.99601 40.90170 0.0211650173 139.592562 29.26 104.66 0.029998
2005-May-21 00:00 *m 233.27372 41.93219 0.0190409982 185.591859 22.82 81.62 0.026865
2005-May-22 00:00 * 247.17881 41.64824 0.0174292209 237.906183 14.32 51.21 0.022981
2005-May-23 00:00 * 262.65199 39.27572 0.0164821779 285.248166 4.38 15.66 0.018344
2005-May-24 00:00 * 277.64928 34.65833 0.0163165993 311.621523 8.34 29.81 0.013369
2005-May-25 00:00 * 290.45520 28.60735 0.0169548467 308.564919 18.89 67.56 0.008932
2005-May-26 00:00 * 300.55879 22.31341 0.0183114738 282.490599 27.71 99.12 0.006106
2005-May-27 00:00 * 308.28562 16.60115 0.0202401523 246.632387 34.35 122.87 0.005495
2005-May-28 00:00 * 314.18689 11.77412 0.0225919139 210.930507 39.11 139.87 0.006212
2005-May-29 00:00 * 318.75082 7.81894 0.0252455403 179.806748 42.45 151.84 0.007167
2005-May-30 00:00 * 322.34230 4.60419 0.0281122624 154.202516 44.82 160.29 0.008021
2005-May-31 00:00 * 325.21963 1.98188 0.0311298052 133.606637 46.51 166.35 0.008767
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons (2005 May 4, solution 13, 124 observations spanning 54 days):
2005-May-15 00:00 *m 194.55182 32.96354 0.0356514742 20.5008354 33.88 121.18 0.028182
2005-May-16 00:00 *m 197.67597 34.33085 0.0324646852 27.1930458 32.86 117.54 0.026882
2005-May-17 00:00 *m 201.62151 35.86210 0.0293768147 36.3823570 31.49 112.63 0.025540
2005-May-18 00:00 *m 206.69095 37.54101 0.0264247684 49.0834194 29.61 105.91 0.024122
2005-May-19 00:00 *m 213.30474 39.29023 0.0236618382 66.6046801 27.01 96.59 0.022569
2005-May-20 00:00 *m 221.99647 40.90170 0.0211647218 90.3115303 23.38 83.61 0.020792
2005-May-21 00:00 *m 233.27430 41.93214 0.0190407409 120.728968 18.38 65.73 0.018672
2005-May-22 00:00 * 247.17949 41.64811 0.0174290043 155.525588 11.77 42.08 0.016093
2005-May-23 00:00 * 262.65268 39.27548 0.0164820030 187.308326 3.98 14.22 0.013064
2005-May-24 00:00 * 277.64989 34.65799 0.0163164633 205.453912 6.00 21.46 0.009880
2005-May-25 00:00 * 290.45568 28.60698 0.0169547412 204.182567 14.22 50.85 0.007151
2005-May-26 00:00 * 300.55916 22.31305 0.0183113869 187.546423 21.14 75.61 0.005540
2005-May-27 00:00 * 308.28590 16.60084 0.0202400721 164.228200 26.36 94.30 0.005228
2005-May-28 00:00 * 314.18709 11.77386 0.0225918303 140.831807 30.11 107.69 0.005691
2005-May-29 00:00 * 318.75097 7.81872 0.0252454458 120.340398 32.75 117.12 0.006395
2005-May-30 00:00 * 322.34242 4.60400 0.0281121516 103.426087 34.61 123.78 0.007133
2005-May-31 00:00 * 325.21973 1.98172 0.0311296743 89.7836057 35.94 128.54 0.007874
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons (2005 May 7, solution 15, 132 observations spanning 57 days):
2005-May-15 00:00 *m 194.55359 32.96488 0.0356433969 12.4649275 27.61 98.75 0.019520
2005-May-16 00:00 *m 197.67846 34.33252 0.0324568929 16.6397873 26.80 95.87 0.018521
2005-May-17 00:00 *m 201.62506 35.86413 0.0293693308 22.3972322 25.72 91.98 0.017508
2005-May-18 00:00 *m 206.69607 37.54345 0.0264176308 30.3872494 24.23 86.65 0.016463
2005-May-19 00:00 *m 213.31221 39.29301 0.0236551072 41.4529923 22.16 79.25 0.015353
2005-May-20 00:00 *m 222.00731 40.90452 0.0211584927 56.4850636 19.27 68.93 0.014127
2005-May-21 00:00 *m 233.28956 41.93426 0.0190351561 75.8556684 15.29 54.68 0.012715
2005-May-22 00:00 * 247.19935 41.64825 0.0174242544 98.1322725 10.01 35.79 0.011055
2005-May-23 00:00 * 262.67538 39.27238 0.0164782900 118.645232 3.70 13.23 0.009168
2005-May-24 00:00 * 277.67232 34.65157 0.0163139139 130.602810 4.28 15.29 0.007267
2005-May-25 00:00 * 290.47557 28.59856 0.0169533254 130.222543 10.86 38.84 0.005762
2005-May-26 00:00 * 300.57586 22.30426 0.0183109261 119.980889 16.45 58.84 0.005020
2005-May-27 00:00 * 308.29972 16.59270 0.0202403232 105.366830 20.68 73.98 0.005029
2005-May-28 00:00 * 314.19861 11.76676 0.0225925626 90.6001161 23.72 84.86 0.005473
2005-May-29 00:00 * 318.76070 7.81268 0.0252464731 77.6121044 25.87 92.52 0.006095
2005-May-30 00:00 * 322.35078 4.59890 0.0281133342 66.8584622 27.38 97.94 0.006784
2005-May-31 00:00 * 325.22703 1.97740 0.0311309100 58.1636215 28.46 101.80 0.007511
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons (2005 May 9, solution 17, 159 observations spanning 59 days):
2005-May-15 00:00 *m 194.55454 32.96558 0.0356393075 5.18301045 21.86 78.20 0.012070
2005-May-16 00:00 *m 197.67978 34.33338 0.0324529463 7.08895993 21.24 75.98 0.011313
2005-May-17 00:00 *m 201.62692 35.86518 0.0293655395 9.75440761 20.41 72.99 0.010566
2005-May-18 00:00 *m 206.69875 37.54470 0.0264140147 13.5009813 19.26 68.88 0.009827
2005-May-19 00:00 *m 213.31610 39.29443 0.0236516980 18.7532036 17.67 63.18 0.009087
2005-May-20 00:00 *m 222.01294 40.90596 0.0211553400 25.9752846 15.44 55.22 0.008329
2005-May-21 00:00 *m 233.29747 41.93533 0.0190323340 35.4046294 12.36 44.20 0.007531
2005-May-22 00:00 * 247.20961 41.64830 0.0174218615 46.4232325 8.25 29.52 0.006677
2005-May-23 00:00 * 262.68706 39.27076 0.0164764307 56.8188282 3.27 11.69 0.005796
2005-May-24 00:00 * 277.68383 34.64825 0.0163126534 63.2466574 2.79 9.97 0.005005
2005-May-25 00:00 * 290.48575 28.59423 0.0169526483 63.7080712 7.95 28.44 0.004491
2005-May-26 00:00 * 300.58440 22.29974 0.0183107405 59.2477284 12.35 44.17 0.004367
2005-May-27 00:00 * 308.30678 16.58852 0.0202405046 52.4782378 15.69 56.11 0.004582
2005-May-28 00:00 * 314.20447 11.76313 0.0225929930 45.4790346 18.09 64.70 0.005013
2005-May-29 00:00 * 318.76565 7.80959 0.0252470573 39.2403579 19.78 70.76 0.005563
2005-May-30 00:00 * 322.35503 4.59629 0.0281140010 34.0263312 20.98 75.04 0.006183
2005-May-31 00:00 * 325.23074 1.97519 0.0311316072 29.7795985 21.83 78.08 0.006847
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Horizons (2005 May 12, solution 20, 227 observations spanning 62 days):
2005-May-15 00:00 *m 194.55444 32.96554 0.0356398791 1.91768281 18.59 66.49 0.008587
2005-May-16 00:00 *m 197.67965 34.33332 0.0324534871 2.73596564 18.07 64.64 0.007940
2005-May-17 00:00 *m 201.62674 35.86512 0.0293660489 3.91196644 17.37 62.14 0.007312
2005-May-18 00:00 *m 206.69849 37.54462 0.0264144916 5.60278175 16.41 58.71 0.006706
2005-May-19 00:00 *m 213.31573 39.29435 0.0236521408 8.02140712 15.08 53.94 0.006125
2005-May-20 00:00 *m 222.01242 40.90588 0.0211557455 11.4119883 13.22 47.27 0.005572
2005-May-21 00:00 *m 233.29674 41.93529 0.0190326977 15.9287163 10.63 38.02 0.005048
2005-May-22 00:00 * 247.20868 41.64836 0.0174221773 21.3331874 7.18 25.67 0.004561
2005-May-23 00:00 * 262.68603 39.27098 0.0164766928 26.6104633 2.94 10.50 0.004138
2005-May-24 00:00 * 277.68283 34.64863 0.0163128602 30.1308682 2.03 7.27 0.003837
2005-May-25 00:00 * 290.48487 28.59469 0.0169528057 30.8224094 6.43 23.01 0.003730
2005-May-26 00:00 * 300.58367 22.30021 0.0183108608 29.0680554 10.17 36.36 0.003844
2005-May-27 00:00 * 308.30618 16.58896 0.0202406022 26.0761730 13.00 46.50 0.004143
2005-May-28 00:00 * 314.20398 11.76351 0.0225930811 22.8615826 15.04 53.81 0.004570
2005-May-29 00:00 * 318.76524 7.80992 0.0252471463 19.9352225 16.49 58.97 0.005081
2005-May-30 00:00 * 322.35467 4.59657 0.0281140985 17.4543683 17.50 62.61 0.005646
2005-May-31 00:00 * 325.23043 1.97544 0.0311317190 15.4118876 18.23 65.20 0.006250
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini (2005 May 16)
With 268 optical observations (2005-Mar-10 to 2005-May-15), 1 delay
and 1 Doppler (Arecibo, 2005), 2005 ED318 solution #26 was computed.
Formal 3-sigma X-band uncertainties are as shown below.
Date__(UT)__HR:MN POS_3sigma DOP_X-sig RT_delay-sig
----------------- ---------- --------- ------------
2005-May-20 00:00 1.79246544 1.65 0.000137
2005-May-21 00:00 2.27545199 1.46 0.000140
2005-May-22 00:00 2.83689598 1.22 0.000136
2005-May-23 00:00 3.37688293 0.97 0.000130
2005-May-24 00:00 3.73694667 0.81 0.000130
2005-May-25 00:00 3.81374201 0.86 0.000148
2005-May-26 00:00 3.64584738 1.04 0.000180
2005-May-27 00:00 3.35226288 1.24 0.000217
2005-May-28 00:00 3.03318015 1.40 0.000253
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini (2005 May 25)
With 329 optical observations (2005-Mar-10 to 2005-May-24),
5 delay and 3 Doppler, solution #36 was computed. Formal 3-sigma
uncertainties are below:
Date__(UT)__HR:MN POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
----------------- ---------- --------- --------- ------------
2005-May-25 00:00 .640465490 <0.50 <0.50 0.000002
2005-May-26 00:00 .634612590 <0.50 <0.50 0.000006
2005-May-27 00:00 .613319430 <0.50 <0.50 0.000009
2005-May-28 00:00 .586128975 <0.50 <0.50 0.000012
2005-May-29 00:00 .558775336 <0.50 <0.50 0.000014
2005-May-30 00:00 .533810508 <0.50 <0.50 0.000017
2005-May-31 00:00 .512009356 <0.50 <0.50 0.000019
2005-Jun-01 00:00 .493343221 <0.50 <0.50 0.000021
2005-Jun-02 00:00 .477484929 <0.50 <0.50 0.000024
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
From Jon Giorgini (2005 May 27)
With 358 optical observations (2005-Mar-10 to 2005-May-26), 2 Doppler
and 5 delay (incl. Lance's latest measurement just-received), 2005 ED318
solution #38 was computed. 3-sigma uncertainties are below.
Files have been updated on stealth, including two new files:
/export/data2/osod/ops/2005ed318/user_files/
PRDX.OUT.01-14.sband.s38
PUNCH.OUT.01-14.sband.s38
... for the case of DSS-14 constant frequency (2380 MHz) receive of
Arecibo Doppler uplinked S-band. I believe this is the PUNCH file
Randy asked for in his earlier e-mail.
The file set on Arecibo/utuado will be updated to solution #38 after
this e-mail is sent.
The pointing/delay/Doppler 3-sigma uncertainties:
Date__(UT)__HR:MN POS_3sigma DOP_S-sig DOP_X-sig RT_delay-sig
(arcsec) (Hz) (Hz) (sec)
----------------- ---------- --------- --------- ------------
2005-May-28 00:00 .474792832 <0.50 <0.50 0.000001
2005-May-29 00:00 .456528918 <0.50 <0.50 0.000001
2005-May-30 00:00 .439667591 <0.50 <0.50 0.000002
2005-May-31 00:00 .424820215 <0.50 <0.50 0.000002
2005-Jun-01 00:00 .412033921 <0.50 <0.50 0.000003
2005-Jun-02 00:00 .401130095 <0.50 <0.50 0.000004
These are very low formal delay uncertainties; rare if not unique
to see them so small.
CLOSE APPROACHES:
JPL Solution 17
NOTE: pre-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit.
Date (CT) Body CA Dist MinDist MaxDist Vrel TCA3Sg Nsigs P_i/p
---------------------- ----- ------- ------- ------- ------ ------ ------ -------
A.D. 1947 Jul 01.45133 Earth .088198 .007696 .154869 9.119 14404. 1795.7 .000000
A.D. 1975 May 25.57948 Mars .076222 .026746 .128416 9.925 4906.5 9448.2 .000000
A.D. 2005 May 23.70980 Earth .016267 .016262 .016272 6.346 1.87 5945.2 .000000
A.D. 2010 Jun 28.50984 Earth .069839 .060457 .078961 8.387 2345.0 597.22 .000000
A.D. 2032 Sep 18.08668 Mars .064321 .047558 .081049 12.192 1604.9 7298.6 .000000
A.D. 2040 Apr 06.50903 Mars .065737 .048125 .083597 10.288 1949.1 7464.6 .000000
A.D. 2077 Apr 25.99298 Ceres .064967 .062222 .068006 5.207 2965.3 74288. .000000
A.D. 2078 Apr 29.44868 Earth .081197 .065860 .096107 8.642 3552.9 54834. .000000
A.D. 2083 Jun 02.14860 Earth .008833 .007659 .010114 6.376 3048.2 8360.3 .000000
A.D. 2088 Jun 17.44118 Earth .023765 .017733 .029667 6.886 3722.6 3910.9 .000000
A.D. 2104 Dec 04.36816 Ceres .056219 .055112 .059142 5.121 6742.5 1.13E5 .000000
A.D. 2154 Feb 06.94738 Mars .014890 .012415 .139333 11.380 11312. 10085. .000000
A.D. 2161 May 25.57823 Earth .015277 .005099 .071757 6.416 87894. 51440. .000000
NOTE: post-epoch CA list was truncated due to Earth TCA3Sg exceeding the set limit.
Setups
CW Setup
TX polarization RCP
RCV polarization LCP
Frequencies: 2
Dwell: 10 seconds (!) NOTE THE SHORT DWELL!
Bandwidth: 4000 Hz
Sampling interval: 2500 x 0.1 usec
VME FFT for PSD files: 16384 for 0.244-Hz resolution
Possible ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec single sample
baud 10 usec
code 127
gates 127
FFT 64
CLT 11
ncoh 2
bandwidth 394 Hz
resolution 6.15 Hz
TXOFF +60 Hz -> echo will be centered at +9.75 bins or in bin 32+10 = 42
incoh sums 64 => 10.4 sec/record
---------------------------------------------------------------------------
127 x 64 11-usec single sample, 5.6-Hz resolution.
baud 11 usec
code 127
gates 127
PRP 1397
FFT 64
CLT 11
ncoh 2
bandwidth 357.9 Hz
resolution 5.59 Hz
TXOFF TBD
-------------------------------------------------------------------------
127 x 64 11-usec single sample, 11.2-Hz resolution
baud 11 usec
code 127
gates 127
PRP 1397
FFT 64
CLT 11
ncoh 1
bandwidth 715.8 Hz
resolution 11.2 Hz
TXOFF +60 -> echo would be centered at +5 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 7-usec single sample
------------------------------
baud 7 usec
code 127
gates 127
PRP 889
FFT 64
CLT 11
ncoh 1
bandwidth 1124.9 Hz
resolution 17.6 Hz
TXOFF +60 -> echo would be centered at +3.4 bins w/perfect ephemeris
-------------------------------------------------------------------------
127 x 64 1-usec single sample
------------------------------
baud 1 usec
code 127
gates 127
PRP 127
FFT 64
CLT 13 & 14, about evenly divided
ncoh 15
bandwidth 525 Hz
resolution 8.2 Hz
TXOFF +50 -> echo would be centered at +6.1 bins w/perfect ephemeris
-------------------------------------------------------------------------------
0.125-usec ranging
------------------
setup JX1XS001
baud 0.125 usec
code 127
gates 127
FFT 64
ncoh 1968
bandwidth 32.008 Hz
resolution 0.5001 Hz
TXOFF 6 Hz = 12 cells, => cell 44
incoh sums 4 looks=> 8 sec/record => expect records per run ~ RTT/8
CLT gate 34.8
_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n)
These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
Currently configured for 5-sec records.
_______________________________________________________________________
Setup Baud RP 1-acc 1-acc
usec m usec band res acc band res
_______________________________________________________________________
JX1XS110 11.000 1650 1397.0 715.8 11.2 2 358 5.6
JX1XS070 7.000 1050 889.0 1124.9 17.6 3 375 5.9
JX1XS020 2.000 300 254.0 3937.0 61.5 12 328 5.1
4 984 15.4
JX1XS010 1.000 150 127.0 7874.0 123.0 41 192 3.0
8 984 15.4
JX1XS005 0.500 75 63.5 15748.0 246.1 123 128 2.0
15 1050 16.4
JX1XS002 0.250 37.5 31.75 31496.1 492.1 492 64 1.0
30 1050 16.4
JX1XS001 0.125 18.75 15.875 62992.1 984.3 1970 32 0.5
60 1050 16.4
____________________________________________________________________
Instructions
NOTE: Data should be moved to the appropriate subdirectories in
stealth:/export/data0/rosema/2005ED318/raw/
2005 EU2 POINTING:
Soln #38 predicts have been established on stealth in
/export/data2/osod/ops/2005ed318/
PRDX.OUT.01-14.sband.s38
PUNCH.OUT.01-14.sband.s38
EPH.OUT.s38
Files for Arecibo->DSS14 with uplink Dopplers at Arecibo,
DSS-14 constant receive at 2380 MHz.
Files have been copied to:
/export/data0/rosema/2005ED318/support/
POINTING MACROS
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2005 05 27 147 100000 311.0104 14.5117 A 21.1 30
2005 05 27 147 110000 311.2369 14.3100 A 21.2
2005 05 27 147 120000 311.4589 14.1085 A -0.0013 -0.0012 21.3
2005 05 27 147 130000 311.6781 13.9070 A 21.4
2005 05 27 147 140000 311.8961 13.7057 A 21.5
PRDX.OUT.01-14.s38
TRANSMITTER: STATION # 1, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL D-DOP D-RANGE
2005 MAY 30 07:30 28.9333371621 -77681.190 280.1197 3.7265 323.402 10.402 0.000 0.0000000023
2005 MAY 30 07:40 28.9529429239 -77864.380 282.6065 3.7078 323.422 12.413 0.000 0.0000000014
2005 MAY 30 07:50 28.9725959390 -78056.022 285.0934 3.6891 323.442 14.421 0.000 0.0000000010
2005 MAY 30 08:00 28.9922982992 -78255.804 287.5805 3.6705 323.461 16.423 0.000 0.0000000042
2005 MAY 30 08:10 29.0120520071 -78463.398 290.0677 3.6519 323.481 18.419 0.000 0.0000000009
2005 MAY 30 08:20 29.0318589983 -78678.462 292.5551 3.6333 323.500 20.406 0.000 0.0000000004
2005 MAY 30 08:30 29.0517211114 -78900.640 295.0426 3.6147 323.520 22.382 0.000 0.0000000041
2005 MAY 30 08:40 29.0716400848 -79129.561 297.5302 3.5961 323.539 24.347 0.000 0.0000000022
2005 MAY 30 08:50 29.0916175704 -79364.841 300.0180 3.5776 323.558 26.297 0.000 -0.0000000038
2005 MAY 30 09:00 29.1116551395 -79606.085 302.5060 3.5591 323.577 28.232 0.000 0.0000000028
2005 MAY 30 09:10 29.1317542185 -79852.886 304.9941 3.5406 323.596 30.147 0.000 -0.0000000030
2005 MAY 30 09:20 29.1519161822 -80104.826 307.4823 3.5221 323.614 32.041 0.000 0.0000000041
2005 MAY 30 09:30 29.1721422462 -80361.477 309.9706 3.5036 323.633 33.911 0.000 -0.0000000007
2005 MAY 30 09:40 29.1924335611 -80622.403 312.4591 3.4852 323.651 35.754 0.000 -0.0000000009
2005 MAY 30 09:50 29.2127911397 -80887.157 314.9477 3.4668 323.669 37.566 0.000 -0.0000000025
2005 MAY 30 10:00 29.2332158995 -81155.288 317.4364 3.4484 323.688 39.342
GOLDSTONE MASTERLOG
==============================================================================
setup RCV
file code ncoh runs start -stop osod OFFSET TX Poln
------------------------------------------------------------------------------
May 20 (DOY 140)
CW 2 hops, 4 kHz, 10s dwell 17 010830-012034 26 none RCP VME & PFS
10 us, 127 8 12 023624-024447 26 +30 Hz RCP VME & PFS 128 FFT
10 us, 127 8 13 024606-025514 26 +30 Hz RCP VME & PFS 64 FFT
1 us, 127 100 12 031544-032406 26 +10 Hz RCP VME & PFS
1/8 us 127 1838 32 043647-045951 26 +3 Hz RCP VME & PFS runs 1- ~18 BAD
1/8 us 127 1838 211 051043-074509 28 +3 Hz RCP VME & PFS
------------------------------------------------------------------------------
May 23 (DOY 143)
1/8 us 255 1225 449 094539-142959 30 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
May 24 (DOY 144)
10 us, 127 8 4 045742-045937 30 +15.4 Hz RCP VME & PFS
1 us, 127 20 4 051342-051538 30 +12.3 Hz RCP VME & PFS
1/8 us 255 1225 40 054203-060419 30 +4 Hz RCP VME & PFS vme display problems
1/8 us 255 1225 48 061414-064105 30 +4 Hz RCP VME & PFS vme display problems
1/8 us 255 1225 71 064457-072449 32 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
May 25 (DOY 145)
1/8 us 255 1470 186 073238-092446 34 +4 Hz RCP VME & PFS
------------------------------------------------------------------------------
May 27 (DOY 147)
1/8 us 255 1960 12 100645-101508 36 +4 Hz RCP VME & PFS
1/8 us 255 3676 -- ~1035xx-133513 36 +2 Hz RCP VME & PFS DSS14->DSS13; RX LCP ONLY
==============================================================================
RADAR ASTROMETRY
2005 05 20 01:10:00 P 244802.909D0 0.25 8560.D6 -14 -14 Benner, L.A.M.
Correction of -1 Hz from 17 CW runs with 0.25 Hz resolution. Bandwidth
is about 0.8 Hz.
2005 05 20 03:20:00 R 20.772345 2.0 8560.D6 -14 Benner, L.A.M.
Correction of +34 usec to solution 26 from 10 usec and 1 usec ranging.
2005 05 24 05:10:00 R 16.319966 1.0 8560.D6 -14 Benner, L.A.M.
Correction of +11 usec to solution 30 from 10 usec and 1 usec ranging.
2005 05 24 07:00:00 R 16.341726650 0.25 8560.D6 -14 Benner, L.A.M.
Correction of +3/8 usec to soln 32 from a sum of 71 1/8 usec images.
Placed COM at TE. Echo is 6 gates deep.
2005 05 27 10:10:00 R 21.08982214 0.25 8560.D6 -14 Benner, L.A.M.
Correction of +1.75 usec to soln 36 from a sum of 12 1/8 usec images.
Placed COM at TE of echo, which is five gates deep.
==============================================================================
Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 300-233 | FAX: (818) 354-9476
Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov
Pasadena, CA 91109-8099 | Plan: To live long and prosper
Asteroid Radar Astronomy