2011 YH40 Goldstone Radar Observations Planning
Range resolution = 15 meters
2011 YH40 was discovered by the Catalina Sky Survey on December 29, 2011. This asteroid has diameter ~0.11 km (within a factor of two) and it is making a close approach to Earth (0.0138 AU, or ~5.4 lunar distances) on January 16, 2012. We have two tracks scheduled at Goldstone just prior to the closest approach. 2011 YH40 will be a moderately strong radar target at Goldstone and we hope to obtain some 1/8 usec images and 5 and 10 MHz chirping. It is likely that the object will have a bandwidth of ~5 Hz. 2011 YH40 is an excellent optical target until the second part of January, when it moves too close to the Sun.
Orbital and Physical Characteristics orbit type Apollo semimajor axis 1.398 AU eccentricity 0.328 inclination 11.338 deg perihelion distance 0.940 AU aphelion distance 1.856 AU absolute magnitude (H) 22.9 diameter 0.11 km (within a factor of two) rotation period ~2 h pole direction unknown lightcurve amplitude unknown spectral class unknown Last update: 2012 Feb 01
M.P.E.C. 2011-Y71 Issued 2011 Dec. 31, 17:21 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.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://www.minorplanetcenter.net/ ISSN 1523-6714
2011 YH40
Observations:
K11Y40H* C2011 12 29.41700 07 07 54.76 +61 26 37.8 19.2 VrEY071703
K11Y40H C2011 12 29.42150 07 07 55.09 +61 26 32.9 18.8 VrEY071703
K11Y40H C2011 12 29.42604 07 07 55.52 +61 26 29.3 19.0 VrEY071703
K11Y40H C2011 12 29.43054 07 07 55.74 +61 26 24.1 18.9 VrEY071703
K11Y40H HC2011 12 29.45839 07 07 57.89 +61 25 56.4 oEY071291
K11Y40H HC2011 12 29.46201 07 07 58.16 +61 25 52.5 oEY071291
K11Y40H HC2011 12 29.46561 07 07 58.44 +61 25 48.6 oEY071291
K11Y40H C2011 12 29.46769 07 07 58.48 +61 25 46.1 18.9 VrEY071703
K11Y40H C2011 12 29.46902 07 07 58.62 +61 25 44.4 19.1 VrEY071703
K11Y40H C2011 12 29.47037 07 07 58.80 +61 25 43.1 18.9 VrEY071703
K11Y40H C2011 12 29.47176 07 07 58.80 +61 25 40.0 19.3 VrEY071703
K11Y40H KC2011 12 29.83727 07 09 00.63 +61 20 19.3 tEY071204
K11Y40H KC2011 12 29.84863 07 09 01.77 +61 20 13.0 tEY071204
K11Y40H KC2011 12 29.86026 07 09 02.89 +61 20 06.2 18.6 RtEY071204
K11Y40H KC2011 12 29.98844 07 09 14.68 +61 18 25.4 uEY071J95
K11Y40H KC2011 12 29.99069 07 09 14.89 +61 18 23.5 uEY071J95
K11Y40H KC2011 12 29.99291 07 09 15.05 +61 18 21.9 18.6 RuEY071J95
K11Y40H C2011 12 30.16994 07 09 45.52 +61 15 42.9 18.8 VoEY071G48
K11Y40H C2011 12 30.17250 07 09 45.81 +61 15 41.6 18.7 VoEY071G48
K11Y40H C2011 12 30.17502 07 09 45.96 +61 15 39.7 19.2 VoEY071G48
K11Y40H KC2011 12 31.05189 07 11 33.47 +61 01 04.9 18.7 VuEY071595
K11Y40H KC2011 12 31.05871 07 11 34.15 +61 00 56.2 19.0 VuEY071595
K11Y40H C2011 12 31.42793 07 12 25.16 +60 54 10.1 18.6 VrEY071703
K11Y40H C2011 12 31.43115 07 12 25.23 +60 54 05.9 18.6 VrEY071703
K11Y40H C2011 12 31.43436 07 12 25.59 +60 54 01.1 18.9 VrEY071703
K11Y40H C2011 12 31.43757 07 12 25.84 +60 53 56.1 18.7 VrEY071703
K11Y40H C2011 12 31.53722 07 12 54.86 +60 51 52.3 18.2 VuEY071900
K11Y40H C2011 12 31.54257 07 12 55.30 +60 51 47.4 18.6 VuEY071900
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. 0.38-m f/6.8 reflector
+ CCD.
291 LPL/Spacewatch II. Observer R. S. McMillan. 1.8-m f/2.7 reflector + CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.40-m f/4.5 reflector + CCD.
703 Catalina Sky Survey. Observers A. Boattini, R. E. Hill. Measurers
J. D. Ahern, E. C. Beshore, A. Boattini, G. J. Garradd, A. R. Gibbs,
P. Tricarico, A. D. Grauer, R. E. Hill, R. A. Kowalski, S. M. Larson,
R. H. McNaught. 0.68-m Schmidt + CCD.
900 Moriyama. Observer Y. Ikari. 0.26-m f/7.0 reflector + CCD.
G48 Doc Greiner Research Obs., Rancho Hildalgo. Observer M. Mills. 0.4-m
f/10 Schmidt-Cassegrain + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.40-m f/6.0 Schmidt-Cassegrain
+ CCD.
Orbital elements:
2011 YH40 Earth MOID = 0.0124 AU
Epoch 2012 Mar. 14.0 TT = JDT 2456000.5 MPC
M 14.84328 (2000.0) P Q
n 0.59649834 Peri. 220.79218 -0.89539502 -0.40770310
a 1.3976440 Node 294.30098 +0.44224107 -0.76743103
e 0.3276311 Incl. 11.32752 +0.05187100 -0.49480077
P 1.65 H 22.4 G 0.15 U 7
Residuals in seconds of arc
111229 703 0.3- 0.1+ 111229 703 0.4- 0.7- 111231 595 0.6- 0.0
111229 703 0.1- 0.4- 111229 204 0.1- 0.0 111231 595 0.0 0.1-
111229 703 0.7+ 0.5+ 111229 204 0.0 0.0 111231 703 1.0+ 0.1-
111229 703 0.0 0.1- 111229 204 0.1+ 0.1- 111231 703 0.6- 0.4+
111229 291 0.1+ 0.0 111229 J95 0.1- 0.1- 111231 703 0.0 0.3+
111229 291 0.1+ 0.0 111229 J95 0.1+ 0.2- 111231 703 0.3- 0.0
111229 291 0.0 0.1- 111229 J95 0.1- 0.0 111231 900 0.5+ 0.0
111229 703 0.4- 0.9+ 111230 G48 0.1- 0.1+ 111231 900 0.1+ 0.0
111229 703 0.1- 0.7+ 111230 G48 0.2+ 0.2+
111229 703 0.4+ 0.9+ 111230 G48 0.4- 0.3-
Ephemeris:
2011 YH40 a,e,i = 1.40, 0.33, 11 q = 0.9397
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2011 12 01 06 28 37.6 +59 00 51 0.2701 1.1973 136.7 34.4 21.4
...
2011 12 16 06 47 51.2 +61 37 46 0.1759 1.1238 139.5 34.7 20.3
...
2011 12 24 06 58 34.0 +62 02 01 0.1297 1.0867 140.4 35.2 19.6
...
2011 12 30 07 09 14.0 +61 18 02 0.09642 1.0605 141.4 35.3 18.9
2011 12 31 07 11 29.7 +61 01 42 0.09098 1.0562 141.7 35.3 18.8
2012 01 01 07 13 57.6 +60 41 40 0.08557 1.0521 142.0 35.1 18.6
...
2012 01 07 07 35 18.8 +56 28 28 0.05375 1.0281 145.7 32.6 17.5
...
2012 01 15 08 48 55.6 +18 05 07 0.01666 0.9996 164.3 15.4 14.4
...
2012 01 30 16 20 11.2 -75 04 31 0.07052 0.9594 66.8 109.3 20.7
A. U. Tomatic (C) Copyright 2011 MPC M.P.E.C. 2011-Y71
Target Name: 2011 YH40
D = 0.11 km
Period = 2.0 hr
OC albedo = 0.100
# max
start date window RA, dec dist runs SNR SNR/run
-----------------------------------------------------------------------
2012 Jan 10 01:39-15:11 119, +50 0.037 691 50 2
2012 Jan 11 01:55-15:03 121, +47 0.032 764 85 3
2012 Jan 12 02:15-14:53 124, +42 0.027 851 160 6
2012 Jan 13 02:40-14:40 127, +36 0.023 949 300 11
2012 Jan 14 03:14-14:22 130, +26 0.019 1047 610 21
2012 Jan 15 04:01-13:55 134, +12 0.016 1096 1200 38
2012 Jan 16 05:14-13:08 139, -8 0.014 991 1500 54
2012 Jan 17 07:29-11:27 145, -29 0.014 611 900 39
After Jan. 17 2011 YH40 moves too far south for Goldstone to track.
Goldstone SNRs assume Ptx = 450 kW
Goldstone tracks:
UT UT PST Duration Round-trip
DOY Date TX Window TX Window hh:mm time (sec) SNR/Run
--- ---- --------- --------- --------- --------- -------
013 Jan 13 0240-0445 1840-2040 Jan 12 02:05 24 11
015 Jan 15 0405-0605 2005-2205 Jan 14 02:00 16 38
TXON is given at the earliest time we can transmit.
Precal times start 90 minutes earlier.
From Jon Giorgini, 2012 Jan 15, Solution 16, 270 optical measurements, 2011-Dec-29 to 2012-Jan-13.9 Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Jan-13 00:00 1.113 1459.41 0.080195 2012-Jan-13 12:00 1.623 1383.35 0.073088 2012-Jan-14 00:00 1.233 1282.86 0.066419 2012-Jan-14 12:00 2.683 1149.79 0.060329 2012-Jan-15 00:00 2.610 973.55 0.055008 2012-Jan-15 12:00 4.827 745.69 0.050692 2012-Jan-16 00:00 5.513 463.10 0.047653 From Jon Giorgini, 2012 Jan 13, Solution 14, 251 optical measurements (2011-dec-29 to 2012-jan-12) Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Jan-13 00:00 1.988 1648.26 0.090124 2012-Jan-13 12:00 3.612 1561.86 0.082099 2012-Jan-14 00:00 4.028 1447.49 0.074572 2012-Jan-14 12:00 6.908 1295.90 0.067704 2012-Jan-15 00:00 8.565 1094.81 0.061713 2012-Jan-15 12:00 12.775 834.93 0.056868 2012-Jan-16 00:00 15.713 512.79 0.053480 From Jon Giorgini, 2012 Jan 11, Solution 12, 242 optical measurements (2011-dec-29 to 2012-Jan-10) Date__(UT)__HR:MN POS_3sigma DOP_X_3sig RT_delay_3sig 2012-Jan-13 00:00 6.171 1899.73 0.102564 2012-Jan-13 12:00 9.946 1798.16 0.093321 2012-Jan-14 00:00 12.753 1663.39 0.084667 2012-Jan-14 12:00 19.150 1484.08 0.076787 2012-Jan-15 00:00 25.051 1245.82 0.069947 2012-Jan-15 12:00 34.600 938.30 0.064461 2012-Jan-16 00:00 43.030 559.25 0.060703 From JPL/Horizons, 2012 Jan 10, Solution 9, #obs = 232, 2011-2012. Date__(UT)__HR:MN R.A._(J2000.0)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Jan-10 00:00 * 118.41235 51.04727 0.03834533365876 1.721 630.64 2292.05 0.172187 2012-Jan-11 00:00 * 120.39211 48.05745 0.03341885612061 2.749 614.13 2232.03 0.149582 2012-Jan-12 00:00 * 122.69629 43.98715 0.02864930356849 5.119 589.17 2141.32 0.127717 2012-Jan-13 00:00 * 125.40035 38.26086 0.02412325493388 9.994 548.89 1994.90 0.107010 2012-Jan-14 00:00 * 128.60131 29.94009 0.01999930669719 19.520 479.68 1743.38 0.088236 2012-Jan-15 00:00 * 132.42327 17.65956 0.01657203946656 36.786 357.16 1298.08 0.072844 2012-Jan-16 00:00 * 137.02242 0.30418 0.01434066323258 61.433 156.83 570.00 0.063288 2012-Jan-17 00:00 * 142.58713 -20.53488 0.01388474969470 79.495 112.87 410.22 0.062294 2012-Jan-18 00:00 * 149.32330 -39.71105 0.01535472633112 76.776 325.01 1181.24 0.070241 2012-Jan-19 00:00 * 157.40580 -53.73277 0.01828462838154 62.559 458.73 1667.22 0.084620 - - - - - - - - - - - - - - - - - - - - From JPL Horizons, Jan 06 2012, Solution #6, #obs 144 (2011-2012) Date__(UT)__HR:MN POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig 2012-Jan-10 00:00 * 18.474 841.91 3059.87 0.219133 2012-Jan-11 00:00 * 32.543 818.74 2975.68 0.189483 2012-Jan-12 00:00 * 57.148 782.79 2845.01 0.161007 2012-Jan-13 00:00 * 101.151 723.15 2628.24 0.134320 2012-Jan-14 00:00 * 180.592 619.31 2250.84 0.110455 2012-Jan-15 00:00 * 316.885 447.65 1626.96 0.091116 2012-Jan-16 00:00 * 502.117 309.81 1126.00 0.079264 2012-Jan-17 00:00 * 627.335 476.95 1733.46 0.079789 2012-Jan-18 00:00 * 593.910 644.72 2343.22 0.094496 2012-Jan-19 00:00 * 479.995 729.66 2651.90 0.117848 2012-Jan-20 00:00 * 373.449 778.17 2828.23 0.144872 ****************************************************************************************** Apparent Magnitudes and Solar Elongations: Date__(UT)__HR:MN R.A._(J2000.0)_DEC. APmag delta S-O-T /r 2012-Jan-07 00:00 *m 114.15302 56.40697 18.03 0.05366576128516 145.7051 /L 2012-Jan-08 00:00 *m 115.45946 55.02545 17.77 0.04849431285137 146.9114 /L 2012-Jan-09 00:00 * 116.94740 53.27466 17.48 0.04338269315327 148.4401 /L 2012-Jan-10 00:00 * 118.65340 51.01315 17.16 0.03834916785974 150.4047 /L 2012-Jan-11 00:00 * 120.62354 48.02188 16.78 0.03342317853299 152.9633 /L 2012-Jan-12 00:00 * 122.91652 43.95036 16.34 0.02865405917600 156.3178 /L 2012-Jan-13 00:00 * 125.60762 38.22351 15.84 0.02412832934955 160.6011 /L 2012-Jan-14 00:00 * 128.79370 29.90360 15.28 0.02000445439478 165.0140 /L 2012-Jan-15 00:00 * 132.59895 17.62652 14.90 0.01657673774013 164.0480 /L 2012-Jan-16 00:00 * 137.18002 0.27688 14.97 0.01434395017015 151.4698 /L 2012-Jan-17 00:00 * 142.72652 -20.55952 15.43 0.01388552585405 132.1384 /L 2012-Jan-18 00:00 * 149.44669 -39.74115 16.18 0.01535269302889 113.3402 /L 2012-Jan-19 00:00 * 157.51926 -53.77243 17.01 0.01828031599841 99.1415 /L 2012-Jan-20 00:00 * 166.99248 -62.92838 17.78 0.02208907440863 89.4387 /L 2012-Jan-21 00:00 * 177.64419 -68.64657 18.43 0.02639515572738 82.8668 /L 2012-Jan-22 00:00 * 188.90190 -72.10692 18.98 0.03098760438683 78.3109 /L 2012-Jan-23 00:00 *m 199.96711 -74.10447 19.43 0.03575250735423 75.0610 /L 2012-Jan-24 00:00 *m 210.12079 -75.17005 19.81 0.04062593685202 72.6837 /L 2012-Jan-25 00:00 *m 218.96138 -75.65843 20.14 0.04557011297821 70.9101 /L 2012-Jan-26 00:00 *m 226.41587 -75.80027 20.42 0.05056153511317 69.5683 /L 2012-Jan-27 00:00 *m 232.61207 -75.73974 20.67 0.05558487292895 68.5444 /L 2012-Jan-28 00:00 *m 237.75220 -75.56418 20.88 0.06062967500877 67.7608 /L 2012-Jan-29 00:00 *m 242.03982 -75.32543 21.07 0.06568851239059 67.1628 /L 2012-Jan-30 00:00 *m 245.65066 -75.05395 21.24 0.07075588644715 66.7109 /L 2012-Jan-31 00:00 *m 248.72665 -74.76743 21.38 0.07582756172558 66.3760 /L
CW setup:
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: no hops
Bandwidth: 8000 Hz
Sampling interval: 625 x 0.1 usec
VME FFT for PSD files: 4096 for 3.9-Hz resolution
Ranging setups:
---------------------------------------------------------------------------
127 x 64 10-usec single sample
baud 10 usec
code 127
gates 127
PRP 1270 usec
FFT 64
CLT VME ?
PFS ?
ncoh 1
bandwidth 787 Hz
resolution 12.3 Hz
TXOFF +150 Hz -> echo will be centered at +12 bins or in bin 32 + 12 = 44
---------------------------------------------------------------------------
127 x 64 11-usec single sample
baud 11 usec
code 127
gates 127
PRP 1397 usec
FFT 64
CLT VME ?
PFS ?
ncoh 1
bandwidth 717 Hz
resolution 11.2 Hz
TXOFF +150 Hz --> echo will be centered at +13 bins or in bin 32 + 13 =45
-------------------------------------------------------------------------
1-usec single sample
baud 1 usec
code 255
ncoh 6
bandwidth 654 Hz
FFT 128
dfreq 5.1 Hz
TXoff +80 Hz (echo in bin 64+16 =80)
-------------------------------------------------------------------------------
0.125-usec single sample
baud 0.125 usec
code 255
ncoh 122
bandwidth 257 Hz
FFT 256
dfreq 1.0 Hz
TXoff +30 Hz (echo in bin 128+30 =158)
_____________________________________________________________________
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
____________________________________________________________________
OSOD and predicts are on aardvark:
/export/data3/osod/ops/2011yh40/PRDX.OUT.14f-14-14.s16
/PUNCH.OUT.14f-14-14.s16
/EPH.OUT.s16
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
2012 01 15 015 040000 133.3449 15.1086 A 16.0
2012 01 15 015 050000 133.5129 14.4588 A -0.70 -2.90 15.9 s16
2012 01 15 015 060000 133.6747 13.7980 A 15.8
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s16
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
2012 JAN 15 03:20 16.1272061082 293935.383 273.8803 15.5360 133.229 12.028
2012 JAN 15 03:30 16.1066356114 293002.467 276.3579 15.4296 133.258 13.958
2012 JAN 15 03:40 16.0861319701 292027.815 278.8356 15.3229 133.287 15.896
2012 JAN 15 03:50 16.0656981044 291011.557 281.3136 15.2159 133.316 17.842
2012 JAN 15 04:00 16.0453369242 289953.894 283.7918 15.1086 133.345 19.793
2012 JAN 15 04:10 16.0250513225 288855.100 286.2701 15.0010 133.373 21.750
2012 JAN 15 04:20 16.0048441706 287715.524 288.7487 14.8932 133.402 23.709
2012 JAN 15 04:30 15.9847183127 286535.583 291.2274 14.7850 133.430 25.670
2012 JAN 15 04:40 15.9646765615 285315.770 293.7064 14.6766 133.458 27.632
2012 JAN 15 04:50 15.9447216925 284056.644 296.1855 14.5678 133.485 29.592
2012 JAN 15 05:00 15.9248564391 282758.838 298.6648 14.4588 133.513 31.549
2012 JAN 15 05:10 15.9050834891 281423.049 301.1443 14.3494 133.540 33.501
2012 JAN 15 05:20 15.8854054788 280050.046 303.6239 14.2397 133.568 35.446
2012 JAN 15 05:30 15.8658249863 278640.660 306.1037 14.1298 133.595 37.383
2012 JAN 15 05:40 15.8463445319 277195.789 308.5837 14.0195 133.621 39.307
2012 JAN 15 05:50 15.8269665695 275716.394 311.0638 13.9089 133.648 41.218
2012 JAN 15 06:00 15.8076934825 274203.496 313.5441 13.7980 133.675 43.111
2012 JAN 15 06:10 15.7885275832 272658.176 316.0245 13.6868 133.701 44.984
2012 JAN 15 06:20 15.7694711044 271081.572 318.5051 13.5753 133.727 46.832
2011YH40 GOLDSTONE MASTERLOG
==============================================================================
Receive TX
Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes
------------------------------------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 300-233 | FAX: (818) 354-9476
Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov
California Institute of Technology | Plan: To live long and prosper
Pasadena, CA 91109-8099
http://echo.jpl.nasa.gov/asteroids/2011YH40/2011YH40_planning.html
Asteroid Radar Astronomy