Goldstone Radar Observations Planning: 2021 NY1 and 2003 QQ47


Background


2021 NY1    
2021 NY1 was discovered by Pan-STARRS 1 on July 7.  This asteroid has an absolute
magnitude of 21.7 that suggests a diameter of roughly 160 meters.  The rotation 
period and spectral class are unknown.

2021 NY1 will approach within 0.010 au (3.9 Earth-Moon distances) on September 22.
The asteroid will be too far south at that time for radar observations at Goldstone
but we are scheduled to observe it on Sep. 18 at 0.022 au when the declination 
will be -20 deg.

We anticipate radar signal-to-noise ratios strong enough for detailed imaging.

This asteroid will pass through a solar elongation of 90 degrees around August 24
when it might be observed by NASA's NEOWISE spacecraft.  If so, then an estimate of
its diameter may become available prior to the radar observations on Sep. 18.
Update: Although 2021 NY1 passed through the spacecraft's field of view, it was not
detected, which hints that the asteroid is not significantly larger
than 160 meters or optically dark.

2021 NY1 will brighten to about 16th magnitude for a few days in late September 
when it could be a good target for photometry.

Another update: T. Lister and J. Chatelain report possible rotation periods of 0.2 or 0.4 h.
The lightcurve amplitude is 0.45 mag, which suggests a moderately elongated shape.
P. Pravec and C. Snodgrass subsequently reported a period of 0.222 h and a lightcurve
amplitude of 0.7 mag, so this object is a rapid rotator with an elongated shape.
As such, the echo bandwidths could vary considerably as the asteroid spins, and
the radar observations on Sep. 18 could cover more than three full rotations.  

All else being equal, these periods would drop the SNRs by a factor of several, but
2021 NY1 will still be detectable at Goldstone.


2003 QQ47
(143649) 2003 QQ47 was discovered by LINEAR in August, 2003.  This asteroid will 
make a relatively distant approach within 0.0985 au on Sep. 21.
We expect SNRs strong enough for CW and ranging
observations but probably not for detailed delay-Doppler imaging.
Two tracks are scheduled at Goldstone on Sep. 23 and 24. 

This object has an absolute magnitude of 17.4.

Warner et al. reported a
preliminary rotation period of 3.68 h from a partial lightcurve with the caveat
that the actual period could be different by up to ~30%.  

Pravec et al. (2021) report that 2003 QQ47 is a binary system with an orbital
period of 13.065+-0.018 h, a primary rotation period of 2.64 h, and a 
secondary/primary size ratio of ~0.33.  The primary rotation
period is faster than previously estimated.  Pravec et al. also report an Sq taxonomy.

2003 QQ47 was observed with radar at Arecibo in 2014.  The Arecibo echo bandwidth and the
the rotation period obtained by Pravec et al. place a lower bound on the maximum pole-on 
breadth of the primary of about 0.5 km. 

J. Masiero reports that NEOWISE observations in Aug. 2021 
give a preliminary estimate for the diameter of 800 +- 300 m.
If we adopt Dprimary=800 m, then the size ratio from photometry by Pravec et al. suggests
Dsecondary ~ 260 meters.  
The primary will be detectable with radar at Goldstone but the secondary may be too weak.

2003 QQ47 will brighten to 14th magnitude in the third week of September when it should be
a good target for photometry and spectroscopy.  

2003 QQ47 has an unusually high inclination of 62 degrees that is the fourth highest among 
all ~1000 near-Earth asteroids detected by radar.  Although this object approaches within 0.1 au
of Earth at least several times per century, over the next ~500 years its closest approach 
is predicted to be at 0.060 au in 2170.  


Orbital and Physical Characteristics  
Name                     2021 NY1       2003 QQ47
Asteroid number          not numbered   143649 
Discoverer               Pan-STARRS 1   LINEAR
Discovery date           2021 Jul  7    2003 Aug 24
Orbit type               Apollo         Apollo              
Close approach distance  0.010 au       0.0985 au
Close approach distance  3.9 LD         38.3 LD
Close approach date      2021 Sep 22    2021 Sep 23

semimajor axis           2.446 au       1.085 au            
eccentricity             0.595          0.187               
inclination              6.2 deg        62.1 deg             
Orbital period           3.83 years     1.13 y              
perihelion distance      0.990 au       0.882 au            
aphelion distance        3.901 au       2.822 au            
MOID                     0.0094 au      0.0031 au           

absolute magnitude (H)   21.6           17.4                
diameter                ~0.16 km        800+-300 m Masiero et al.
optical albedo           not dark      ~0.3
rotation period          unknown        2.64 h     Pravec et al. 2021 
lightcurve amplitude     unknown        0.07 mag   Pravec et al. 2021
spectral class           unknown        Sq         Pravec et al. 2021
PHA?                     Yes            Yes               
                                        Binary

Last update: 2021 September 22


Goldstone Radar Echo from Asteroid 2021 NY1


Echo power spectrum obtained on September 18.


Discovery M.P.E.C.


2021 NY1
https://www.minorplanetcenter.net/mpec/K21/K21N70.html

2003 QQ47
https://www.minorplanetcenter.net/mpec/K03/K03Q46.html


SNR Calculations

Goldstone SNRs
2021 NY1
2021 NY1:  D = 0.16 km,  P = 2.2 h,  OC albedo = 0.1

DOY      start date       window        RA, dec   dist   runs  SNR/day   SNR/run
256-257 2021 Sep 13-14  20:21-04:18    241,  -6  0.047    292     25         2
257-258 2021 Sep 14-15  20:20-04:06    241,  -8  0.042    319     39         2   
258-259 2021 Sep 15-16  20:19-03:52    240, -10  0.037    351     63         4   
259-260 2021 Sep 16-17  20:19-03:33    239, -12  0.032    388    110         6   
260-261 2021 Sep 17-18  20:22-03:08    237, -15  0.027    427    200        11   
261-262 2021 Sep 18-19  20:30-02:30    235, -20  0.022    456    390        20   Scheduled 21:00-22:05 UT.
262-263 2021 Sep 19-20  20:53-01:20    230, -27  0.017    421    750        39   
...too far south for several days...
268     2021 Sep 25     12:05-14:15     83, -33  0.019    193    360        27   
269     2021 Sep 26     10:33-15:01     79, -27  0.023    322    240        14   
270     2021 Sep 27     09:49-15:15     77, -23  0.028    327    140         8   
271     2021 Sep 28     09:20-15:20     75, -20  0.033    309     78         5   
272     2021 Sep 29     09:00-15:22     74, -18  0.038    286     47         3   
273     2021 Sep 30     08:44-15:22     73, -16  0.044    264     30         2   

For P = 0.22 h, the SNRs will be ~30% of these values so on Sep. 18 we are 
expecting SNR/run ~ 6. 


2003 QQ47 2003 QQ47: D = 0.8 km, P = 2.64 h, OC albedo = 0.1 Primary DOY start date window RA, dec dist runs SNR/day SNR/run 263 2021 Sep 20 05:23-14:27 31, +5 0.117 142 10 1 264 2021 Sep 21 04:43-14:15 25, +11 0.108 161 14 1 265 2021 Sep 22 03:58-13:58 18, +16 0.102 180 18 1 266 2021 Sep 23 03:09-13:38 10, +22 0.099 196 21 2 Scheduled 0855-1335 267 2021 Sep 24 02:15-13:12 2, +28 0.099 206 21 2 Scheduled 0840-1310 268 2021 Sep 25 01:21-12:43 352, +33 0.101 208 20 1 269 2021 Sep 26 00:26-12:10 342, +37 0.106 204 16 1 270-271 2021 Sep 26-27 23:36-11:36 333, +40 0.114 195 13 1 The SNR/run is about 2/3 of values we previously estimated using a larger diameter and a slower rotation period. Secondary: SNR/run ~ 1 so it will take some luck to see an echo. Bandwidths: Primary B ~ 30 Hz Secondary B ~ 2 Hz

Track Assignments


DOY    BOA   BOT   EOT   EOA
261    1930  2100  2205  2235  GSSR Ast 2021 NY1
266    0725  0855  1335  1405  GSSR Ast 2003 QQ47
267    0710  0840  1310  1340  GSSR Ast 2003 QQ47


Goldstone tracks:
     UT                 UT         PDT               Duration Round-trip     
DOY  Date               TX Window  TX Window         hh:mm    time (sec)  SNR/run  
261  Sep 18  2021 NY1   2100-2205  1400-1505 Sep 18   1:05        22        20
266  Sep 23  2003 QQ47  0855-1335  0155-0635 Sep 23   4:40        99         2
267  Sep 24  2003 QQ47  0840-1310  0140-0610 Sep 24   4:30        99         2

2021 NY1 rises 30 minutes before the end of precal time so we might be able to start early.

2003 QQ47 will be in the beam as soon as we get the telescope, so we can start
to transmit as soon as we're ready.  2003 QQ47 transmit times do not overlap
view periods for 2021 NY1.



Uncertainties

2021 NY1
JPL/Horizons solution 16, # obs: 87 (94 days)
2021 Sep 15
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_X_3sig  RT_delay_3sig
 2021-Sep-16 00:00 *m  239.82235  -9.49490 0.03699094221927      1.450       35.30       0.003324
 2021-Sep-17 00:00 *m  238.66239 -11.86069 0.03184646835585      2.187       34.96       0.003046
 2021-Sep-18 00:00 *   236.99929 -15.11584 0.02678844650304      3.476 *     34.47       0.002781
 2021-Sep-19 00:00 *   234.45049 -19.82714 0.02188328553905      5.861       33.97       0.002522
 2021-Sep-20 00:00 *   230.12558 -27.06073 0.01726760472263     10.564       35.11       0.002245
 2021-Sep-21 00:00 *   221.45006 -38.69202 0.01325237863339     20.047       47.98       0.001874
 2021-Sep-22 00:00 *   198.48107 -55.61998 0.01055025036759     35.200       88.68       0.001244
 2021-Sep-23 00:00 *   139.12120 -62.77248 0.01025727755109     41.260      103.68       0.000679
 2021-Sep-24 00:00 *   100.21972 -49.42454 0.01253967723578     30.463       64.12       0.001173

JPL/Horizons solution 10, # obs: 63 (76 days)
2021 August 27
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_X_3sig  RT_delay_3sig
 2021-Sep-16 00:00 *m  239.82230  -9.49505 0.03699017294478     11.562       56.07       0.011983
 2021-Sep-17 00:00 *m  238.66231 -11.86090 0.03184573395336     16.057       59.71       0.011478
 2021-Sep-18 00:00 *   236.99916 -15.11615 0.02678775029016     23.383 *     67.08       0.010916 
 2021-Sep-19 00:00 *   234.45027 -19.82763 0.02188263446784     36.147       83.94       0.010231
 2021-Sep-20 00:00 *   230.12513 -27.06156 0.01726701500090     59.959      126.58       0.009260
 2021-Sep-21 00:00 *   221.44894 -38.69344 0.01325189119308    105.269      236.24       0.007573
 2021-Sep-22 00:00 *   198.47732 -55.62179 0.01054995846227    171.989      440.42       0.004294
 2021-Sep-23 00:00 *   139.11451 -62.77183 0.01025727311650    188.669      470.83       0.000950
 2021-Sep-24 00:00 *   100.21727 -49.42299 0.01253988771480    131.100      246.88       0.004334
Pointing improved by a factor of about 4 on Sep. 18. This is very helpful.

JPL/Horizons solution 7, # obs: 54 (54 days)
2021 August 5
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_X_3sig  RT_delay_3sig
 2021-Sep-16 00:00 *m  239.82355  -9.49420 0.03699366581832     88.278      179.71       0.060888
 2021-Sep-17 00:00 *m  238.66390 -11.85970 0.03184912534818    117.348      213.04       0.059060
 2021-Sep-18 00:00 *   237.00130 -15.11439 0.02679101383965    163.583 *    274.95       0.056791 
 2021-Sep-19 00:00 *   234.45337 -19.82490 0.02188571860372    242.251      402.12       0.053652
 2021-Sep-20 00:00 *   230.13016 -27.05710 0.01726980755079    385.553      691.18       0.048608
 2021-Sep-21 00:00 *   221.45881 -38.68616 0.01325412715846    651.049     1377.55       0.039044
 2021-Sep-22 00:00 *   198.50320 -55.61387 0.01055107130671   1026.432     2590.55       0.019781
 2021-Sep-23 00:00 *   139.14972 -62.77890 0.01025674346607   1090.896     2735.37       0.008651
 2021-Sep-24 00:00 *   100.22672 -49.43314 0.01253814424470    737.422     1429.77       0.029519

JPL/Horizons solution 1, # obs: 35 (2 days)
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.            delta POS_3sigma  DOP_X_3sig  RT_delay_3sig
 2021-Sep-16 00:00 *m  240.20538  -9.24398 0.03800240423114  27532.724    16476.33       9.246530
 2021-Sep-17 00:00 *m  239.14910 -11.51020 0.03282871419767  34020.951    18634.41       9.195912
 2021-Sep-18 00:00 *   237.64677 -14.60555 0.02773394498384  43669.099 *  26982.50       9.062003 
 2021-Sep-19 00:00 *   235.37220 -19.04590 0.02277752779302  59038.406    48592.02       8.767471
 2021-Sep-20 00:00 *   231.58567 -25.79997 0.01807952259265  85445.281    99458.30       8.132318
 2021-Sep-21 00:00 *   224.22476 -36.63795 0.01390938470073 132769.543   219728.54       6.709479
 2021-Sep-22 00:00 *   205.52414 -53.22474 0.01089470094675 203561.172   451833.28       3.549558
 2021-Sep-23 00:00 *   150.15432 -64.54953 0.01012653779317 230415.751   553142.77       1.752237
 2021-Sep-24 00:00 *   103.12014 -52.49624 0.01203950241792 167521.058   327192.24       6.157824


2003 QQ47 JPL/Horizons solution 126, # obs: 581 (2003-2021) 2021 Sep 22 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_X_3sig RT_delay_3sig 2021-Sep-22 00:00 * 20.88521 14.12428 0.10438143945913 0.503 2.37 0.000117 2021-Sep-23 00:00 * 13.27851 20.23523 0.09995858182762 0.535 2.70 0.000109 2021-Sep-24 00:00 * 4.54105 26.31061 0.09851792275312 0.550 2.87 0.000103 2021-Sep-25 00:00 * 354.90794 31.77270 0.10018172445709 0.545 2.82 0.000101 2021-Sep-26 00:00 * 344.85421 36.15371 0.10479331674138 0.521 2.59 0.000104 The 3-sigma Doppler uncertainties are about an order of magnitude smaller than the primary bandwidth we expect so we may not see a Doppler correction to the ephemeris.
Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination: 2021 NY1 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Aug-01 00:00 246.33173 2.86989 0.25256707277351 20.867 n.a. 112.6278 /T 150.7/ 45.8736 2021-Aug-03 00:00 245.94894 2.88807 0.24470068681604 20.837 n.a. 110.5447 /T 155.7/ 27.7179 2021-Aug-05 00:00 245.60546 2.88328 0.23675244331633 20.806 n.a. 108.4968 /T 142.2/ 12.5950 2021-Aug-07 00:00 245.30106 2.85586 0.22870121737258 20.774 n.a. 106.4842 /T 121.3/ 2.7479 2021-Aug-09 00:00 245.03510 2.80620 0.22052767070622 20.739 n.a. 104.5068 /T 97.8/ 0.3800 2021-Aug-11 00:00 244.80639 2.73468 0.21221440301971 20.701 n.a. 102.5635 /T 73.2/ 6.8840 2021-Aug-13 00:00 244.61316 2.64164 0.20374636049827 20.661 n.a. 100.6528 /T 48.6/ 21.8806 2021-Aug-15 00:00 244.45280 2.52724 0.19511150604911 20.618 n.a. 98.7723 /T 27.6/ 42.8345 2021-Aug-17 00:00 244.32186 2.39134 0.18630153736740 20.571 n.a. 96.9186 /T 25.8/ 65.5197 2021-Aug-19 00:00 244.21604 2.23325 0.17731237034854 20.520 n.a. 95.0876 /T 45.9/ 85.0162 2021-Aug-21 00:00 244.13035 2.05154 0.16814416843360 20.464 n.a. 93.2744 /T 70.9/ 97.0637 2021-Aug-23 00:00 244.05942 1.84377 0.15880081035276 20.404 n.a. 91.4737 /T 96.2/ 99.5129 2021-Aug-25 00:00 243.99761 1.60619 0.14928894917983 20.338 n.a. 89.6802 /T 120.3/ 92.9028 2021-Aug-27 00:00 243.93888 1.33345 0.13961710238326 20.265 n.a. 87.8879 /T 142.0/ 79.5830 2021-Aug-29 00:00 243.87647 1.01816 0.12979512643130 20.185 n.a. 86.0903 /T 157.2/ 62.3157 2021-Aug-31 00:00 243.80236 0.65004 0.11983405381043 20.095 n.a. 84.2797 /T 153.9/ 43.5333 2021-Sep-02 00:00 243.70665 0.21467 0.10974607030911 19.995 n.a. 82.4467 /T 136.1/ 25.4353 2021-Sep-04 00:00 243.57653 -0.30866 0.09954449420821 19.881 n.a. 80.5795 /T 113.8/ 10.4547 2021-Sep-06 00:00 243.39444 -0.95056 0.08924382346739 19.751 n.a. 78.6619 /T 89.3/ 1.4966 2021-Sep-08 00:00 243.13467 -1.75803 0.07886016375840 19.600 n.a. 76.6707 /T 63.4/ 1.3469 2021-Sep-10 00:00 242.75655 -2.80706 0.06841260196855 19.422 n.a. 74.5702 /T 37.2/ 11.1816 2021-Sep-12 00:00 242.19037 -4.22880 0.05792633501176 19.210 n.a. 72.3020 /T 16.7/ 29.3390 2021-Sep-14 00:00 241.30499 -6.26986 0.04743928948049 18.951 n.a. 69.7643 /T 27.6/ 51.7148 2021-Sep-16 00:00 239.81976 -9.44954 0.03701853524283 18.628 n.a. 66.7667 /T 53.3/ 73.3642 2021-Sep-18 00:00 237.00180 -15.04763 0.02681316793449 18.217 n.a. 62.9416 /T 80.9/ 89.9674 2021-Sep-20 00:00 230.14858 -26.94092 0.01728478694697 18. n.a. 57.8639 /T 109.5/ 98.7326 2021-Sep-22 00:00 198.70002 -55.44170 0.01054317555055 17. n.a. 57.9643 /T 124.9/ 98.8262 2021-Sep-24 00:00 100.35080 -49.44469 0.01250375671902 15.471 n.a. 83.6272 /L 83.6/ 91.1646 2021-Sep-26 00:00 81.29165 -29.62329 0.02081619290104 15.938 n.a. 99.4216 /L 54.4/ 77.6384 2021-Sep-28 00:00 75.94465 -21.14836 0.03066545840677 16.527 n.a. 106.6486 /L 46.6/ 60.3413 2021-Sep-30 00:00 73.43330 -16.79052 0.04093507930418 17.009 n.a. 111.1105 /L 55.0/ 41.3120 NY1 might get swept up by the NEOWISE spacecraft around Aug. 25 +- a few days. --> It was not detected by NEOWISE.
2003 QQ47 Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu% 2021-Aug-17 00:00 64.41106 -27.18279 0.65005443750748 18.948 n.a. 89.3566 /L 129.8/ 65.5197 2021-Aug-19 00:00 64.34508 -26.84323 0.61931546210455 18.844 n.a. 90.6284 /L 116.2/ 85.0162 2021-Aug-21 00:00 64.22561 -26.47796 0.58817672887822 18.731 n.a. 91.9592 /L 97.9/ 97.0637 2021-Aug-23 00:00 64.04484 -26.08095 0.55666750371647 18.610 n.a. 93.3569 /L 78.7/ 99.5129 2021-Aug-25 00:00 63.79297 -25.64466 0.52481974568943 18.478 n.a. 94.8318 /L 61.3/ 92.9028 2021-Aug-27 00:00 63.45753 -25.15947 0.49266939413078 18.335 n.a. 96.3972 /L 48.5/ 79.5830 2021-Aug-29 00:00 63.02256 -24.61281 0.46025767258967 18.178 n.a. 98.0704 /L 43.6/ 62.3157 2021-Aug-31 00:00 62.46736 -23.98805 0.42763263355263 18.006 n.a. 99.8740 /L 48.7/ 43.5333 2021-Sep-02 00:00 61.76483 -23.26274 0.39485141354701 17.816 n.a. 101.8381 /L 61.7/ 25.4353 2021-Sep-04 00:00 60.87873 -22.40601 0.36198379730927 17.605 n.a. 104.0037 /L 79.4/ 10.4547 2021-Sep-06 00:00 59.75984 -21.37429 0.32911791260367 17.369 n.a. 106.4272 /L 99.9/ 1.4966 2021-Sep-08 00:00 58.33977 -20.10461 0.29636942418896 17.102 n.a. 109.1889 /L 121.5/ 1.3469 2021-Sep-10 00:00 56.52118 -18.50337 0.26389689352277 16.798 n.a. 112.4041 /L 140.1/ 11.1816 2021-Sep-12 00:00 54.16157 -16.42741 0.23192892293819 16.448 n.a. 116.2439 /L 145.4/ 29.3390 2021-Sep-14 00:00 51.04569 -13.65201 0.20081479247295 16.042 n.a. 120.9643 /L 130.7/ 51.7148 2021-Sep-16 00:00 46.83887 -9.81873 0.17112201596364 15.565 n.a. 126.9445 /L 106.2/ 73.3642 2021-Sep-18 00:00 41.01100 -4.36768 0.14382413356500 15.010 n.a. 134.6852 /L 77.6/ 89.9674 2021-Sep-20 00:00 32.73540 3.45843 0.12063149450649 14.387 n.a. 144.4725 /L 46.3/ 98.7326 2021-Sep-22 00:00 20.87175 14.14073 0.10436289139928 13.813 n.a. 154.1952 /L 16.2/ 98.8262 2021-Sep-24 00:00 4.52123 26.32768 0.09851399090564 13.687 n.a. 153.9245 /L 31.8/ 91.1646 2021-Sep-26 00:00 344.83083 36.16588 0.10480451475743 14.141 n.a. 141.2839 /T 64.9/ 77.6384 2021-Sep-28 00:00 325.84233 41.23634 0.12128987404927 14.784 n.a. 127.4968 /T 91.6/ 60.3413 2021-Sep-30 00:00 310.88529 42.71975 0.14442965120034 15.409 n.a. 116.6031 /T 108.6/ 41.3120 This will be a good target for lightcurves and spectroscopy despite the nearly full Moon.

Setups


2021 NY1: For a rotation period of 0.222 h, and if D ~ 0.16 km, then the bandwidth
could be about 72 Hz.  This is twice as wide as the 3-sigma Doppler uncertainty so we
might not see a Doppler correction to the ephemeris.

2003 QQ47: We are expecting a bandwidth of roughly 30 Hz for the primary and 2 Hz 
for the secondary.  


CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           no hopping
Bandwidth:               5000 Hz 
TXoffset                 +500 Hz
FFT                      1000 for 5.0 Hz resolution 

Ranging setups:
---------------------------------------------------------------------------
10-usec
baud             10 usec
code            127
PRP            1270 usec
ncoh              1 
bandwidth       787 Hz   
FFT             128
resolution       6.15 Hz
TXoffset       +100 Hz  (echo in column 80)
---------------------------------------------------------------------------
11-usec 
baud             11 usec
code            127
PRP            1397 usec
ncoh              1 
bandwidth       716 Hz   
FFT             128
resolution      5.6 Hz
TXoffset     +100 Hz  (echo in column 82) 
-------------------------------------------------------------------------
1-usec 
baud              1 usec
code            255
ncoh              8
bandwidth       490 Hz   
FFT             128
resolution        3.8 Hz
TXoffset        +50 Hz  (echo in column 77)
---------------------------------------------------------------------

Instructions

NOTE: Data should be moved to the appropriate subdirectories in aardvark:/export/data0/2021ny1/raw/

POINTING:

  OSOD and predicts are on aardvark:



POINTING  

...Not yet available...

Transmit offsets are given in millidegrees.  


PRDX.OUT.14f-14-14.s?? TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL

2021 NY1 GOLDSTONE MASTERLOG

============================================================================== ----------------------------------------------------- ...Not yet available... -----------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 183-601 | FAX: (818) 393-4445 Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov California Institute of Technology | Plan: To live long and prosper Pasadena, CA 91109-8099 https://echo.jpl.nasa.gov/asteroids/2021NY1/2021NY1.2021.goldstone.planning.html

Asteroid Radar Astronomy
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