89136 (2001 US16)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2527917081 ± 2.00e+00
Semi-major axis (a)1.3559247666 AU ± 3.00e+00
Inclination (i)1.90586628° ± 4.00e+00
Long. of Asc. Node (Ω)175.89512420° ± 5.00e+00
Arg. of Perihelion (ω)67.20134426° ± 6.00e+00
Mean Anomaly (M)222.31602461° ± 6.22e-06
Mean Motion (n)0.6242504816°/day ± 2.07e+00
Perihelion dist (q)1.01315823 AU ± 3.52e+00
Aphelion dist (Q)1.69869130 AU ± 4.63e+00
Orbital Period1.57889551 yr ± 5.24e+00
NGA Modelr2
A23.46177527e-06 AU/d²
Physical Parameters
H (abs. magnitude)20.27
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-27
RMS Residual0.374″
Uncertainty0
Orbit TypeApollo
MOID0.028467 AU
Observations Used1359
Oppositions9
Arc Total2001-2026
First Observation Used2001-10-18
Last Observation Used2026-01-13
Observations (1410)
Date Type RA Dec Mag Band Observatory
2009-11-22 04:44:22 C 03 54 51.35 +16 09 10.9 o 691
2009-11-22 05:09:48 C 03 54 49.48 +16 09 04.6 o 691
2009-11-23 06:44:58 C 03 52 43.75 +16 01 56.9 r G96
2009-11-23 06:53:23 C 03 52 43.03 +16 01 54.6 r G96
2009-11-23 07:01:48 C 03 52 42.31 +16 01 52.1 r G96
2009-11-23 07:10:09 C 03 52 41.62 +16 01 49.9 r G96
2012-09-15 08:21:16 C 02 02 41.38 +11 28 19.5 o 691
2012-09-15 08:46:52 C 02 02 40.11 +11 28 10.3 o 691
2012-09-15 09:12:27 C 02 02 38.82 +11 28 00.8 o 691
2012-09-15 10:40:04 C 02 02 34.51 +11 27 27.5 r G96
2012-09-15 10:47:34 C 02 02 34.22 +11 27 24.9 r G96
2012-09-15 10:55:09 C 02 02 33.86 +11 27 22.2 r G96
2012-09-15 11:02:44 C 02 02 33.43 +11 27 19.2 r G96
2012-11-05 06:51:05 c 00 46 12.041 +02 12 21.34 L F51
2012-11-05 07:12:53 c 00 46 11.244 +02 12 16.51 L F51
2012-11-05 07:34:36 c 00 46 10.452 +02 12 11.95 L F51
2012-11-05 07:56:21 c 00 46 09.661 +02 12 07.13 L F51
2015-01-17 10:33:07 C 09 36 03.85 +09 43 13.0 R G45
2015-01-17 10:45:00 C 09 36 03.41 +09 43 14.7 R G45
2015-01-17 10:53:03 C 09 36 03.11 +09 43 15.8 R G45
2015-01-17 10:59:15 C 09 36 02.84 +09 43 17.0 R G45
2015-01-17 11:18:46 C 09 36 02.11 +09 43 18.7 R G45
2015-01-18 09:42:10 C 09 35 15.835 +09 46 19.74 L F51
2015-01-18 10:01:39 C 09 35 15.035 +09 46 22.59 L F51
2015-01-18 10:21:09 C 09 35 14.237 +09 46 25.40 L F51
2015-01-18 10:40:38 C 09 35 13.433 +09 46 28.22 L F51
2015-01-18 10:46:46 C 09 35 12.31 +09 46 25.6 R G45
2015-01-18 10:58:54 C 09 35 11.81 +09 46 27.2 R G45
2015-01-18 11:06:31 C 09 35 11.50 +09 46 27.9 R G45
2015-01-18 11:12:38 C 09 35 11.24 +09 46 28.3 R G45
2015-01-19 10:26:20 C 09 34 18.30 +09 49 54.3 R G45
2015-01-19 10:32:27 C 09 34 18.02 +09 49 56.3 R G45
2015-01-19 10:38:20 C 09 34 17.75 +09 49 57.0 R G45
2015-01-19 10:40:30 C 09 34 17.62 +09 49 57.5 R G45
2015-01-19 10:46:29 C 09 34 17.44 +09 49 58.3 R G45
2015-01-19 10:52:33 C 09 34 17.16 +09 50 00.0 R G45
2015-01-19 11:00:10 C 09 34 16.84 +09 50 00.7 R G45
2015-01-19 11:06:01 C 09 34 16.55 +09 50 01.6 R G45
2015-01-20 10:23:02 C 09 33 19.72 +09 53 51.2 R G45
2015-01-20 10:29:09 C 09 33 19.45 +09 53 52.8 R G45
2015-01-20 10:37:04 C 09 33 19.09 +09 53 53.3 R G45
2015-01-20 10:43:01 C 09 33 18.83 +09 53 54.1 R G45
2015-01-20 10:56:40 C 09 33 18.19 +09 53 56.0 R G45
2015-01-20 11:02:43 C 09 33 17.88 +09 53 57.2 R G45
2015-01-20 13:04:29 C 09 33 13.054 +09 54 23.07 L F51
2015-01-20 13:40:42 C 09 33 11.345 +09 54 29.21 L F51
2015-01-20 13:59:01 C 09 33 10.483 +09 54 32.29 L F51
2015-01-21 06:58:26 C 09 32 27.37 +09 57 33.1 o 691
2015-01-21 07:27:39 C 09 32 25.96 +09 57 38.5 o 691
2015-01-21 07:56:49 C 09 32 24.52 +09 57 44.1 o 691
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2004-04-28 03:00:00 37745971.83 1 us 2380 -1 -1
2004-04-28 03:00:00 44360.4701 0.2 Hz 2380 -1 -1
2004-04-29 03:22:00 36194545.1 1 us 2380 -1 -1
2004-04-29 03:22:00 41214.5742 0.1 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)