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
2004-03-30 05:15:25 C 12 12 15.11 +02 53 49.5 r H41
2004-03-30 05:17:27 C 12 12 15.12 +02 53 51.1 r H41
2004-03-30 05:27:22 C 12 12 16.53 +02 54 05.2 c 701
2004-03-30 06:20:38 C 12 12 16.47 +02 54 59.1 c 701
2004-03-30 07:14:55 C 12 12 16.46 +02 55 53.6 c 701
2004-03-30 07:21:42 C 12 12 16.50 +02 55 59.7 d 703
2004-03-30 07:36:29 C 12 12 16.51 +02 56 14.7 d 703
2004-03-30 07:51:17 C 12 12 16.52 +02 56 29.4 d 703
2004-03-30 08:06:04 C 12 12 16.49 +02 56 44.2 d 703
2004-03-30 19:16:52 C 12 12 34.11 +03 07 45.0 r 557
2004-03-30 19:45:33 C 12 12 34.40 +03 08 14.8 r 557
2004-03-30 20:17:27 C 12 12 34.69 +03 08 47.8 r 557
2004-03-30 20:46:11 C 12 12 34.91 +03 09 17.6 r 557
2004-03-30 21:18:06 C 12 12 35.12 +03 09 50.7 r 557
2004-03-30 21:46:47 C 12 12 35.29 +03 10 20.4 r 557
2004-03-30 22:18:42 C 12 12 35.46 +03 10 53.4 r 557
2004-03-30 22:51:23 C 12 12 35.64 +03 11 27.2 r 557
2004-03-30 23:16:54 C 12 12 35.78 +03 11 53.5 r 557
2004-03-30 23:47:25 C 12 12 35.96 +03 12 25.1 r 557
2004-03-31 00:16:48 C 12 12 36.15 +03 12 55.5 r 557
2004-03-31 00:41:03 12 12 36.11 +03 13 11.5 o 084
2004-03-31 00:46:11 C 12 12 36.37 +03 13 25.7 r 557
2004-03-31 01:16:33 C 12 12 36.66 +03 13 57.3 r 557
2004-03-31 02:03:09 C 12 12 37.10 +03 14 45.1 r 557
2004-03-31 08:17:31 C 12 12 45.22 +03 21 34.2 r H41
2004-03-31 08:24:40 C 12 12 45.27 +03 21 41.2 r H41
2004-03-31 08:26:50 C 12 12 45.28 +03 21 43.6 r H41
2004-03-31 08:28:51 C 12 12 45.29 +03 21 45.5 r H41
2004-03-31 12:58:21 C 12 12 55.127 +03 28 04.09 r 413
2004-03-31 13:00:41 C 12 12 55.129 +03 28 06.61 r 413
2004-03-31 13:03:00 C 12 12 55.130 +03 28 09.14 r 413
2004-03-31 14:29:13 C 12 12 56.21 +03 28 08.5 r 379
2004-03-31 14:31:23 C 12 12 56.21 +03 28 10.5 r 379
2004-03-31 19:17:17 C 12 13 05.66 +03 32 58.3 r 557
2004-03-31 19:46:00 C 12 13 06.00 +03 33 29.4 r 557
2004-03-31 20:14:43 C 12 13 06.31 +03 34 00.9 r 557
2004-03-31 20:46:38 C 12 13 06.61 +03 34 35.3 r 557
2004-03-31 21:15:21 C 12 13 06.85 +03 35 06.4 r 557
2004-03-31 21:22:53 C 12 13 07.34 +03 35 18.8 r 203
2004-03-31 21:47:15 C 12 13 07.10 +03 35 40.9 r 557
2004-03-31 21:56:49 C 12 13 07.55 +03 35 56.1 r 203
2004-03-31 22:15:59 C 12 13 07.31 +03 36 11.9 r 557
2004-03-31 22:44:42 C 12 13 07.51 +03 36 43.2 r 557
2004-03-31 23:16:35 C 12 13 07.75 +03 37 17.7 r 557
2004-03-31 23:48:31 C 12 13 07.98 +03 37 52.1 r 557
2004-04-01 00:17:13 C 12 13 08.22 +03 38 23.0 r 557
2004-04-01 00:45:56 C 12 13 08.51 +03 38 53.8 r 557
2004-04-01 01:18:23 C 12 13 08.82 +03 39 28.9 r 557
2004-04-01 01:23:08 12 13 08.94 +03 39 24.8 o 084
2004-04-01 01:47:07 C 12 13 09.18 +03 39 59.9 r 557
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)