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
2004-03-27 06:51:39 C 12 11 03.09 +01 47 57.2 m 683
2004-03-27 07:07:00 C 12 11 02.94 +01 48 11.7 c 701
2004-03-27 07:57:01 C 12 11 02.76 +01 48 55.3 c 701
2004-03-28 06:09:29 C 12 11 25.35 +02 08 47.5 m 683
2004-03-28 06:28:49 C 12 11 25.31 +02 09 05.5 m 683
2004-03-28 06:48:04 C 12 11 25.23 +02 09 23.2 m 683
2004-03-28 07:54:14 C 12 11 24.76 +02 10 21.7 16.3 c 704
2004-03-28 08:09:20 C 12 11 24.73 +02 10 35.7 16.3 c 704
2004-03-28 08:24:00 C 12 11 24.70 +02 10 49.1 16.5 c 704
2004-03-28 08:38:39 C 12 11 24.70 +02 11 02.4 16.6 c 704
2004-03-28 08:53:19 C 12 11 24.70 +02 11 15.9 16.4 c 704
2004-03-28 12:52:45 C 12 11 32.62 +02 14 55.6 r 379
2004-03-28 13:03:31 C 12 11 32.61 +02 15 06.1 r 379
2004-03-28 20:59:46 C 12 11 41.02 +02 22 17.9 r A16
2004-03-28 21:09:14 C 12 11 40.96 +02 22 26.8 r A16
2004-03-28 21:20:49 C 12 11 41.04 +02 22 38.3 r A16
2004-03-28 21:32:43 C 12 11 41.08 +02 22 48.9 r A16
2004-03-28 21:47:38 C 12 11 41.08 +02 23 02.4 r A16
2004-03-28 22:54:14 C 12 11 40.77 +02 24 02.7 r 557
2004-03-28 23:05:37 12 11 40.16 +02 24 05.2 o 084
2004-03-28 23:19:45 C 12 11 40.83 +02 24 26.8 r 557
2004-03-29 00:00:23 C 12 11 40.96 +02 25 05.1 r 557
2004-03-29 00:38:40 C 12 11 41.10 +02 25 41.2 r 557
2004-03-29 01:26:31 C 12 11 41.34 +02 26 26.4 r 557
2004-03-29 02:04:50 C 12 11 41.60 +02 27 02.6 r 557
2004-03-29 07:59:04 C 12 11 48.25 +02 32 57.1 r H41
2004-03-29 08:01:48 C 12 11 48.26 +02 33 00.4 r H41
2004-03-29 08:07:23 C 12 11 48.24 +02 33 05.1 r H41
2004-03-29 08:09:49 C 12 11 48.25 +02 33 07.1 r H41
2004-03-29 08:12:16 C 12 11 48.26 +02 33 09.5 r H41
2004-03-29 19:30:38 C 12 12 05.74 +02 43 52.8 r 557
2004-03-29 19:59:20 C 12 12 05.97 +02 44 21.3 r 557
2004-03-29 20:31:16 C 12 12 06.19 +02 44 52.9 r 557
2004-03-29 20:37:05 C 12 12 06.73 +02 45 02.2 r A16
2004-03-29 20:56:32 C 12 12 06.83 +02 45 21.0 r A16
2004-03-29 20:59:59 C 12 12 06.34 +02 45 21.3 r 557
2004-03-29 21:09:52 C 12 12 06.87 +02 45 33.8 r A16
2004-03-29 21:24:55 C 12 12 06.95 +02 45 48.6 r A16
2004-03-29 21:32:23 C 12 12 06.51 +02 45 53.2 r 557
2004-03-29 22:01:51 C 12 12 06.63 +02 46 22.4 r 557
2004-03-29 22:47:38 C 12 12 06.80 +02 47 07.6 r 557
2004-03-29 23:01:24 12 12 06.20 +02 47 12.8 o 084
2004-03-29 23:15:56 C 12 12 06.91 +02 47 35.6 r 557
2004-03-29 23:44:56 C 12 12 07.03 +02 48 04.2 r 557
2004-03-30 00:16:50 C 12 12 07.18 +02 48 35.7 r 557
2004-03-30 00:45:40 C 12 12 07.33 +02 49 04.1 r 557
2004-03-30 01:21:05 C 12 12 07.58 +02 49 39.0 r 557
2004-03-30 02:01:52 C 12 12 07.92 +02 50 19.3 r 557
2004-03-30 05:08:21 C 12 12 15.09 +02 53 42.1 r H41
2004-03-30 05:13:37 C 12 12 15.10 +02 53 47.8 r H41
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)