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
2004-04-14 21:58:38 C 12 29 59.90 +12 12 34.4 o 198
2004-04-14 22:13:36 C 12 30 00.89 +12 13 06.6 o 198
2004-04-14 22:44:37 C 12 30 01.98 +12 14 13.3 r 118
2004-04-14 22:51:21 C 12 30 03.33 +12 14 27.9 o 198
2004-04-14 23:07:31 C 12 30 04.41 +12 15 02.5 o 198
2004-04-14 23:34:45 C 12 30 06.23 +12 16 01.1 o 198
2004-04-14 23:35:13 C 12 30 05.37 +12 16 00.7 r 118
2004-04-14 23:49:45 C 12 30 07.23 +12 16 33.1 o 198
2004-04-14 23:56:51 C 12 30 06.88 +12 16 47.2 r 118
2004-04-15 05:49:58 C 12 30 43.72 +12 30 10.4 c 704
2004-04-15 06:05:36 C 12 30 44.72 +12 30 45.6 c 704
2004-04-15 06:21:15 C 12 30 45.64 +12 31 19.0 c 704
2004-04-15 06:52:45 C 12 30 47.58 +12 32 27.8 c 704
2004-04-15 11:48:33 C 12 31 21.11 +12 43 12.6 m D89
2004-04-15 11:52:03 C 12 31 21.35 +12 43 20.5 m D89
2004-04-15 11:54:44 C 12 31 21.54 +12 43 26.6 m D89
2004-04-15 12:23:41 C 12 31 23.48 +12 44 32.1 m D89
2004-04-15 20:34:54 C 12 32 12.07 +13 02 32.9 r 557
2004-04-15 20:53:02 C 12 32 13.44 +13 03 14.6 r 557
2004-04-15 23:10:50 C 12 32 23.74 +13 08 28.5 r 557
2004-04-15 23:41:03 C 12 32 26.07 +13 09 36.7 r 557
2004-04-16 01:14:51 C 12 32 43.42 +13 16 08.1 r I05
2004-04-16 01:17:40 C 12 32 43.63 +13 16 14.6 r I05
2004-04-16 03:30:57 C 12 32 54.45 +13 19 19.5 14.7 d H72
2004-04-16 03:35:38 C 12 32 54.82 +13 19 30.5 14.9 d H72
2004-04-16 03:40:18 C 12 32 55.08 +13 19 41.3 14.7 d H72
2004-04-16 03:44:58 C 12 32 55.42 +13 19 52.3 14.3 d H72
2004-04-16 06:06:59 C 12 33 09.15 +13 25 09.2 c 701
2004-04-16 06:38:20 C 12 33 11.29 +13 26 22.8 c 701
2004-04-16 12:46:09 C 12 33 53.86 +13 40 35.5 300
2004-04-16 12:48:44 C 12 33 53.51 +13 40 42.3 r 379
2004-04-16 12:50:54 C 12 33 53.66 +13 40 47.6 r 379
2004-04-16 12:53:02 C 12 33 53.82 +13 40 52.8 r 379
2004-04-16 12:55:11 C 12 33 53.97 +13 40 58.0 r 379
2004-04-16 12:56:09 C 12 33 54.58 +13 40 58.7 300
2004-04-16 12:57:21 C 12 33 54.13 +13 41 03.1 r 379
2004-04-16 12:59:30 C 12 33 54.29 +13 41 08.2 r 379
2004-04-16 13:06:10 C 12 33 55.32 +13 41 22.7 300
2004-04-16 13:16:08 C 12 33 56.06 +13 41 48.1 300
2004-04-16 13:26:10 C 12 33 56.83 +13 42 11.2 300
2004-04-16 13:39:48 C 12 33 57.21 +13 42 43.9 r 379
2004-04-16 13:44:44 C 12 33 57.60 +13 42 55.6 r 379
2004-04-16 13:46:24 C 12 33 57.73 +13 43 00.1 r 379
2004-04-16 13:48:02 C 12 33 57.83 +13 43 03.5 r 379
2004-04-16 13:49:41 C 12 33 57.97 +13 43 07.3 r 379
2004-04-16 13:51:21 C 12 33 58.09 +13 43 11.3 r 379
2004-04-16 19:33:49 C 12 34 39.69 +13 56 09.9 r 557
2004-04-16 20:09:53 C 12 34 42.82 +13 57 38.2 r 557
2004-04-16 20:33:53 C 12 34 44.88 +13 58 36.9 r 557
2004-04-16 21:01:37 C 12 34 48.13 +13 59 48.8 185
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)