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
2004-04-27 05:57:36 C 13 25 54.76 +27 49 57.1 14.7 c 704
2004-04-27 06:12:30 C 13 25 59.08 +27 51 03.7 15.0 c 704
2004-04-27 06:27:25 C 13 26 03.44 +27 52 09.8 14.5 c 704
2004-04-27 06:42:19 C 13 26 07.80 +27 53 15.9 14.7 c 704
2004-04-27 06:57:41 C 13 26 12.28 +27 54 23.5 14.7 c 704
2004-04-27 19:45:12 C 13 31 01.99 +28 51 06.6 r 557
2004-04-27 20:14:57 C 13 31 12.00 +28 53 28.1 r 557
2004-04-27 20:44:29 C 13 31 21.88 +28 55 47.7 r 557
2004-04-27 21:14:57 C 13 31 32.03 +28 58 10.8 r 557
2004-04-27 21:43:46 C 13 31 41.60 +29 00 25.0 r 557
2004-04-27 22:15:11 C 13 31 52.06 +29 02 50.2 r 557
2004-04-27 22:44:55 C 13 32 01.96 +29 05 06.6 r 557
2004-04-27 23:12:38 C 13 32 11.26 +29 07 12.7 r 557
2004-04-27 23:44:57 C 13 32 22.19 +29 09 38.7 r 557
2004-04-28 00:14:58 C 13 32 32.46 +29 11 53.4 r 557
2004-04-28 00:45:06 C 13 32 42.87 +29 14 07.4 r 557
2004-04-28 01:14:32 C 13 32 53.21 +29 16 17.8 r 557
2004-04-28 01:45:00 C 13 33 04.09 +29 18 32.0 r 557
2004-04-28 02:14:36 C 13 33 14.83 +29 20 41.5 r 557
2004-04-28 04:10:04 C 13 34 18.92 +29 31 09.9 d 703
2004-04-28 04:23:15 C 13 34 23.41 +29 32 14.7 d 703
2004-04-28 04:36:32 C 13 34 27.92 +29 33 19.4 d 703
2004-04-28 05:18:35 C 13 34 42.02 +29 36 43.6 d 703
2004-04-28 05:31:42 C 13 34 44.74 +29 37 21.7 d 712
2004-04-28 05:42:10 C 13 34 48.26 +29 38 11.3 d 712
2004-04-28 05:45:29 C 13 34 49.39 +29 38 27.4 d 712
2004-04-28 05:58:56 C 13 34 53.95 +29 39 30.8 d 712
2004-04-28 06:03:29 C 13 34 55.47 +29 39 51.9 d 712
2004-04-28 06:07:30 C 13 34 56.83 +29 40 11.0 d 712
2004-04-28 06:13:02 C 13 34 58.70 +29 40 36.9 d 712
2004-04-28 06:16:30 C 13 34 59.90 +29 40 53.1 d 712
2004-04-28 06:20:52 C 13 35 01.28 +29 41 11.8 d 712
2004-04-28 12:28:21 C 13 37 36.32 +30 10 16.6 355
2004-04-28 12:30:40 C 13 37 37.13 +30 10 28.2 355
2004-04-28 12:32:03 C 13 37 37.63 +30 10 35.2 355
2004-04-28 12:33:35 C 13 37 38.17 +30 10 42.4 355
2004-04-28 12:34:58 C 13 37 38.66 +30 10 49.0 355
2004-04-28 13:25:26 C 13 37 56.73 +30 14 56.4 r 379
2004-04-28 13:27:04 C 13 37 57.28 +30 15 04.1 r 379
2004-04-28 13:32:01 C 13 37 59.01 +30 15 26.9 r 379
2004-04-28 13:43:16 C 13 38 02.99 +30 16 22.5 r 379
2004-04-28 13:46:35 C 13 38 04.11 +30 16 38.0 r 379
2004-04-28 13:48:13 C 13 38 04.70 +30 16 46.2 r 379
2004-04-28 13:51:31 C 13 38 05.87 +30 17 02.3 r 379
2004-04-28 13:53:11 C 13 38 06.41 +30 17 09.9 r 379
2004-04-28 20:00:48 C 13 40 47.44 +30 45 16.7 r 557
2004-04-28 20:30:21 C 13 40 58.77 +30 47 43.9 r 557
2004-04-28 21:00:38 C 13 41 10.34 +30 50 13.9 r 557
2004-04-28 21:21:04 C 13 41 20.06 +30 52 04.7 r A16
2004-04-28 21:27:33 C 13 41 22.47 +30 52 36.8 r A16
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)