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
2004-07-28 07:48:52 C 22 14 01.33 -00 00 45.4 r H41
2004-07-28 23:12:14 C 22 13 13.70 -00 15 59.3 c 113
2004-07-28 23:14:19 C 22 13 13.61 -00 16 00.8 c 113
2004-07-28 23:16:23 C 22 13 13.46 -00 16 02.9 c 113
2004-07-28 23:18:29 C 22 13 13.32 -00 16 04.9 c 113
2004-07-28 23:20:34 C 22 13 13.17 -00 16 07.0 c 113
2004-07-29 00:24:08 C 22 13 09.36 -00 17 08.4 r 240
2004-07-29 00:27:16 C 22 13 09.16 -00 17 11.4 r 240
2004-07-29 00:30:24 C 22 13 08.97 -00 17 14.5 r 240
2004-07-29 00:33:32 C 22 13 08.77 -00 17 17.6 r 240
2004-07-29 00:35:37 C 22 13 08.64 -00 17 19.6 r 240
2004-07-29 00:36:39 C 22 13 08.58 -00 17 20.6 r 240
2004-07-29 00:41:53 C 22 13 08.24 -00 17 25.6 r 240
2004-07-29 00:42:55 C 22 13 08.18 -00 17 26.7 r 240
2004-07-29 00:48:08 C 22 13 07.85 -00 17 31.7 r 240
2004-08-06 05:30:58 C 22 02 28.04 -03 26 24.9 r H41
2004-08-06 05:33:07 C 22 02 27.94 -03 26 27.2 r H41
2004-08-06 05:37:56 C 22 02 27.58 -03 26 33.0 r H41
2004-08-06 05:42:38 C 22 02 27.28 -03 26 36.9 r H41
2004-08-07 00:02:42 C 22 01 26.94 -03 43 42.9 r 941
2004-08-07 00:03:20 C 22 01 26.90 -03 43 43.5 r 941
2004-08-07 00:03:59 C 22 01 26.86 -03 43 44.1 r 941
2004-08-07 00:04:37 C 22 01 26.81 -03 43 44.7 r 941
2004-08-07 00:05:15 C 22 01 26.77 -03 43 45.2 r 941
2004-08-07 23:29:13 C 22 00 10.35 -04 05 23.7 c 046
2004-08-07 23:30:34 C 22 00 10.29 -04 05 25.7 c 046
2004-08-07 23:31:28 C 22 00 10.21 -04 05 26.9 c 046
2004-08-07 23:32:28 C 22 00 10.10 -04 05 27.1 c 046
2004-08-07 23:33:25 C 22 00 10.10 -04 05 27.7 c 046
2004-08-07 23:34:20 C 22 00 10.05 -04 05 29.2 c 046
2004-08-07 23:35:17 C 22 00 09.95 -04 05 29.9 c 046
2004-08-07 23:36:11 C 22 00 09.93 -04 05 30.4 c 046
2004-08-08 07:19:11 C 21 59 44.63 -04 12 26.2 r H41
2004-08-08 07:25:35 C 21 59 44.20 -04 12 32.5 r H41
2004-08-08 07:32:19 C 21 59 43.79 -04 12 38.1 r H41
2004-08-08 07:34:27 C 21 59 43.58 -04 12 39.8 r H41
2004-08-08 07:37:18 C 21 59 43.42 -04 12 42.7 r H41
2004-08-08 23:15:03 C 21 58 53.84 -04 27 02.4 c 046
2004-08-08 23:17:05 C 21 58 53.67 -04 27 04.0 c 046
2004-08-08 23:17:50 C 21 58 53.61 -04 27 05.1 c 046
2004-08-08 23:20:02 C 21 58 53.46 -04 27 06.8 c 046
2004-08-08 23:20:47 C 21 58 53.42 -04 27 07.9 c 046
2004-08-08 23:23:28 C 21 58 53.27 -04 27 10.4 c 046
2004-08-09 06:01:19 C 21 58 33.04 -04 33 00.6 17.6 c 704
2004-08-09 06:14:46 C 21 58 32.18 -04 33 13.0 17.7 c 704
2004-08-09 06:28:17 C 21 58 31.31 -04 33 25.1 17.8 c 704
2004-08-09 06:41:53 C 21 58 30.45 -04 33 36.9 17.8 c 704
2004-08-10 07:48:50 C 21 57 09.23 -04 56 07.5 r H41
2004-08-10 07:51:11 C 21 57 09.14 -04 56 09.1 r H41
2004-08-10 07:53:18 C 21 57 08.97 -04 56 11.0 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)