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
2004-04-01 13:33:43 C 12 13 29.137 +03 54 51.29 r 413
2004-04-01 13:36:23 C 12 13 29.148 +03 54 54.24 r 413
2004-04-01 13:39:03 C 12 13 29.154 +03 54 57.20 r 413
2004-04-01 20:47:24 C 12 13 42.11 +04 01 05.2 o 198
2004-04-01 20:52:00 C 12 13 42.18 +04 01 10.3 o 198
2004-04-01 21:05:01 C 12 13 42.31 +04 01 25.2 o 198
2004-04-01 21:05:55 C 12 13 42.40 +04 01 30.0 r 203
2004-04-01 21:11:55 C 12 13 42.40 +04 01 33.0 o 198
2004-04-01 21:15:52 C 12 13 42.58 +04 01 40.0 r A16
2004-04-01 21:16:30 C 12 13 42.44 +04 01 38.0 o 198
2004-04-01 21:24:02 C 12 13 42.68 +04 01 48.8 r A16
2004-04-01 21:26:57 C 12 13 41.10 +04 01 39.8 o 084
2004-04-01 21:40:17 C 12 13 42.82 +04 02 07.6 r A16
2004-04-01 21:49:25 C 12 13 42.83 +04 02 18.7 r 203
2004-04-02 08:11:04 C 12 14 00.51 +04 14 42.9 16.9 c 608
2004-04-02 08:26:26 C 12 14 00.59 +04 15 00.8 17.0 c 608
2004-04-02 08:42:24 C 12 14 00.65 +04 15 19.5 16.9 c 608
2004-04-02 18:42:23 C 12 14 17.39 +04 26 08.2 o 084
2004-04-03 08:28:20 C 12 14 41.38 +04 43 22.2 16.2 c 608
2004-04-03 08:43:16 C 12 14 41.46 +04 43 40.3 16.2 c 608
2004-04-03 08:58:54 C 12 14 41.54 +04 43 59.3 16.2 c 608
2004-04-03 22:15:11 C 12 15 04.02 +04 59 22.7 o 084
2004-04-04 22:15:51 C 12 15 51.78 +05 29 49.9 o 084
2004-04-05 23:04:49 C 12 16 45.79 +06 02 49.1 o 084
2004-04-06 01:40:37 C 12 16 57.04 +06 06 41.6 15.3 d H67
2004-04-06 01:58:50 C 12 16 57.54 +06 07 07.7 15.3 d H67
2004-04-06 02:28:49 C 12 16 58.19 +06 07 49.3 15.2 d H67
2004-04-06 09:02:06 C 12 17 12.01 +06 17 28.6 F65
2004-04-06 09:15:32 C 12 17 12.17 +06 17 47.5 F65
2004-04-06 09:17:57 C 12 17 12.20 +06 17 50.9 F65
2004-04-06 09:22:38 C 12 17 12.25 +06 17 57.4 F65
2004-04-06 09:25:07 C 12 17 12.29 +06 18 00.9 F65
2004-04-06 09:39:04 C 12 17 12.45 +06 18 20.3 F65
2004-04-06 09:41:30 C 12 17 12.48 +06 18 23.6 F65
2004-04-06 09:53:16 C 12 17 12.63 +06 18 39.9 F65
2004-04-06 09:57:31 C 12 17 12.67 +06 18 45.8 F65
2004-04-06 10:02:22 C 12 17 12.74 +06 18 52.4 F65
2004-04-06 10:04:42 C 12 17 12.76 +06 18 55.8 F65
2004-04-06 10:12:49 C 12 17 12.86 +06 19 07.0 F65
2004-04-06 10:15:04 C 12 17 12.88 +06 19 10.2 F65
2004-04-06 10:24:46 C 12 17 13.01 +06 19 23.6 F65
2004-04-06 10:29:10 C 12 17 13.06 +06 19 29.8 F65
2004-04-06 10:42:03 C 12 17 13.22 +06 19 47.4 F65
2004-04-06 10:47:28 C 12 17 13.28 +06 19 54.9 F65
2004-04-06 10:56:36 C 12 17 13.41 +06 20 07.6 F65
2004-04-06 14:02:41 C 12 17 17.26 +06 24 22.1 F65
2004-04-06 14:05:28 C 12 17 17.33 +06 24 25.6 F65
2004-04-06 14:07:48 C 12 17 17.41 +06 24 29.0 F65
2004-04-06 14:12:45 C 12 17 17.56 +06 24 35.7 F65
2004-04-06 14:18:10 C 12 17 17.69 +06 24 43.1 F65
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)