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
2015-01-24 10:01:08 C 09 28 48.30 +10 13 25.6 R G45
2015-01-24 10:07:06 C 09 28 48.00 +10 13 27.2 R G45
2015-01-24 10:15:00 C 09 28 47.51 +10 13 29.3 R G45
2015-01-24 10:27:08 C 09 28 46.85 +10 13 31.9 R G45
2015-01-24 10:34:54 C 09 28 46.39 +10 13 33.3 R G45
2015-01-24 10:40:46 C 09 28 46.08 +10 13 34.9 R G45
2015-01-25 09:52:47 C 09 27 31.40 +10 19 15.7 R G45
2015-01-25 09:58:39 C 09 27 31.00 +10 19 17.5 R G45
2015-01-25 10:04:37 C 09 27 30.67 +10 19 20.0 R G45
2015-01-25 10:12:31 C 09 27 30.28 +10 19 20.2 R G45
2015-01-25 10:18:35 C 09 27 29.89 +10 19 23.4 R G45
2015-01-25 10:26:27 C 09 27 29.41 +10 19 24.9 R G45
2015-01-25 10:32:19 C 09 27 29.00 +10 19 28.3 R G45
2015-01-25 10:38:18 C 09 27 28.67 +10 19 28.3 R G45
2015-01-26 09:43:40 C 09 26 10.80 +10 25 30.6 R G45
2015-01-26 09:49:38 C 09 26 10.51 +10 25 31.3 R G45
2015-01-26 09:55:30 C 09 26 10.14 +10 25 33.9 R G45
2015-01-26 10:04:11 C 09 26 09.62 +10 25 36.6 R G45
2015-01-26 10:10:15 C 09 26 09.26 +10 25 37.9 R G45
2015-01-26 10:23:56 C 09 26 08.38 +10 25 41.5 R G45
2015-01-26 10:29:48 C 09 26 08.04 +10 25 42.7 R G45
2015-01-27 09:40:14 C 09 24 46.56 +10 32 08.6 R G45
2015-01-27 09:46:11 C 09 24 46.16 +10 32 10.0 R G45
2015-01-27 10:05:57 C 09 24 44.89 +10 32 15.8 R G45
2015-01-27 10:13:39 C 09 24 44.41 +10 32 17.8 R G45
2015-01-27 10:19:37 C 09 24 44.00 +10 32 19.5 R G45
2015-01-27 10:25:29 C 09 24 43.62 +10 32 21.1 R G45
2015-02-08 06:32:40 C 09 04 09.04 +12 17 15.9 q 703
2015-02-08 06:39:55 C 09 04 08.35 +12 17 20.0 q 703
2015-02-08 06:54:05 C 09 04 07.13 +12 17 26.1 q G96
2015-02-08 06:54:25 C 09 04 07.15 +12 17 25.3 q 703
2015-02-08 07:06:35 C 09 04 06.03 +12 17 31.6 q G96
2015-02-08 07:19:05 C 09 04 04.93 +12 17 37.2 q G96
2015-02-08 07:31:37 C 09 04 03.81 +12 17 42.5 q G96
2015-02-08 08:21:49 C 09 03 59.38 +12 18 04.5 q G96
2015-02-08 08:40:43 C 09 03 57.71 +12 18 12.9 q G96
2015-02-08 08:55:28 C 09 03 56.41 +12 18 19.3 q G96
2015-02-08 09:10:19 C 09 03 55.10 +12 18 25.6 q G96
2015-02-08 17:09:55 C 09 03 15.57 +12 21 58.7 q D29
2015-02-08 17:36:35 C 09 03 13.19 +12 22 10.1 q D29
2015-02-08 18:03:14 C 09 03 10.85 +12 22 22.0 q D29
2015-02-09 04:22:50 C 09 02 20.84 +12 26 59.0 q G96
2015-02-09 04:34:20 C 09 02 19.82 +12 27 04.2 q G96
2015-02-09 04:45:52 C 09 02 18.80 +12 27 09.6 q G96
2015-02-09 04:57:23 C 09 02 17.79 +12 27 14.8 q G96
2015-02-11 17:09:06 C 08 57 10.40 +12 54 55.8 q D29
2015-02-11 17:33:13 C 08 57 08.21 +12 55 06.6 q D29
2015-02-11 17:57:21 C 08 57 05.99 +12 55 17.8 q D29
2015-02-13 14:32:14 C 08 53 16.56 +13 16 28.2 q D29
2015-02-13 14:53:49 C 08 53 14.60 +13 16 38.7 q D29
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)