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
2015-02-13 15:15:25 C 08 53 12.58 +13 16 48.9 q D29
2015-02-17 03:54:28 C 08 45 53.50 +13 57 57.6 q 703
2015-02-17 04:00:17 C 08 45 53.05 +13 58 00.6 q 703
2015-02-17 04:10:18 C 08 45 52.09 +13 58 06.0 q 703
2015-02-17 15:17:51 C 08 44 53.77 +14 03 33.5 q D29
2015-02-17 15:22:55 C 08 44 53.28 +14 03 35.8 q D29
2015-02-17 15:53:24 C 08 44 50.42 +14 03 51.1 q D29
2015-02-17 15:58:28 C 08 44 50.00 +14 03 53.3 q D29
2015-02-17 16:28:57 C 08 44 47.21 +14 04 08.7 q D29
2015-02-17 16:34:02 C 08 44 46.73 +14 04 10.8 q D29
2015-02-18 06:57:49 C 08 43 34.147 +14 11 19.17 L F51
2015-02-18 07:16:29 C 08 43 32.435 +14 11 28.61 L F51
2015-02-18 07:34:52 C 08 43 30.750 +14 11 37.84 L F51
2015-02-18 07:53:15 C 08 43 29.055 +14 11 47.04 L F51
2015-02-18 20:10:43 C 08 42 26.03 +14 17 37.4 q 113
2015-02-18 20:14:08 C 08 42 25.73 +14 17 38.9 q 113
2015-02-18 20:17:36 C 08 42 25.41 +14 17 41.1 q 113
2015-02-19 07:12:18 C 08 41 30.144 +14 23 13.89 L F51
2015-02-19 07:30:45 C 08 41 28.461 +14 23 23.19 L F51
2015-02-19 07:49:16 C 08 41 26.770 +14 23 32.46 L F51
2015-02-19 08:46:37 C 08 41 20.31 +14 23 54.9 R G45
2015-02-19 08:58:27 C 08 41 19.18 +14 24 01.2 R G45
2015-02-19 09:01:28 C 08 41 18.98 +14 24 01.5 R G45
2015-02-19 09:13:35 C 08 41 17.95 +14 24 07.3 R G45
2015-02-20 08:32:54 C 08 39 20.31 +14 35 33.2 R G45
2015-02-20 08:38:46 C 08 39 19.78 +14 35 35.7 R G45
2015-02-20 08:44:45 C 08 39 19.26 +14 35 39.8 R G45
2015-02-20 09:05:39 C 08 39 17.46 +14 35 49.9 R G45
2015-02-22 06:04:51 C 08 35 35.78 +14 57 47.3 q 703
2015-02-22 06:12:04 C 08 35 35.20 +14 57 50.7 q 703
2015-02-22 06:26:27 C 08 35 33.85 +14 57 57.8 q 703
2015-02-25 08:08:20 C 08 29 45.46 +15 33 11.6 R G45
2015-02-25 08:29:04 C 08 29 43.81 +15 33 21.2 R G45
2015-02-25 08:44:45 C 08 29 42.55 +15 33 27.9 R G45
2015-02-25 08:50:37 C 08 29 42.09 +15 33 31.1 R G45
2015-02-25 08:56:35 C 08 29 41.59 +15 33 33.6 R G45
2015-02-26 07:46:30 C 08 27 59.48 +15 44 16.7 R G45
2015-02-26 07:52:28 C 08 27 59.02 +15 44 18.8 R G45
2015-02-26 07:58:20 C 08 27 58.59 +15 44 22.0 R G45
2015-02-26 08:12:59 C 08 27 57.40 +15 44 28.4 R G45
2015-02-26 08:25:07 C 08 27 56.46 +15 44 33.7 R G45
2015-02-26 08:37:38 C 08 27 55.50 +15 44 39.3 R G45
2015-02-26 08:43:35 C 08 27 55.03 +15 44 42.1 R G45
2015-02-26 08:49:28 C 08 27 54.56 +15 44 44.2 R G45
2015-03-06 21:55:18 C 08 14 59.90 +17 13 36.6 q K38
2015-03-06 23:36:27 C 08 14 54.34 +17 14 15.8 q K38
2015-03-10 13:51:38 C 08 10 59.88 +17 47 07.7 q D29
2015-03-10 14:11:57 C 08 10 58.95 +17 47 14.6 q D29
2015-03-10 14:32:16 C 08 10 57.98 +17 47 21.1 q D29
2015-03-13 12:19:42 C 08 08 32.26 +18 11 36.4 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)