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
2015-03-13 12:41:17 C 08 08 31.48 +18 11 43.4 q D29
2015-03-13 13:02:53 C 08 08 30.71 +18 11 50.3 q D29
2015-03-16 05:30:02 C 08 06 50.49 +18 32 21.3 R G45
2015-03-16 05:52:01 C 08 06 49.89 +18 32 27.4 R G45
2015-03-16 06:02:15 C 08 06 49.58 +18 32 30.4 R G45
2015-03-16 06:14:11 C 08 06 49.27 +18 32 33.9 R G45
2015-03-16 08:46:26 C 08 06 46.262 +18 33 26.42 L F51
2015-03-16 09:04:12 C 08 06 45.777 +18 33 31.50 L F51
2015-03-16 09:21:53 C 08 06 45.301 +18 33 36.53 L F51
2015-03-16 09:39:28 C 08 06 44.833 +18 33 41.49 L F51
2015-03-17 05:20:04 C 08 06 22.38 +18 39 30.8 R G45
2015-03-17 05:51:56 C 08 06 21.61 +18 39 38.4 R G45
2015-03-17 06:02:10 C 08 06 21.42 +18 39 41.4 R G45
2015-03-17 06:14:09 C 08 06 21.10 +18 39 45.4 R G45
2015-03-17 08:12:13 C 08 06 19.435 +18 40 26.14 L F51
2015-03-17 08:30:06 C 08 06 18.997 +18 40 31.17 L F51
2015-03-17 08:48:06 C 08 06 18.565 +18 40 36.18 L F51
2015-03-17 09:06:09 C 08 06 18.133 +18 40 41.11 L F51
2015-03-21 13:11:16 C 08 05 15.41 +19 07 46.5 q D29
2015-03-21 13:31:35 C 08 05 15.18 +19 07 50.9 q D29
2015-03-21 13:51:55 C 08 05 15.00 +19 07 55.4 q D29
2015-03-23 19:35:29 C 08 05 15.84 +19 20 36.6 q 246
2015-03-23 19:38:16 C 08 05 15.84 +19 20 36.4 q 246
2015-03-23 19:38:42 C 08 05 15.80 +19 20 37.4 q 246
2015-03-23 19:39:05 C 08 05 15.87 +19 20 37.6 q 246
2015-03-23 19:40:40 C 08 05 15.80 +19 20 37.5 q 246
2015-03-24 02:40:11 C 08 05 18.07 +19 22 18.8 q G96
2015-03-24 02:46:42 C 08 05 18.08 +19 22 20.4 q G96
2015-03-24 02:53:04 C 08 05 18.06 +19 22 22.0 q G96
2015-03-24 02:59:33 C 08 05 18.03 +19 22 23.3 q G96
2015-04-08 04:29:49 C 08 15 03.07 +20 16 34.1 q G96
2015-04-08 04:43:06 C 08 15 03.61 +20 16 35.7 q G96
2015-04-08 04:50:28 C 08 15 03.88 +20 16 37.1 q G96
2015-04-08 04:57:50 C 08 15 04.28 +20 16 37.7 q G96
2015-08-10 06:38:50 C 16 22 40.671 -15 11 10.84 L F51
2015-08-10 06:56:00 C 16 22 44.524 -15 11 26.23 L F51
2015-08-10 07:13:10 C 16 22 48.375 -15 11 41.48 L F51
2015-08-10 07:30:19 C 16 22 52.241 -15 11 56.72 L F51
2015-10-01 02:44:15 C 19 57 33.01 -19 41 45.5 q G96
2015-10-01 02:51:37 C 19 57 33.87 -19 41 43.5 q G96
2015-10-01 02:58:58 C 19 57 34.76 -19 41 42.2 q G96
2015-10-03 05:18:20 C 20 03 52.180 -19 30 41.99 L F51
2015-10-03 05:34:10 C 20 03 54.079 -19 30 38.23 L F51
2015-10-03 05:50:01 C 20 03 55.968 -19 30 34.60 L F51
2015-10-03 06:05:50 C 20 03 57.871 -19 30 31.14 L F51
2015-10-08 05:17:40 C 20 18 25.141 -19 00 57.69 L F51
2015-10-08 05:33:30 C 20 18 26.955 -19 00 53.50 L F51
2015-10-08 06:05:10 C 20 18 30.594 -19 00 45.17 L F51
2017-12-26 05:11:38 C 05 18 04.32 +18 26 18.7 U G96
2017-12-26 05:19:00 C 05 18 03.68 +18 26 18.6 U G96
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)