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
2023-07-27 13:35:13 C 00 56 05.075 +09 03 33.12 X F52
2023-07-27 13:50:52 C 00 56 05.486 +09 03 34.54 X F52
2023-07-28 13:07:12 C 00 56 48.451 +09 05 18.60 X F52
2023-07-28 13:24:45 C 00 56 48.890 +09 05 19.88 X F52
2023-07-28 13:42:17 C 00 56 49.319 +09 05 21.00 X F52
2023-07-28 13:59:52 C 00 56 49.735 +09 05 22.34 X F52
2023-09-06 09:57:38 C 00 37 20.734 +04 38 54.64 V G96
2023-09-06 10:04:23 C 00 37 20.230 +04 38 50.64 V G96
2023-09-06 10:13:00 C 00 37 19.618 +04 38 45.24 V G96
2023-09-06 10:19:45 C 00 37 19.128 +04 38 41.24 V G96
2023-09-16 05:39:13 C 00 20 13.614 +02 06 50.36 V 703
2023-09-16 05:54:35 C 00 20 12.566 +02 06 43.20 V 703
2023-09-16 06:02:16 C 00 20 11.897 +02 06 38.74 V 703
2023-09-17 10:22:14 C 00 18 02.976 +01 47 59.41 X F52
2023-09-17 10:36:25 C 00 18 01.819 +01 47 50.08 X F52
2023-09-17 10:50:27 C 00 18 00.682 +01 47 40.91 X F52
2023-09-17 11:04:37 C 00 17 59.526 +01 47 31.53 X F52
2023-09-18 05:49:48 C 00 16 35.375 +01 35 07.58 V 703
2023-09-18 05:57:26 C 00 16 34.723 +01 35 02.65 V 703
2023-09-18 06:05:03 C 00 16 34.043 +01 34 57.58 V 703
2023-09-18 06:12:40 C 00 16 33.438 +01 34 52.57 V 703
2023-09-19 06:13:17 C 00 14 45.092 +01 19 10.02 V G96
2023-09-19 06:20:48 C 00 14 44.491 +01 19 05.16 V G96
2023-09-19 06:28:17 C 00 14 43.894 +01 19 00.30 V G96
2023-09-19 06:35:48 C 00 14 43.292 +01 18 55.33 V G96
2023-09-23 22:24:54 C 00 06 30.52 +00 07 45.4 X C95
2023-09-23 22:45:12 C 00 06 28.92 +00 07 32.9 X C95
2023-09-23 23:38:47 C 00 06 25.01 +00 07 01.0 Z Z28
2023-09-24 00:39:06 C 00 06 20.43 +00 06 23.7 Z Z28
2023-09-24 01:31:05 C 00 06 16.49 +00 05 52.3 Z Z28
2023-09-24 05:27:31 C 00 06 00.572 +00 03 28.69 V 703
2023-09-24 05:35:55 C 00 05 59.982 +00 03 24.55 V 703
2023-09-24 05:52:42 C 00 05 58.657 +00 03 14.22 V 703
2023-09-26 07:52:37 C 00 02 28.723 -00 26 49.67 V G96
2023-09-26 08:17:17 C 00 02 26.956 -00 27 04.28 V G96
2023-09-26 08:26:12 C 00 02 26.297 -00 27 09.68 V G96
2023-09-26 08:35:10 C 00 02 25.652 -00 27 14.90 V G96
2023-10-04 06:23:02 C 23 50 40.762 -02 08 10.00 V 703
2023-10-04 06:30:03 C 23 50 40.308 -02 08 11.87 V 703
2023-10-04 06:44:05 C 23 50 39.473 -02 08 20.04 V 703
2023-10-05 05:24:35 C 23 49 26.828 -02 18 46.33 V 703
2023-10-05 05:32:19 C 23 49 26.368 -02 18 50.08 V 703
2023-10-05 05:40:03 C 23 49 25.835 -02 18 53.53 V 703
2023-10-05 05:47:47 C 23 49 25.457 -02 18 56.70 V 703
2023-10-07 09:28:11 C 23 46 48.886 -02 41 18.23 X F52
2023-10-07 09:43:06 C 23 46 48.103 -02 41 24.53 X F52
2023-10-07 10:12:43 C 23 46 46.535 -02 41 36.72 X F52
2023-10-11 09:00:37 C 23 42 38.410 -03 17 26.02 X F51
2023-10-11 09:18:34 C 23 42 37.625 -03 17 32.16 X F51
2023-10-11 09:36:28 C 23 42 36.845 -03 17 38.24 X F51
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)