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
2017-12-26 05:26:21 C 05 18 03.11 +18 26 18.0 U G96
2017-12-26 05:33:45 C 05 18 02.42 +18 26 17.4 U G96
2019-11-28 15:00:44 C 12 43 37.42 -05 19 52.9 L 568
2019-11-28 15:17:00 C 12 43 39.66 -05 20 06.9 L 568
2019-11-28 15:18:20 C 12 43 39.83 -05 20 07.8 L 568
2019-11-28 15:33:10 C 12 43 41.84 -05 20 19.9 L 568
2019-11-28 15:34:31 C 12 43 42.02 -05 20 21.1 L 568
2020-10-14 07:25:43 C 03 50 35.80 +17 15 19.4 V G96
2020-10-14 07:35:09 C 03 50 35.36 +17 15 16.3 V G96
2020-10-14 07:42:30 C 03 50 35.03 +17 15 14.8 V G96
2020-10-14 07:49:52 C 03 50 34.67 +17 15 13.3 V G96
2020-10-15 14:10:33 C 03 49 11.193 +17 07 38.64 U F51
2020-10-15 14:28:47 C 03 49 10.287 +17 07 33.86 U F51
2020-10-15 14:46:59 C 03 49 09.372 +17 07 29.04 U F51
2020-10-20 13:39:31 C 03 42 53.294 +16 34 41.43 U F51
2020-10-20 13:57:08 C 03 42 52.212 +16 34 36.11 U F51
2020-10-20 14:14:50 C 03 42 51.135 +16 34 30.73 U F51
2020-10-23 10:10:26 C 03 38 42.40 +16 13 45.6 V G96
2020-10-23 10:17:45 C 03 38 41.90 +16 13 43.4 V G96
2020-10-23 10:25:02 C 03 38 41.41 +16 13 40.7 V G96
2020-10-25 13:12:26 C 03 35 21.046 +15 57 22.91 U F51
2020-10-25 13:32:05 C 03 35 19.674 +15 57 16.26 U F51
2020-10-25 14:11:19 C 03 35 16.885 +15 57 03.14 U F51
2020-11-05 10:17:18 C 03 15 54.05 +14 24 59.5 V G96
2020-11-05 10:24:47 C 03 15 53.39 +14 24 56.8 V G96
2020-11-05 10:32:13 C 03 15 52.83 +14 24 53.9 V G96
2020-11-05 10:39:38 C 03 15 52.17 +14 24 51.8 V G96
2020-11-10 15:52:57 C 03 05 56.19 +13 38 32.4 q D29
2020-11-10 16:13:19 C 03 05 54.46 +13 38 24.8 q D29
2020-11-13 11:53:48 C 03 00 35.705 +13 13 53.39 U F51
2020-11-13 12:12:35 C 03 00 34.185 +13 13 46.36 U F51
2020-11-13 12:31:26 C 03 00 32.699 +13 13 39.74 U F51
2020-11-14 05:55:20 C 02 59 12.71 +13 07 25.7 V G96
2020-11-14 06:02:46 C 02 59 12.15 +13 07 23.1 V G96
2020-11-14 06:10:13 C 02 59 11.50 +13 07 20.7 V G96
2020-11-14 06:17:40 C 02 59 10.89 +13 07 18.7 V G96
2020-11-16 07:34:38 C 02 55 26.503 +12 50 06.39 U F52
2020-11-16 07:50:28 C 02 55 25.303 +12 50 01.16 U F52
2020-11-16 08:06:19 C 02 55 24.035 +12 49 55.91 U F52
2023-02-28 06:36:10 C 15 42 38.36 -19 21 01.0 u 807
2023-02-28 06:57:02 C 15 42 42.71 -19 21 11.9 u 807
2023-05-30 14:09:21 C 23 05 01.475 -00 49 50.53 X F51
2023-05-30 14:24:07 C 23 05 03.171 -00 49 39.66 X F51
2023-05-30 14:31:28 C 23 05 04.021 -00 49 34.53 X F51
2023-06-24 10:20:02 C 00 06 52.549 +05 07 05.99 V G96
2023-06-24 10:26:49 C 00 06 53.075 +05 07 09.55 V G96
2023-06-24 10:33:35 C 00 06 53.716 +05 07 12.61 V G96
2023-06-24 10:40:21 C 00 06 54.256 +05 07 16.50 V G96
2023-07-27 13:04:09 C 00 56 04.243 +09 03 30.41 X F52
2023-07-27 13:19:41 C 00 56 04.655 +09 03 31.79 X F52
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)