219071 (1997 US9)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2820711429 ± 6.63e-09
Semi-major axis (a)1.0527884824 AU ± 1.46e-10
Inclination (i)20.01820269° ± 6.53e-07
Long. of Asc. Node (Ω)212.18222472° ± 1.22e-06
Arg. of Perihelion (ω)357.39208828° ± 1.90e-06
Mean Anomaly (M)182.27746302° ± 1.78e-06
Mean Motion (n)0.9124321690°/day ± 1.90e-10
Perihelion dist (q)0.75582723 AU ± 6.98e-09
Aphelion dist (Q)1.34974973 AU ± 6.98e-09
Orbital Period1.08021869 yr ± 2.25e-10
Physical Parameters
H (abs. magnitude)17.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.078″
Uncertainty0
Orbit TypeApollo
MOID0.249406 AU
Observations Used2715
Gaia Obs Used144
Oppositions1
Arc Total1997-2015
First Observation Used1997-10-19
Last Observation Used2025-12-13
Observations (2988)
Date Type RA Dec Mag Band Observatory
2024-10-05 08:35:30 C 02 50 01.050 +28 38 19.28 V 703
2024-10-05 08:38:46 C 02 50 00.755 +28 38 14.17 V 703
2024-10-05 08:42:02 C 02 50 00.524 +28 38 09.64 V 703
2024-10-06 07:29:10 C 02 48 22.680 +28 03 02.27 V 703
2024-10-06 07:32:28 C 02 48 22.388 +28 02 57.80 V 703
2024-10-06 07:35:44 C 02 48 22.129 +28 02 52.55 V 703
2024-10-06 07:39:02 C 02 48 21.863 +28 02 46.97 V 703
2024-10-06 10:51:45 C 02 48 07.666 +27 57 48.82 V T05
2024-10-06 10:56:02 C 02 48 07.322 +27 57 42.19 V T05
2024-10-06 11:03:12 C 02 48 06.749 +27 57 30.85 V T05
2024-10-06 11:10:22 C 02 48 06.149 +27 57 20.05 V T05
2024-10-06 11:11:01 C 02 48 06.115 +27 57 18.58 V T05
2024-10-06 11:12:58 C 02 48 05.945 +27 57 15.62 V T05
2024-10-07 08:26:53 C 02 46 29.960 +27 23 08.45 V 703
2024-10-07 08:30:09 C 02 46 29.687 +27 23 03.19 V 703
2024-10-07 08:33:25 C 02 46 29.413 +27 22 57.79 V 703
2024-10-07 08:36:41 C 02 46 29.150 +27 22 52.54 V 703
2024-10-07 09:40:50 C 02 46 24.977 +27 21 10.51 V T05
2024-10-07 09:47:28 C 02 46 24.422 +27 20 59.93 V T05
2024-10-07 10:35:30 C 02 46 20.460 +27 19 42.53 V T05
2024-10-08 07:41:14 C 02 44 41.424 +26 44 35.38 V 703
2024-10-08 07:44:31 C 02 44 41.136 +26 44 30.08 V 703
2024-10-08 07:47:47 C 02 44 40.855 +26 44 24.68 V 703
2024-10-08 07:51:03 C 02 44 40.592 +26 44 18.89 V 703
2024-10-09 10:09:54 C 02 42 32.942 +25 59 08.05 V T08
2024-10-09 10:13:14 C 02 42 32.654 +25 59 02.44 V T08
2024-10-09 10:19:10 C 02 42 32.126 +25 58 52.14 V T08
2024-10-09 10:28:35 C 02 42 31.277 +25 58 35.65 V T08
2024-10-10 10:10:07 C 02 40 32.126 +25 16 21.97 V T05
2024-10-10 10:12:52 C 02 40 31.870 +25 16 17.11 V T05
2024-10-10 10:17:25 C 02 40 31.452 +25 16 08.90 V T05
2024-10-10 10:58:09 C 02 40 27.720 +25 14 55.32 V T05
2024-10-11 10:02:53 C 02 38 27.107 +24 32 21.84 V G96
2024-10-11 10:10:16 C 02 38 26.419 +24 32 07.98 V G96
2024-10-11 10:17:39 C 02 38 25.728 +24 31 54.05 V G96
2024-10-11 10:25:03 C 02 38 25.033 +24 31 40.15 V G96
2024-10-11 12:28:45 C 02 38 14.467 +24 27 54.18 V T05
2024-10-11 12:34:11 C 02 38 13.987 +24 27 43.60 V T05
2024-10-11 12:42:53 C 02 38 13.145 +24 27 27.29 V T05
2024-10-11 13:04:49 C 02 38 11.069 +24 26 45.89 V T05
2024-10-12 07:52:12 C 02 36 31.637 +23 51 02.45 V 703
2024-10-12 07:55:29 C 02 36 31.334 +23 50 56.22 V 703
2024-10-12 07:58:46 C 02 36 31.021 +23 50 49.96 V 703
2024-10-12 08:02:03 C 02 36 30.697 +23 50 43.73 V 703
2024-10-13 07:05:52 C 02 34 25.216 +23 05 49.52 V 703
2024-10-13 07:09:11 C 02 34 24.881 +23 05 43.08 V 703
2024-10-13 07:12:29 C 02 34 24.560 +23 05 36.71 V 703
2024-10-13 07:15:48 C 02 34 24.233 +23 05 30.16 V 703
2024-10-14 07:58:23 C 02 32 06.036 +22 16 03.68 V 703
2024-10-14 08:01:37 C 02 32 05.723 +22 15 56.99 V 703