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
2025-11-08 01:50:30 C 22 51 40.044 +00 04 57.50 V W68
2025-11-08 02:33:35 C 22 51 42.259 +00 04 09.73 V W68
2025-11-09 04:18:44 C 22 53 08.855 -00 23 50.86 V 703
2025-11-09 04:22:04 C 22 53 09.035 -00 23 53.88 V 703
2025-11-09 04:28:42 C 22 53 09.416 -00 24 02.81 V 703
2025-11-09 20:49:37 C 22 54 05.443 -00 41 00.60 V R17
2025-11-09 21:09:59 C 22 54 06.542 -00 41 21.30 V R17
2025-11-09 21:30:21 C 22 54 07.632 -00 41 42.18 V R17
2025-11-09 21:50:43 C 22 54 08.710 -00 42 02.99 V R17
2025-11-10 03:45:03 C 22 54 29.135 -00 48 04.43 V 703
2025-11-10 03:51:41 C 22 54 29.430 -00 48 11.34 V 703
2025-11-10 03:55:00 C 22 54 29.621 -00 48 14.15 V 703
2025-11-10 18:20:56 B 22 55 20.146 -01 02 43.58 V R61
2025-11-10 18:27:08 B 22 55 20.458 -01 02 49.63 V R61
2025-11-10 18:32:55 B 22 55 20.765 -01 02 55.28 V R61
2025-11-10 20:45:20 C 22 55 28.234 -01 05 03.34 V R17
2025-11-10 21:05:43 C 22 55 29.335 -01 05 23.17 V R17
2025-11-10 21:26:05 C 22 55 30.451 -01 05 43.15 V R17
2025-11-10 21:46:28 C 22 55 31.550 -01 06 03.31 V R17
2025-11-11 04:09:22 C 22 55 53.850 -01 12 18.04 V 703
2025-11-11 04:12:38 C 22 55 54.062 -01 12 21.35 V 703
2025-11-11 04:15:54 C 22 55 54.235 -01 12 25.74 V 703
2025-11-11 04:19:10 C 22 55 54.336 -01 12 29.63 V 703
2025-11-11 18:59:17 C 22 56 46.193 -01 26 16.37 V M22
2025-11-11 19:03:50 C 22 56 46.452 -01 26 20.76 V M22
2025-11-11 19:13:01 C 22 56 46.982 -01 26 29.29 V M22
2025-11-11 19:44:15 C 22 56 48.698 -01 26 58.85 V M22
2025-11-13 01:10:07 C 22 58 34.094 -01 54 07.96 V W68
2025-11-13 01:22:03 C 22 58 34.783 -01 54 18.79 V W68
2025-11-13 02:02:06 C 22 58 37.042 -01 54 54.61 V W68
2025-11-13 02:16:00 C 22 58 37.836 -01 55 07.28 V W68
2025-11-13 02:52:11 C 22 58 39.914 -01 55 39.40 V W68
2025-11-13 03:22:38 C 22 58 41.659 -01 56 06.72 V W68
2025-11-14 01:20:31 C 23 00 02.004 -02 15 23.11 V W68
2025-11-14 01:26:35 C 23 00 02.321 -02 15 28.51 V W68
2025-11-14 01:34:32 C 23 00 02.808 -02 15 36.14 V W68
2025-11-14 01:49:58 C 23 00 03.634 -02 15 47.77 V W68
2025-11-15 03:12:58 C 23 01 37.744 -02 37 22.37 V 703
2025-11-15 03:16:14 C 23 01 37.952 -02 37 24.71 V 703
2025-11-15 03:19:29 C 23 01 38.089 -02 37 27.95 V 703
2025-11-15 03:22:45 C 23 01 38.327 -02 37 30.11 V 703
2025-11-15 20:51:02 C 23 02 43.685 -02 51 36.11 V R17
2025-11-15 21:11:25 C 23 02 44.909 -02 51 51.95 V R17
2025-11-15 21:31:47 C 23 02 46.097 -02 52 08.18 V R17
2025-11-15 21:52:09 C 23 02 47.302 -02 52 24.10 V R17
2025-11-16 20:46:53 C 23 04 14.251 -03 10 10.99 V R17
2025-11-16 21:07:16 C 23 04 15.480 -03 10 26.04 V R17
2025-11-16 21:27:39 C 23 04 16.687 -03 10 41.59 V R17
2025-11-16 21:48:01 C 23 04 17.923 -03 10 56.89 V R17
2025-11-17 18:39:03 C 23 05 37.961 -03 26 11.51 V M22