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
2025-10-04 17:18:28 C 22 28 27.54 +27 06 53.3 X C40
2025-10-04 17:21:02 C 22 28 27.47 +27 06 46.1 X C40
2025-10-04 17:23:38 C 22 28 27.43 +27 06 39.4 X C40
2025-10-04 17:26:12 C 22 28 27.40 +27 06 32.2 X C40
2025-10-04 17:28:46 C 22 28 27.35 +27 06 25.3 X C40
2025-10-04 17:31:14 C 22 28 27.33 +27 06 18.5 X C40
2025-10-04 17:33:36 C 22 28 27.28 +27 06 12.2 X C40
2025-10-04 17:35:57 C 22 28 27.25 +27 06 05.8 X C40
2025-10-04 17:38:18 C 22 28 27.22 +27 05 59.4 X C40
2025-10-04 19:51:05 C 22 28 25.361 +27 00 04.36 V 088
2025-10-04 19:53:11 C 22 28 25.325 +26 59 58.81 V 088
2025-10-04 19:55:18 C 22 28 25.301 +26 59 53.38 V 088
2025-10-04 19:57:24 C 22 28 25.246 +26 59 48.41 V 088
2025-10-04 19:59:59 C 22 28 25.236 +26 59 39.59 V 088
2025-10-04 20:02:36 C 22 28 25.176 +26 59 32.50 V 088
2025-10-04 20:05:13 C 22 28 25.087 +26 59 26.38 V 088
2025-10-04 20:11:25 C 22 28 25.042 +26 59 08.30 V 088
2025-10-04 20:14:32 C 22 28 24.955 +26 59 00.71 V 088
2025-10-05 08:27:42 C 22 28 18.600 +26 25 48.76 V T05
2025-10-05 08:32:57 C 22 28 18.540 +26 25 34.50 V T05
2025-10-05 08:42:01 C 22 28 18.391 +26 25 09.84 V T05
2025-10-05 08:51:27 C 22 28 18.274 +26 24 43.85 V T05
2025-10-05 08:56:43 C 22 28 18.173 +26 24 29.84 V T05
2025-10-05 17:39:18 C 22 28 15.10 +26 00 42.6 X C40
2025-10-05 17:41:14 C 22 28 15.07 +26 00 37.4 X C40
2025-10-05 17:43:10 C 22 28 15.06 +26 00 32.2 X C40
2025-10-05 17:45:06 C 22 28 15.03 +26 00 27.1 X C40
2025-10-05 17:46:56 C 22 28 15.00 +26 00 22.1 X C40
2025-10-05 17:48:39 C 22 28 14.99 +26 00 17.5 X C40
2025-10-05 17:50:21 C 22 28 14.96 +26 00 12.9 X C40
2025-10-05 17:52:04 C 22 28 14.95 +26 00 08.2 X C40
2025-10-05 17:53:48 C 22 28 14.92 +26 00 03.6 X C40
2025-10-05 17:55:32 C 22 28 14.90 +25 59 58.9 X C40
2025-10-05 17:57:14 C 22 28 14.88 +25 59 54.3 X C40
2025-10-05 17:58:58 C 22 28 14.86 +25 59 49.6 X C40
2025-10-05 20:20:55 B 22 28 13.12 +25 53 24.5 X L76
2025-10-05 20:36:32 B 22 28 12.94 +25 52 41.9 X L76
2025-10-05 20:52:09 B 22 28 12.81 +25 51 59.3 X L76
2025-10-06 08:38:52 C 22 28 08.916 +25 20 24.22 V T05
2025-10-06 08:42:54 C 22 28 08.873 +25 20 13.13 V T05
2025-10-06 08:50:46 C 22 28 08.777 +25 19 52.14 V T05
2025-10-06 09:07:09 C 22 28 08.585 +25 19 07.54 V T05
2025-10-06 17:57:08 B 22 28 06.93 +24 55 13.4 X L76
2025-10-06 18:03:23 B 22 28 06.86 +24 54 56.4 X L76
2025-10-06 18:09:38 B 22 28 06.83 +24 54 40.0 X L76
2025-10-06 18:15:52 B 22 28 06.78 +24 54 23.1 X L76
2025-10-06 18:22:07 B 22 28 06.73 +24 54 06.1 X L76
2025-10-06 18:28:21 B 22 28 06.61 +24 53 49.5 X L76
2025-10-06 18:34:36 B 22 28 06.60 +24 53 33.0 X L76
2025-10-06 18:40:51 B 22 28 06.54 +24 53 16.3 X L76