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
2025-09-03 10:01:35 C 23 13 34.370 +56 14 00.42 V T08
2025-09-03 10:05:33 C 23 13 33.929 +56 13 54.88 V T08
2025-09-03 10:13:30 C 23 13 33.014 +56 13 43.54 V T08
2025-09-03 10:54:44 C 23 13 28.327 +56 12 44.14 V T08
2025-09-03 22:33:04 B 23 12 18.806 +55 55 36.01 Z J51
2025-09-03 22:46:03 B 23 12 16.735 +55 55 16.28 V R61
2025-09-03 22:48:18 B 23 12 17.124 +55 55 14.27 Z J51
2025-09-03 22:53:56 B 23 12 16.054 +55 55 02.96 V R61
2025-09-03 23:00:42 B 23 12 15.053 +55 54 53.60 V R61
2025-09-03 23:03:31 B 23 12 15.422 +55 54 52.31 Z J51
2025-09-04 23:22:18 B 23 09 47.306 +55 18 03.13 V R61
2025-09-04 23:35:43 B 23 09 45.840 +55 17 42.58 V R61
2025-09-04 23:48:41 B 23 09 44.405 +55 17 22.74 V R61
2025-09-05 01:29:01 C 23 09 33.394 +55 14 41.53 Z C23
2025-09-05 01:32:28 C 23 09 33.002 +55 14 36.13 Z C23
2025-09-05 01:34:47 C 23 09 32.758 +55 14 32.46 Z C23
2025-09-05 02:10:40 C 23 09 28.932 +55 13 35.76 Z C23
2025-09-05 02:13:33 C 23 09 28.615 +55 13 30.65 Z C23
2025-09-05 03:54:21 C 23 09 18.053 +55 10 50.38 Z C23
2025-09-05 09:54:21 C 23 08 44.177 +55 01 43.61 V T08
2025-09-05 09:56:21 C 23 08 43.958 +55 01 40.58 V T08
2025-09-05 10:10:57 C 23 08 42.336 +55 01 17.58 V T08
2025-09-05 10:47:21 C 23 08 38.318 +55 00 19.98 V T08
2025-09-05 21:22:46 C 23 07 36.670 +54 43 12.50 Z C23
2025-09-05 22:03:29 C 23 07 32.393 +54 42 08.06 Z C23
2025-09-06 01:14:38 B 23 07 12.766 +54 37 09.95 X J51
2025-09-06 01:25:48 B 23 07 11.669 +54 36 51.84 X J51
2025-09-06 01:45:21 B 23 07 09.502 +54 36 19.80 X J51
2025-09-06 09:57:22 C 23 06 22.073 +54 22 59.16 V T08
2025-09-06 09:59:21 C 23 06 21.857 +54 22 55.63 V T08
2025-09-06 10:08:48 C 23 06 20.827 +54 22 40.22 V T08
2025-09-08 11:06:00 C 23 01 40.176 +52 58 41.45 V T05
2025-09-08 11:09:57 C 23 01 39.746 +52 58 34.54 V T05
2025-09-08 12:01:27 C 23 01 34.462 +52 57 01.30 V T05
2025-09-08 12:43:25 C 23 01 30.120 +52 55 44.47 V T05
2025-09-09 04:38:01 B 23 00 03.89 +52 26 49.0 Z W37
2025-09-09 05:08:07 B 23 00 00.93 +52 25 54.2 Z W37
2025-09-09 05:41:02 B 22 59 57.55 +52 24 52.9 Z W37
2025-09-09 09:43:58 C 22 59 36.113 +52 17 34.91 V T08
2025-09-09 09:45:57 C 22 59 35.916 +52 17 31.20 V T08
2025-09-09 09:49:56 C 22 59 35.474 +52 17 23.78 V T08
2025-09-09 09:57:16 C 22 59 34.730 +52 17 09.96 V T08
2025-09-09 20:39:20 C 22 58 37.733 +51 56 57.23 Z C23
2025-09-09 21:08:45 C 22 58 35.004 +51 56 02.22 Z C23
2025-09-09 21:35:39 C 22 58 32.390 +51 55 13.04 Z C23
2025-09-11 01:57:05 B 22 56 03.07 +51 00 42.4 Z W37
2025-09-11 02:46:19 B 22 55 58.48 +50 59 07.3 Z W37
2025-09-11 03:38:19 B 22 55 53.59 +50 57 26.5 Z W37
2025-09-11 09:51:12 C 22 55 20.981 +50 45 19.48 V T08
2025-09-11 10:39:17 C 22 55 16.356 +50 43 43.72 V T08