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
2011-10-15 23:09:19 C 00 30 43.85 +21 03 40.3 u C01
2011-10-16 18:54:55 C 00 29 11.56 +20 13 08.7 u C39
2011-10-16 19:14:34 C 00 29 09.97 +20 12 18.9 u C39
2011-10-16 19:34:53 C 00 29 08.31 +20 11 27.3 u C39
2011-10-16 19:53:49 C 00 29 06.77 +20 10 40.9 c 127
2011-10-16 19:58:22 C 00 29 06.39 +20 10 29.1 c 127
2011-10-16 20:04:01 C 00 29 05.93 +20 10 14.7 c 127
2011-10-16 20:15:43 C 00 29 04.98 +20 09 45.1 c 127
2011-10-20 13:17:36 C 00 22 38.49 +16 24 04.7 o 300
2011-10-20 13:20:03 C 00 22 38.30 +16 23 58.5 o 300
2011-10-20 13:22:30 C 00 22 38.20 +16 23 51.8 o 300
2011-10-20 13:27:25 C 00 22 37.77 +16 23 39.9 o 300
2011-10-20 13:32:20 C 00 22 37.43 +16 23 27.9 o 300
2011-10-21 20:04:00 C 00 20 39.20 +15 07 22.9 c 127
2011-10-21 20:09:05 C 00 20 38.87 +15 07 10.5 c 127
2011-10-21 20:19:59 C 00 20 38.15 +15 06 43.5 c 127
2011-10-21 20:25:53 C 00 20 37.76 +15 06 28.8 c 127
2011-10-23 19:58:47 C 00 17 47.64 +13 10 30.2 c 127
2011-10-23 20:04:18 C 00 17 47.31 +13 10 17.2 c 127
2011-10-23 20:18:04 C 00 17 46.49 +13 09 44.1 c 127
2011-10-23 20:24:56 C 00 17 46.06 +13 09 27.8 c 127
2011-10-26 19:02:19 C 00 14 07.05 +10 24 00.6 u A13
2011-10-26 19:38:23 C 00 14 05.26 +10 22 43.6 u A13
2011-10-27 20:38:52 C 00 12 57.28 +09 26 24.1 o J16
2011-10-27 20:48:43 C 00 12 56.82 +09 26 02.6 o J16
2011-10-27 20:59:28 C 00 12 56.28 +09 25 38.4 o J16
2011-10-27 21:10:03 C 00 12 55.78 +09 25 14.7 o J16
2011-10-28 11:19:48 C 00 12 19.81 +08 54 05.4 m 355
2011-10-28 11:22:56 C 00 12 19.69 +08 53 57.8 m 355
2011-10-28 11:26:01 C 00 12 19.54 +08 53 51.8 m 355
2011-10-28 11:27:04 C 00 12 19.48 +08 53 49.4 m 355
2011-10-28 14:15:33 C 00 12 11.66 +08 47 40.7 u 379
2011-10-28 14:23:53 C 00 12 11.25 +08 47 22.3 u 379
2011-10-28 14:34:54 C 00 12 10.79 +08 46 58.2 u 379
2011-10-28 14:40:13 C 00 12 10.52 +08 46 46.5 u 379
2011-11-01 21:41:43 C 00 08 39.21 +05 13 51.9 u C01
2011-11-01 21:43:05 C 00 08 39.18 +05 13 49.3 u C01
2011-11-01 21:44:29 C 00 08 39.13 +05 13 46.6 u C01
2011-11-01 21:45:53 C 00 08 39.09 +05 13 43.7 u C01
2011-11-01 21:47:17 C 00 08 39.05 +05 13 41.1 u C01
2011-11-01 23:07:26 C 00 08 36.57 +05 11 05.4 u C01
2011-11-01 23:08:49 C 00 08 36.53 +05 11 02.7 u C01
2011-11-01 23:10:13 C 00 08 36.49 +05 11 00.0 u C01
2011-11-01 23:11:36 C 00 08 36.44 +05 10 57.2 u C01
2011-11-01 23:12:59 C 00 08 36.40 +05 10 54.6 u C01
2011-11-14 19:50:09 C 00 05 48.41 -02 51 58.6 u 160
2011-11-14 19:54:50 C 00 05 48.44 -02 52 04.3 u 160
2011-11-14 19:58:40 C 00 05 48.43 -02 52 09.4 u 160
2011-11-15 20:11:47 C 00 06 00.79 -03 20 45.5 u 160
2011-11-15 20:15:50 C 00 06 00.81 -03 20 49.7 u 160