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
2012-09-16 19:26:20 C 20 05 56.47 +36 23 03.5 u 160
2012-09-20 16:53:05 C 20 14 26.39 +32 20 02.3 r 168
2012-09-20 18:06:35 C 20 14 32.78 +32 16 51.4 r 168
2012-09-20 18:07:50 C 20 14 32.90 +32 16 48.0 r 168
2012-09-20 20:32:30 C 20 14 45.53 +32 10 32.5 r 168
2012-09-21 20:55:38 C 20 16 59.33 +31 08 02.6 o J16
2012-09-21 21:06:24 C 20 17 00.26 +31 07 35.1 o J16
2012-09-21 21:17:02 C 20 17 01.15 +31 07 07.5 o J16
2012-09-21 21:27:21 C 20 17 02.07 +31 06 41.2 o J16
2012-09-30 04:32:36 C 20 35 05.76 +22 57 26.8 v H21
2012-09-30 04:38:31 C 20 35 06.27 +22 57 13.5 v H21
2012-09-30 04:44:26 C 20 35 06.78 +22 56 59.2 v H21
2012-09-30 04:49:42 C 20 35 07.25 +22 56 46.8 v H21
2012-10-01 19:49:09 C 20 38 40.37 +21 26 53.2 c A24
2012-10-01 19:50:12 C 20 38 40.45 +21 26 50.8 c A24
2012-10-05 19:01:47 C 20 47 19.83 +17 57 26.1 c A24
2012-10-05 20:09:27 C 20 47 25.73 +17 55 01.8 c A24
2012-10-07 19:06:47 C 20 51 42.51 +16 17 26.9 c A24
2012-10-07 19:07:49 C 20 51 42.58 +16 17 25.6 c A24
2012-10-07 20:18:14 C 20 51 48.70 +16 15 02.0 c A24
2012-10-07 20:19:16 C 20 51 48.79 +16 14 59.8 c A24
2012-10-09 19:09:07 C 20 56 05.28 +14 41 40.7 c A24
2012-10-09 19:10:09 C 20 56 05.37 +14 41 39.1 c A24
2012-10-09 20:18:12 C 20 56 11.40 +14 39 25.5 c A24
2012-10-13 19:20:02 C 21 04 52.77 +11 42 35.8 o 071
2012-10-13 19:21:32 C 21 04 52.93 +11 42 32.9 o 071
2012-10-13 19:23:04 C 21 04 53.02 +11 42 30.8 o 071
2012-10-13 19:24:35 C 21 04 53.16 +11 42 27.8 o 071
2012-10-13 19:26:05 C 21 04 53.27 +11 42 25.5 o 071
2012-10-13 19:27:36 C 21 04 53.44 +11 42 22.2 o 071
2012-10-13 19:29:08 C 21 04 53.58 +11 42 20.1 o 071
2012-10-16 23:42:34 C 21 11 54.11 +09 32 37.1 u I15
2012-10-16 23:46:47 C 21 11 54.44 +09 32 30.2 u I15
2012-10-16 23:51:01 C 21 11 54.86 +09 32 22.9 u I15
2012-10-18 04:13:03 C 21 14 31.09 +08 46 54.4 r 703
2012-10-18 04:17:50 C 21 14 31.52 +08 46 46.7 r 703
2012-10-18 04:22:42 C 21 14 31.95 +08 46 39.9 r 703
2012-10-18 04:27:32 C 21 14 32.38 +08 46 31.4 r 703
2012-11-25 02:58:37 C 22 39 20.62 -04 39 08.2 r 703
2012-11-25 03:07:20 C 22 39 21.52 -04 39 11.5 r 703
2012-11-25 03:16:05 C 22 39 22.35 -04 39 13.2 r 703
2012-11-25 03:24:50 C 22 39 23.14 -04 39 16.9 r 703
2012-12-05 01:16:46 C 23 01 42.63 -05 40 00.0 19.4 c 704
2012-12-05 01:35:49 C 23 01 44.36 -05 40 04.3 19.3 c 704
2012-12-05 01:55:07 C 23 01 46.17 -05 40 07.4 18.9 c 704
2012-12-05 02:13:56 C 23 01 47.89 -05 40 11.4 19.2 c 704
2013-01-08 05:16:02 C 00 19 31.572 -05 06 38.18 L F51
2013-01-08 05:21:45 C 00 19 32.113 -05 06 36.99 L F51
2013-01-08 05:27:25 C 00 19 32.648 -05 06 35.84 L F51
2013-01-08 05:33:06 C 00 19 33.187 -05 06 34.74 L F51