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
2011-09-13 22:28:04 C 01 40 46.25 +44 27 54.8 u 160
2011-09-13 22:31:28 C 01 40 46.00 +44 27 52.0 u 160
2011-09-13 22:34:55 C 01 40 45.75 +44 27 49.2 u 160
2011-09-21 01:32:57 C 01 27 30.81 +41 28 35.7 r 130
2011-09-21 01:34:24 C 01 27 30.67 +41 28 34.0 r 130
2011-09-21 01:35:50 C 01 27 30.53 +41 28 32.0 r 130
2011-09-21 01:37:17 C 01 27 30.41 +41 28 30.4 r 130
2011-09-24 06:36:37 C 01 20 31.63 +39 42 33.0 r 703
2011-09-24 06:47:08 C 01 20 30.55 +39 42 17.5 r 703
2011-09-24 06:57:39 C 01 20 29.47 +39 42 02.1 r 703
2011-09-24 07:08:17 C 01 20 28.39 +39 41 46.5 r 703
2011-09-30 01:41:51 C 01 06 50.02 +35 47 10.7 o C60
2011-09-30 01:43:41 C 01 06 49.83 +35 47 07.8 o C60
2011-09-30 01:45:31 C 01 06 49.62 +35 47 03.6 o C60
2011-09-30 01:46:25 C 01 06 49.54 +35 47 02.1 o C60
2011-09-30 01:47:21 C 01 06 49.46 +35 47 00.5 o C60
2011-09-30 01:48:15 C 01 06 49.36 +35 46 58.6 o C60
2011-09-30 01:49:10 C 01 06 49.24 +35 46 56.5 o C60
2011-10-03 00:16:19 C 00 59 41.79 +33 26 34.8 r J27
2011-10-03 00:27:53 C 00 59 40.54 +33 26 10.4 r J27
2011-10-03 00:47:41 C 00 59 38.41 +33 25 29.2 r J27
2011-10-03 19:51:40 C 00 57 43.73 +32 45 05.2 u C73
2011-10-03 19:53:54 C 00 57 43.51 +32 45 00.6 u C73
2011-10-03 19:55:56 C 00 57 43.31 +32 44 56.4 u C73
2011-10-03 19:56:42 C 00 57 43.21 +32 44 54.7 u C73
2011-10-03 19:58:44 C 00 57 42.99 +32 44 50.3 u C73
2011-10-03 20:00:50 C 00 57 42.79 +32 44 45.8 u C73
2011-10-03 20:01:39 C 00 57 42.69 +32 44 44.3 u C73
2011-10-03 20:03:36 C 00 57 42.47 +32 44 40.1 u C73
2011-10-03 20:05:33 C 00 57 42.25 +32 44 36.1 u C73
2011-10-03 22:01:45 C 00 57 30.31 +32 40 28.5 u 160
2011-10-03 22:03:58 C 00 57 30.07 +32 40 23.7 u 160
2011-10-03 22:06:12 C 00 57 29.74 +32 40 19.4 u 160
2011-10-06 18:27:25 C 00 50 41.29 +30 08 03.3 u C73
2011-10-06 18:31:34 C 00 50 40.84 +30 07 53.4 u C73
2011-10-06 18:36:30 C 00 50 40.41 +30 07 43.3 u C73
2011-10-15 20:52:11 C 00 30 55.49 +21 09 30.7 u C01
2011-10-15 20:53:05 C 00 30 55.41 +21 09 28.5 u C01
2011-10-15 20:53:57 C 00 30 55.34 +21 09 26.2 u C01
2011-10-15 20:54:49 C 00 30 55.27 +21 09 24.0 u C01
2011-10-15 20:55:44 C 00 30 55.19 +21 09 21.7 u C01
2011-10-15 21:51:59 C 00 30 50.41 +21 06 58.3 u C01
2011-10-15 21:52:52 C 00 30 50.33 +21 06 55.9 u C01
2011-10-15 21:53:46 C 00 30 50.26 +21 06 53.6 u C01
2011-10-15 21:54:39 C 00 30 50.18 +21 06 51.3 u C01
2011-10-15 21:55:31 C 00 30 50.11 +21 06 49.2 u C01
2011-10-15 23:05:45 C 00 30 44.15 +21 03 49.5 u C01
2011-10-15 23:06:38 C 00 30 44.08 +21 03 47.1 u C01
2011-10-15 23:07:33 C 00 30 44.00 +21 03 45.0 u C01
2011-10-15 23:08:26 C 00 30 43.91 +21 03 42.7 u C01