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
2012-08-25 21:22:39 C 19 14 18.11 +58 06 53.4 u B38
2012-08-25 21:26:47 C 19 14 18.54 +58 06 44.3 u B38
2012-08-25 21:31:17 C 19 14 19.01 +58 06 34.3 u B38
2012-08-27 02:15:50 C 19 17 32.05 +57 02 34.9 u I15
2012-08-27 02:18:04 C 19 17 32.29 +57 02 29.9 u I15
2012-08-27 02:20:17 C 19 17 32.52 +57 02 24.8 u I15
2012-08-27 20:42:22 C 19 19 33.32 +56 20 55.1 u 160
2012-08-27 20:45:42 C 19 19 33.63 +56 20 47.3 u 160
2012-08-27 20:48:35 C 19 19 33.93 +56 20 40.9 u 160
2012-08-27 21:22:56 C 19 19 37.43 +56 19 21.7 c A24
2012-08-27 21:23:58 C 19 19 37.54 +56 19 19.5 c A24
2012-08-27 22:35:25 C 19 19 44.71 +56 16 35.0 c A24
2012-08-27 22:36:27 C 19 19 44.80 +56 16 32.9 c A24
2012-08-28 04:49:24 C 19 20 25.86 +56 02 31.2 16.8 c 704
2012-08-28 05:07:04 C 19 20 27.60 +56 01 50.5 16.8 c 704
2012-08-28 05:24:44 C 19 20 29.33 +56 01 09.7 17.1 c 704
2012-08-28 05:42:27 C 19 20 31.05 +56 00 29.1 17.0 c 704
2012-08-28 20:01:57 C 19 22 04.57 +55 27 36.4 c A24
2012-08-28 20:02:59 C 19 22 04.68 +55 27 33.7 c A24
2012-08-28 21:12:56 C 19 22 11.43 +55 24 52.8 u 160
2012-08-28 21:13:01 C 19 22 11.56 +55 24 52.0 c A24
2012-08-28 21:14:03 C 19 22 11.63 +55 24 49.8 c A24
2012-08-28 21:14:27 C 19 22 11.57 +55 24 49.4 u 160
2012-08-28 21:15:58 C 19 22 11.74 +55 24 45.7 u 160
2012-08-30 02:39:21 C 19 25 18.60 +54 16 37.3 u H21
2012-08-30 02:43:18 C 19 25 18.96 +54 16 27.9 u H21
2012-08-30 02:46:50 C 19 25 19.30 +54 16 19.8 u H21
2012-08-30 02:49:55 C 19 25 19.60 +54 16 12.3 u H21
2012-08-30 02:56:31 C 19 25 20.23 +54 15 57.0 u H21
2012-08-30 02:59:10 C 19 25 20.47 +54 15 50.8 u H21
2012-08-31 00:06:52 C 19 27 32.99 +53 26 07.7 u I15
2012-08-31 00:13:12 C 19 27 33.60 +53 25 52.9 u I15
2012-08-31 00:17:26 C 19 27 33.99 +53 25 42.8 u I15
2012-08-31 02:05:35 C 19 27 44.75 +53 21 28.4 u H21
2012-08-31 02:08:48 C 19 27 45.07 +53 21 21.2 u H21
2012-08-31 02:12:01 C 19 27 45.39 +53 21 13.4 u H21
2012-08-31 02:15:35 C 19 27 45.74 +53 21 05.1 u H21
2012-08-31 02:18:47 C 19 27 46.03 +53 20 57.4 u H21
2012-09-06 20:26:00 C 19 43 45.88 +46 42 57.9 C91
2012-09-06 20:37:59 C 19 43 47.05 +46 42 26.4 C91
2012-09-08 19:32:40 C 19 48 13.90 +44 42 48.4 u 160
2012-09-08 19:36:53 C 19 48 14.26 +44 42 37.6 u 160
2012-09-08 19:39:45 C 19 48 14.51 +44 42 30.2 u 160
2012-09-09 20:13:07 C 19 50 32.45 +43 39 16.1 c A24
2012-09-09 20:14:10 C 19 50 32.49 +43 39 13.5 c A24
2012-09-13 19:04:59 C 19 59 18.91 +39 32 25.5 u 089
2012-09-13 19:07:08 C 19 59 19.08 +39 32 20.0 u 089
2012-09-13 19:13:35 C 19 59 19.68 +39 32 03.0 u 089
2012-09-16 19:19:13 C 20 05 55.82 +36 23 21.5 u 160
2012-09-16 19:22:03 C 20 05 56.09 +36 23 14.2 u 160