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
2011-11-15 20:20:22 C 00 06 00.85 -03 20 54.9 u 160
2011-11-16 03:37:35 C 00 06 05.40 -03 29 13.9 r 703
2011-11-16 03:44:47 C 00 06 05.47 -03 29 22.4 r 703
2011-11-16 03:52:06 C 00 06 05.50 -03 29 31.1 r 703
2011-11-16 03:59:31 C 00 06 05.54 -03 29 39.6 r 703
2011-11-16 21:27:55 C 00 06 16.97 -03 49 17.6 u 160
2011-11-16 21:31:54 C 00 06 17.01 -03 49 22.2 u 160
2011-11-16 21:35:53 C 00 06 17.03 -03 49 26.5 u 160
2011-11-17 20:34:19 C 00 06 35.28 -04 14 14.8 u 160
2011-11-17 20:38:16 C 00 06 35.32 -04 14 18.8 u 160
2011-11-17 20:42:29 C 00 06 35.37 -04 14 23.6 u 160
2011-11-18 04:54:51 C 00 06 42.38 -04 22 56.5 18.2 c 704
2011-11-18 05:13:10 C 00 06 42.58 -04 23 15.8 18.6 c 704
2011-11-18 05:31:36 C 00 06 42.81 -04 23 34.6 18.4 c 704
2011-11-18 05:49:49 C 00 06 43.00 -04 23 53.5 18.5 c 704
2011-11-18 06:08:18 C 00 06 43.23 -04 24 12.7 18.4 c 704
2011-11-18 20:53:30 C 00 06 57.32 -04 39 21.7 u 160
2011-11-18 20:57:12 C 00 06 57.38 -04 39 25.5 u 160
2011-11-18 21:01:03 C 00 06 57.45 -04 39 29.2 u 160
2011-11-19 20:06:49 C 00 07 21.52 -05 02 16.0 u 160
2011-11-19 20:10:58 C 00 07 21.56 -05 02 20.4 u 160
2011-11-19 20:15:02 C 00 07 21.65 -05 02 23.9 u 160
2011-11-28 02:01:57 C 00 12 31.55 -07 38 54.2 18.5 c 704
2011-11-28 02:20:45 C 00 12 32.04 -07 39 06.1 18.7 c 704
2011-11-28 02:58:23 C 00 12 33.30 -07 39 31.7 19.3 c 704
2011-11-28 03:17:12 C 00 12 33.81 -07 39 42.0 19.0 c 704
2012-01-04 02:43:51 C 01 01 53.43 -10 23 18.1 r 703
2012-01-04 02:51:01 C 01 01 53.97 -10 23 16.7 r 703
2012-01-04 02:58:19 C 01 01 54.58 -10 23 15.9 r 703
2012-01-04 03:05:48 C 01 01 55.09 -10 23 15.6 r 703
2012-07-12 21:20:14 C 12 20 55.02 +78 51 51.4 c A24
2012-07-12 21:21:17 C 12 20 55.70 +78 51 52.3 c A24
2012-07-12 21:22:20 C 12 20 56.42 +78 51 53.1 c A24
2012-07-12 21:23:22 C 12 20 57.16 +78 51 54.3 c A24
2012-07-16 20:51:54 C 13 33 41.32 +79 59 02.0 c A24
2012-07-16 20:52:56 C 13 33 42.15 +79 59 02.3 c A24
2012-07-16 21:59:55 C 13 34 35.32 +79 59 21.9 c A24
2012-07-16 22:00:59 C 13 34 35.86 +79 59 22.0 c A24
2012-07-17 20:45:13 C 13 52 58.46 +80 05 33.7 c A24
2012-07-17 20:46:15 C 13 52 59.27 +80 05 33.9 c A24
2012-07-17 21:07:36 C 13 53 16.14 +80 05 36.3 c A24
2012-07-17 21:29:58 C 13 53 33.73 +80 05 39.0 c A24
2012-07-17 21:51:18 C 13 53 50.97 +80 05 41.9 c A24
2012-07-17 21:52:20 C 13 53 51.61 +80 05 41.8 c A24
2012-07-18 20:34:15 C 14 12 12.14 +80 07 58.5 c A24
2012-07-18 20:35:17 C 14 12 12.94 +80 07 58.2 c A24
2012-07-18 21:42:24 C 14 13 05.65 +80 07 55.3 c A24
2012-07-18 21:43:26 C 14 13 06.40 +80 07 55.3 c A24
2012-07-19 21:23:09 C 14 31 57.62 +80 06 12.9 c A24
2012-07-19 21:24:12 C 14 31 58.28 +80 06 12.5 c A24