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
2023-12-31 16:31:51 S 03 27 55.46 -42 26 05.5 L C51
2023-12-31 19:37:47 S 03 27 39.50 -42 27 26.3 L C51
2024-01-03 02:29:31 C 03 23 06.122 -42 48 48.92 V W68
2024-01-03 02:33:51 C 03 23 05.731 -42 48 50.26 V W68
2024-01-03 02:42:14 C 03 23 05.016 -42 48 53.17 V W68
2024-01-03 02:57:47 C 03 23 03.667 -42 48 58.36 V W68
2024-01-04 20:19:13 C 03 19 51.185 -43 02 22.63 V M22
2024-01-04 20:23:53 C 03 19 50.815 -43 02 23.89 V M22
2024-01-04 20:31:51 C 03 19 50.153 -43 02 26.09 V M22
2024-01-04 20:46:10 C 03 19 48.979 -43 02 29.87 V M22
2024-01-07 02:23:12 C 03 15 55.546 -43 16 53.94 V W68
2024-01-07 02:30:07 C 03 15 54.996 -43 16 55.20 V W68
2024-01-07 02:38:02 C 03 15 54.396 -43 16 57.00 V W68
2024-01-07 02:53:24 C 03 15 53.234 -43 17 00.28 V W68
2024-01-11 01:59:01 C 03 09 42.257 -43 35 32.57 V W68
2024-01-11 02:03:08 C 03 09 41.976 -43 35 32.96 V W68
2024-01-11 02:11:07 C 03 09 41.426 -43 35 33.97 V W68
2024-01-11 02:26:21 C 03 09 40.402 -43 35 35.99 V W68
2024-01-12 19:15:56 C 03 07 17.302 -43 41 18.49 V M22
2024-01-12 19:21:29 C 03 07 16.946 -43 41 19.46 V M22
2024-01-12 19:29:07 C 03 07 16.440 -43 41 19.86 V M22
2024-01-12 19:49:21 C 03 07 15.161 -43 41 22.09 V M22
2024-01-12 19:50:00 C 03 07 15.118 -43 41 22.02 V M22
2024-01-12 19:54:11 C 03 07 14.875 -43 41 22.52 V M22
2024-01-12 20:02:47 C 03 07 14.302 -43 41 23.39 V M22
2024-01-12 20:16:59 C 03 07 13.430 -43 41 24.76 V M22
2024-01-15 01:50:24 C 03 04 18.619 -43 47 15.47 V W68
2024-01-15 01:55:44 C 03 04 18.322 -43 47 15.83 V W68
2024-01-15 02:05:04 C 03 04 17.758 -43 47 16.73 V W68
2024-01-15 02:19:55 C 03 04 16.894 -43 47 17.56 V W68
2024-01-19 01:32:36 C 02 59 38.042 -43 54 10.55 V W68
2024-01-19 01:37:10 C 02 59 37.800 -43 54 11.02 V W68
2024-01-19 01:45:52 C 02 59 37.339 -43 54 10.66 V W68
2024-01-19 02:05:46 C 02 59 36.326 -43 54 11.38 V W68
2024-01-23 01:17:34 C 02 55 28.690 -43 58 04.44 V W68
2024-01-23 01:22:11 C 02 55 28.442 -43 58 04.30 V W68
2024-01-23 01:32:24 C 02 55 27.977 -43 58 04.22 V W68
2024-01-23 01:49:47 C 02 55 27.125 -43 58 04.58 V W68
2024-01-24 19:17:48 C 02 53 45.955 -43 59 08.99 V M22
2024-01-24 19:21:53 C 02 53 45.744 -43 59 09.02 V M22
2024-01-24 19:31:18 C 02 53 45.283 -43 59 08.92 V M22
2024-01-24 19:45:26 C 02 53 44.666 -43 59 08.88 V M22
2024-01-27 01:05:18 C 02 51 37.932 -44 00 12.06 V W68
2024-01-27 01:09:56 C 02 51 37.730 -44 00 12.49 V W68
2024-01-27 01:17:18 C 02 51 37.382 -44 00 12.42 V W68
2024-01-27 01:35:18 C 02 51 36.574 -44 00 11.84 V W68
2024-01-31 01:57:12 C 02 47 49.346 -44 01 23.34 V W68
2024-01-31 02:32:46 C 02 47 47.786 -44 01 21.97 V W68
2024-01-31 02:57:56 C 02 47 46.646 -44 01 20.93 V W68
2024-01-31 03:12:57 C 02 47 46.056 -44 01 20.14 V W68