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
2023-12-15 04:00:27 C 04 09 35.834 -37 01 06.67 V W68
2023-12-15 04:08:21 C 04 09 34.831 -37 01 16.93 V W68
2023-12-15 04:23:35 C 04 09 32.890 -37 01 36.44 V W68
2023-12-15 21:32:06 C 04 07 30.480 -37 23 27.46 V M22
2023-12-15 21:46:43 C 04 07 28.632 -37 23 45.53 V M22
2023-12-15 21:51:22 C 04 07 28.044 -37 23 51.58 V M22
2023-12-15 21:59:21 C 04 07 27.017 -37 24 01.15 V M22
2023-12-16 01:42:28 C 04 07 01.584 -37 28 38.89 V W68
2023-12-16 01:45:43 C 04 07 01.174 -37 28 42.92 V W68
2023-12-16 02:16:52 C 04 06 57.247 -37 29 22.27 V W68
2023-12-17 21:07:49 C 04 01 54.214 -38 19 52.07 V M22
2023-12-17 21:20:52 C 04 01 52.541 -38 20 06.94 V M22
2023-12-17 22:05:48 C 04 01 47.002 -38 20 56.36 V M22
2023-12-17 22:10:24 C 04 01 46.438 -38 21 01.22 V M22
2023-12-18 03:49:56 C 04 01 07.152 -38 27 19.33 V W68
2023-12-18 03:54:34 C 04 01 06.576 -38 27 24.77 V W68
2023-12-18 04:03:50 C 04 01 05.412 -38 27 34.42 V W68
2023-12-18 04:52:42 C 04 00 59.407 -38 28 27.55 V W68
2023-12-19 02:57:32 C 03 58 27.485 -38 52 08.04 V W68
2023-12-19 03:14:22 C 03 58 25.418 -38 52 25.61 V W68
2023-12-19 03:19:00 C 03 58 24.862 -38 52 30.32 V W68
2023-12-19 03:39:02 C 03 58 22.392 -38 52 51.10 V W68
2023-12-19 21:47:22 C 03 56 18.341 -39 11 17.77 V M22
2023-12-19 21:52:01 C 03 56 17.786 -39 11 22.09 V M22
2023-12-19 21:59:57 C 03 56 16.814 -39 11 29.90 V M22
2023-12-19 22:16:01 C 03 56 14.892 -39 11 45.56 V M22
2023-12-22 03:16:22 C 03 50 21.847 -40 01 01.34 V W68
2023-12-22 03:33:08 C 03 50 19.903 -40 01 15.74 V W68
2023-12-22 03:48:16 C 03 50 18.101 -40 01 28.63 V W68
2023-12-22 03:58:10 C 03 50 16.997 -40 01 36.98 V W68
2023-12-22 04:02:46 C 03 50 16.474 -40 01 41.05 V W68
2023-12-22 04:12:42 C 03 50 15.319 -40 01 49.87 V W68
2023-12-23 21:15:53 C 03 45 51.902 -40 35 22.78 V M22
2023-12-23 21:20:32 C 03 45 51.372 -40 35 26.23 V M22
2023-12-23 21:29:17 C 03 45 50.378 -40 35 33.04 V M22
2023-12-23 21:44:07 C 03 45 48.708 -40 35 43.84 V M22
2023-12-26 03:01:45 C 03 40 20.815 -41 13 53.47 V W68
2023-12-26 03:24:58 C 03 40 18.355 -41 14 08.34 V W68
2023-12-26 03:29:42 C 03 40 17.818 -41 14 11.62 V W68
2023-12-26 03:39:31 C 03 40 16.788 -41 14 17.70 V W68
2023-12-30 02:38:26 C 03 31 15.115 -42 08 43.76 V W68
2023-12-30 02:43:40 C 03 31 14.609 -42 08 46.10 V W68
2023-12-30 02:52:14 C 03 31 13.781 -42 08 50.10 V W68
2023-12-30 03:07:22 C 03 31 12.319 -42 08 57.48 V W68
2023-12-31 05:41:16 S 03 28 51.83 -42 21 19.8 L C51
2023-12-31 07:14:14 S 03 28 43.74 -42 22 01.7 L C51
2023-12-31 08:47:12 S 03 28 35.68 -42 22 42.4 L C51
2023-12-31 10:20:10 S 03 28 27.56 -42 23 23.5 L C51
2023-12-31 13:25:55 S 03 28 11.49 -42 24 45.3 L C51
2023-12-31 14:58:53 S 03 28 03.47 -42 25 25.8 L C51