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
2024-09-27 10:23:12 C 03 00 50.900 +32 43 41.05 V 703
2024-09-27 10:26:33 C 03 00 50.735 +32 43 37.56 V 703
2024-09-27 10:29:54 C 03 00 50.576 +32 43 34.10 V 703
2024-09-27 10:33:08 C 03 00 50.422 +32 43 30.25 V 703
2024-09-28 08:58:29 C 02 59 50.640 +32 18 45.00 V 703
2024-09-28 09:01:51 C 02 59 50.460 +32 18 41.44 V 703
2024-09-28 09:05:12 C 02 59 50.291 +32 18 37.55 V 703
2024-09-28 09:08:33 C 02 59 50.111 +32 18 33.73 V 703
2024-09-28 12:06:54 C 02 59 41.818 +32 15 16.24 V T05
2024-09-28 12:09:30 C 02 59 41.676 +32 15 13.36 V T05
2024-09-28 12:46:46 C 02 59 39.703 +32 14 31.31 V T05
2024-09-28 12:51:34 C 02 59 39.444 +32 14 25.51 V T05
2024-09-28 23:28:30 C 02 59 09.590 +32 02 03.52 Z C23
2024-09-29 00:20:28 C 02 59 06.874 +32 01 03.83 Z C23
2024-09-29 01:18:35 C 02 59 03.780 +31 59 57.01 Z C23
2024-09-29 11:09:52 C 02 58 34.889 +31 48 33.44 V T05
2024-09-29 11:55:30 C 02 58 32.306 +31 47 39.80 V T05
2024-09-29 12:19:20 C 02 58 30.960 +31 47 11.62 V T05
2024-09-29 12:21:56 C 02 58 30.823 +31 47 08.56 V T05
2024-09-30 09:55:11 C 02 57 24.271 +31 21 02.05 V T08
2024-09-30 09:59:51 C 02 57 23.988 +31 20 56.58 V T08
2024-09-30 10:07:14 C 02 57 23.566 +31 20 47.80 V T08
2024-09-30 10:58:15 C 02 57 20.532 +31 19 45.98 V T08
2024-10-01 07:51:35 C 02 56 11.137 +30 53 22.92 V G96
2024-10-01 07:59:00 C 02 56 10.684 +30 53 13.52 V G96
2024-10-01 08:06:25 C 02 56 10.216 +30 53 04.02 V G96
2024-10-01 08:13:49 C 02 56 09.748 +30 52 54.70 V G96
2024-10-01 11:41:28 C 02 55 57.754 +30 48 32.36 V T08
2024-10-01 12:17:19 C 02 55 55.476 +30 47 46.28 V T08
2024-10-01 12:28:41 C 02 55 54.725 +30 47 31.52 V T08
2024-10-01 12:31:21 C 02 55 54.564 +30 47 28.03 V T08
2024-10-01 19:43:27 C 02 55 30.492 +30 37 46.78 Z C23
2024-10-01 21:12:10 C 02 55 25.186 +30 35 53.30 Z C23
2024-10-02 09:09:27 C 02 54 41.663 +30 20 12.30 V 703
2024-10-02 09:12:52 C 02 54 41.450 +30 20 08.05 V 703
2024-10-02 09:16:08 C 02 54 41.216 +30 20 03.41 V 703
2024-10-02 09:19:24 C 02 54 40.972 +30 19 59.16 V 703
2024-10-02 14:03:02 C 02 54 23.052 +30 13 40.12 V T05
2024-10-02 14:33:30 C 02 54 20.983 +30 12 58.43 V T05
2024-10-02 14:52:54 C 02 54 19.709 +30 12 31.54 V T05
2024-10-02 14:59:52 C 02 54 19.236 +30 12 21.92 V T05
2024-10-03 10:47:00 C 02 53 06.338 +29 45 06.59 V T05
2024-10-03 10:51:40 C 02 53 06.012 +29 45 00.11 V T05
2024-10-03 10:58:10 C 02 53 05.556 +29 44 51.04 V T05
2024-10-03 11:43:11 C 02 53 02.412 +29 43 48.54 V T05
2024-10-04 08:07:50 C 02 51 42.124 +29 14 34.55 V 703
2024-10-04 08:11:07 C 02 51 41.893 +29 14 29.98 V 703
2024-10-04 08:14:23 C 02 51 41.634 +29 14 25.44 V 703
2024-10-04 08:17:39 C 02 51 41.411 +29 14 20.62 V 703
2024-10-05 08:32:14 C 02 50 01.295 +28 38 24.22 V 703