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
2024-11-18 08:01:17 C 01 19 53.267 -07 00 06.05 V 703
2024-11-18 08:04:33 C 01 19 53.094 -07 00 10.48 V 703
2024-11-18 21:06:17 C 01 19 18.643 -07 17 37.86 V M22
2024-11-18 21:10:51 C 01 19 18.408 -07 17 43.91 V M22
2024-11-18 21:20:02 C 01 19 17.952 -07 17 56.47 V M22
2024-11-18 21:53:29 C 01 19 16.342 -07 18 41.47 V M22
2024-11-19 06:00:13 C 01 18 55.408 -07 29 55.57 V 703
2024-11-19 06:03:29 C 01 18 55.249 -07 29 59.75 V 703
2024-11-19 06:06:44 C 01 18 55.127 -07 30 03.71 V 703
2024-11-19 06:10:00 C 01 18 54.950 -07 30 07.70 V 703
2024-11-20 06:17:14 C 01 17 55.180 -08 01 29.21 V 703
2024-11-20 06:20:30 C 01 17 55.057 -08 01 33.42 V 703
2024-11-20 06:23:46 C 01 17 54.877 -08 01 37.24 V 703
2024-11-20 06:27:01 C 01 17 54.755 -08 01 41.56 V 703
2024-11-20 08:02:00 C 01 17 51.384 -08 03 38.41 V T08
2024-11-20 08:06:40 C 01 17 51.161 -08 03 44.42 V T08
2024-11-20 08:16:29 C 01 17 50.717 -08 03 56.70 V T08
2024-11-20 08:23:09 C 01 17 50.422 -08 04 05.38 V T08
2024-11-20 08:27:47 C 01 17 50.215 -08 04 11.14 V T08
2024-11-20 08:32:24 C 01 17 50.009 -08 04 16.79 V T08
2024-11-20 08:36:23 C 01 17 49.836 -08 04 21.97 V T08
2024-11-20 08:54:53 C 01 17 48.994 -08 04 45.26 V T08
2024-11-21 02:51:50 C 01 17 07.946 -08 26 47.26 V W68
2024-11-21 03:06:14 C 01 17 07.327 -08 27 04.82 V W68
2024-11-21 03:14:42 C 01 17 06.970 -08 27 15.16 V W68
2024-11-21 06:16:22 C 01 17 00.190 -08 31 17.04 V 703
2024-11-21 06:19:39 C 01 17 00.071 -08 31 20.96 V 703
2024-11-21 06:22:54 C 01 16 59.912 -08 31 24.78 V 703
2024-11-21 06:26:09 C 01 16 59.804 -08 31 28.49 V 703
2024-11-22 08:01:04 C 01 16 06.398 -09 01 42.56 V T05
2024-11-22 08:05:38 C 01 16 06.228 -09 01 47.60 V T05
2024-11-22 08:19:38 C 01 16 05.681 -09 02 03.91 V T05
2024-11-22 08:34:42 C 01 16 05.100 -09 02 21.16 V T05
2024-11-22 20:29:34 C 01 15 41.873 -09 15 38.27 V M22
2024-11-22 20:34:12 C 01 15 41.705 -09 15 43.42 V M22
2024-11-22 20:44:04 C 01 15 41.352 -09 15 54.43 V M22
2024-11-22 21:18:00 C 01 15 40.126 -09 16 32.30 V M22
2024-11-24 07:58:46 C 01 14 38.765 -09 54 27.47 V T08
2024-11-24 08:04:42 C 01 14 38.563 -09 54 33.52 V T08
2024-11-24 08:14:55 C 01 14 38.244 -09 54 44.17 V T08
2024-11-24 08:31:29 C 01 14 37.704 -09 55 01.49 V T08
2024-11-25 02:26:21 C 01 14 09.566 -10 13 08.29 V W68
2024-11-25 02:31:34 C 01 14 09.408 -10 13 13.33 V W68
2024-11-25 02:40:42 C 01 14 09.115 -10 13 22.76 V W68
2024-11-25 02:55:04 C 01 14 08.702 -10 13 36.95 V W68
2024-11-25 23:45:29 C 01 13 39.83 -10 34 26.1 V W46
2024-11-25 23:54:10 C 01 13 39.60 -10 34 34.4 V W46
2024-11-26 00:15:50 C 01 13 39.01 -10 34 55.3 V W46
2024-11-26 06:30:30 C 01 13 29.561 -10 40 52.03 V 703
2024-11-26 06:33:45 C 01 13 29.478 -10 40 55.02 V 703