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
2025-08-21 21:40:14 C 23 45 11.815 +61 31 17.80 Z C23
2025-08-21 21:42:15 C 23 45 11.561 +61 31 16.82 Z C23
2025-08-21 22:16:52 C 23 45 07.776 +61 30 53.46 Z C23
2025-08-21 22:18:38 C 23 45 07.586 +61 30 52.13 Z C23
2025-08-23 01:48:58 B 23 42 16.740 +61 10 34.21 q Y84
2025-08-23 01:53:19 B 23 42 16.246 +61 10 30.94 q Y84
2025-08-23 01:57:40 B 23 42 15.761 +61 10 27.19 q Y84
2025-08-23 20:58:52 C 23 40 18.40 +60 55 19.4 V M31
2025-08-23 20:59:58 C 23 40 18.20 +60 55 18.2 V M31
2025-08-23 21:01:03 C 23 40 17.93 +60 55 18.0 V M31
2025-08-23 21:02:08 C 23 40 17.98 +60 55 16.1 V M31
2025-08-23 21:03:11 C 23 40 17.88 +60 55 15.6 V M31
2025-08-23 21:04:16 C 23 40 17.77 +60 55 15.1 V M31
2025-08-23 21:05:23 C 23 40 17.62 +60 55 14.1 V M31
2025-08-23 21:06:26 C 23 40 17.54 +60 55 13.8 V M31
2025-08-23 21:07:31 C 23 40 17.37 +60 55 12.9 V M31
2025-08-23 21:08:34 C 23 40 17.32 +60 55 11.7 V M31
2025-08-23 21:09:38 C 23 40 17.15 +60 55 10.4 V M31
2025-08-23 21:10:43 C 23 40 17.06 +60 55 09.9 V M31
2025-08-23 23:00:30 C 23 40 05.854 +60 53 45.10 Z C23
2025-08-23 23:25:54 C 23 40 02.827 +60 53 24.86 Z C23
2025-08-23 23:27:04 C 23 40 02.534 +60 53 24.07 Z C23
2025-08-24 21:34:24 C 23 37 44.117 +60 34 46.24 Z C23
2025-08-24 21:36:08 C 23 37 43.992 +60 34 44.83 Z C23
2025-08-24 21:53:07 C 23 37 42.137 +60 34 31.26 Z C23
2025-08-24 21:54:17 C 23 37 41.962 +60 34 29.75 Z C23
2025-08-25 07:38:23 B 23 36 40.063 +60 26 06.86 V U62
2025-08-25 07:52:15 B 23 36 38.460 +60 25 55.06 V U62
2025-08-25 08:19:58 B 23 36 35.280 +60 25 31.12 V U62
2025-08-25 10:37:51 C 23 36 20.815 +60 23 33.43 V T08
2025-08-25 10:41:52 C 23 36 20.328 +60 23 30.05 V T08
2025-08-25 10:47:54 C 23 36 19.622 +60 23 24.68 V T08
2025-08-25 10:51:54 C 23 36 19.162 +60 23 21.26 V T08
2025-08-25 10:57:56 C 23 36 18.451 +60 23 15.97 V T08
2025-08-25 11:01:56 C 23 36 17.976 +60 23 12.44 V T08
2025-08-25 11:07:58 C 23 36 17.263 +60 23 07.08 V T08
2025-08-25 11:11:58 C 23 36 16.788 +60 23 03.66 V T08
2025-08-26 07:43:56 B 23 34 06.792 +60 04 06.67 V U62
2025-08-26 07:57:43 B 23 34 05.222 +60 03 54.40 V U62
2025-08-26 08:11:18 B 23 34 03.595 +60 03 41.90 V U62
2025-08-26 23:33:01 C 23 32 24.29 +59 48 52.9 X C40
2025-08-26 23:35:26 C 23 32 24.02 +59 48 50.6 X C40
2025-08-26 23:37:51 C 23 32 23.74 +59 48 48.2 X C40
2025-08-26 23:40:15 C 23 32 23.46 +59 48 45.8 X C40
2025-08-26 23:42:39 C 23 32 23.19 +59 48 43.6 X C40
2025-08-26 23:45:05 C 23 32 22.89 +59 48 41.1 X C40
2025-08-26 23:47:30 C 23 32 22.62 +59 48 38.6 X C40
2025-08-26 23:49:55 C 23 32 22.33 +59 48 36.3 X C40
2025-08-26 23:52:14 C 23 32 22.07 +59 48 34.0 X C40
2025-08-26 23:54:26 C 23 32 21.82 +59 48 31.7 X C40