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
2021-07-16 11:29:47 C 03 58 43.37 +22 22 09.7 U I41
2021-11-04 14:54:12 C 09 46 31.25 -09 10 13.5 V T05
2021-11-04 15:08:42 C 09 46 33.45 -09 10 33.9 V T05
2021-11-04 15:19:16 C 09 46 35.20 -09 10 49.6 V T05
2021-11-04 15:27:12 C 09 46 36.34 -09 11 00.2 V T05
2021-11-27 15:02:07 C 11 24 50.49 -22 22 48.8 V T05
2021-11-27 15:17:22 C 11 24 53.53 -22 23 09.6 V T05
2021-11-27 15:33:16 C 11 24 56.70 -22 23 30.7 V T05
2021-11-27 15:45:09 C 11 24 59.19 -22 23 47.3 V T05
2022-06-17 11:04:51 C 01 55 08.899 +22 25 05.41 U I41
2022-06-17 11:09:49 C 01 55 09.470 +22 25 07.50 U I41
2022-06-17 11:12:40 C 01 55 09.821 +22 25 08.18 U I41
2022-06-17 11:15:30 C 01 55 10.150 +22 25 09.01 U I41
2022-10-08 14:18:12 C 06 58 34.409 +10 36 06.44 V T05
2022-10-08 14:26:01 C 06 58 35.220 +10 35 58.49 V T05
2022-10-08 14:30:35 C 06 58 35.623 +10 35 52.51 V T05
2022-10-08 14:57:11 C 06 58 38.340 +10 35 23.14 V T05
2022-10-29 10:50:59 C 07 50 28.208 -01 10 10.24 V G96
2022-10-29 10:59:17 C 07 50 29.065 -01 10 23.84 V G96
2022-10-29 11:07:35 C 07 50 29.882 -01 10 38.28 V G96
2022-10-29 11:15:55 C 07 50 30.725 -01 10 52.39 V G96
2022-10-30 14:38:22 C 07 53 22.068 -01 57 31.90 V T08
2022-10-30 14:42:22 C 07 53 22.486 -01 57 38.63 V T08
2022-10-30 14:47:01 C 07 53 22.915 -01 57 46.73 V T08
2022-10-30 14:55:00 C 07 53 23.758 -01 58 00.52 V T08
2022-10-30 15:10:47 C 07 53 25.373 -01 58 27.70 V T08
2022-10-30 15:20:16 C 07 53 26.316 -01 58 44.18 V T08
2022-10-31 07:52:57 C 07 55 10.502 -02 27 12.17 V W68
2022-10-31 08:02:04 C 07 55 11.350 -02 27 27.61 V W68
2022-10-31 08:27:31 C 07 55 13.855 -02 28 13.76 V W68
2022-10-31 08:43:14 C 07 55 15.605 -02 28 39.90 V W68
2022-11-01 13:58:30 C 07 58 19.670 -03 20 20.87 V T05
2022-11-01 14:01:06 C 07 58 19.937 -03 20 25.37 V T05
2022-11-01 14:08:57 C 07 58 20.758 -03 20 38.69 V T05
2022-11-01 14:32:34 C 07 58 23.117 -03 21 20.95 V T05
2022-11-04 07:15:45 C 08 05 12.905 -05 18 38.02 V W68
2022-11-04 07:19:39 C 08 05 13.320 -05 18 45.25 V W68
2022-11-04 07:27:50 C 08 05 14.170 -05 19 00.62 V W68
2022-11-04 07:30:23 C 08 05 14.438 -05 19 05.09 V W68
2022-11-05 17:49:45 C 08 08 53.38 -06 23 37.2 V D29
2022-11-05 18:04:47 C 08 08 54.93 -06 24 06.2 V D29
2022-11-05 18:19:49 C 08 08 56.51 -06 24 34.0 V D29
2022-11-07 13:36:24 C 08 13 34.224 -07 47 33.79 V T08
2022-11-07 13:40:23 C 08 13 34.637 -07 47 41.32 V T08
2022-11-07 13:44:23 C 08 13 35.028 -07 47 49.34 V T08
2022-11-07 13:59:01 C 08 13 36.511 -07 48 17.78 V T08
2022-11-13 10:51:41 C 08 29 00.085 -12 33 25.96 V 703
2022-11-13 11:09:25 C 08 29 01.993 -12 34 03.47 V 703
2022-11-13 11:18:17 C 08 29 03.044 -12 34 22.69 V 703
2022-11-14 00:31:09 C 08 30 31.882 -13 01 58.58 V M22