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
2025-08-26 23:56:39 C 23 32 21.54 +59 48 29.5 X C40
2025-08-26 23:58:52 C 23 32 21.29 +59 48 27.3 X C40
2025-08-27 03:55:15 C 23 31 55.392 +59 44 34.80 Z R60
2025-08-27 03:58:14 C 23 31 55.025 +59 44 31.67 Z R60
2025-08-27 04:01:16 C 23 31 54.696 +59 44 28.50 Z R60
2025-08-27 04:04:16 C 23 31 54.346 +59 44 25.55 Z R60
2025-08-27 04:07:16 C 23 31 54.007 +59 44 22.34 Z R60
2025-08-27 22:02:40 B 23 30 01.543 +59 26 16.04 V S47
2025-08-27 22:08:47 B 23 30 00.840 +59 26 09.78 V S47
2025-08-27 22:14:53 B 23 30 00.130 +59 26 03.59 V S47
2025-08-27 22:20:29 B 23 29 59.479 +59 25 57.86 V S47
2025-08-27 22:25:34 B 23 29 58.886 +59 25 52.64 V S47
2025-08-28 11:45:45 C 23 28 32.729 +59 12 00.86 V T05
2025-08-28 11:47:45 C 23 28 32.527 +59 11 58.67 V T05
2025-08-28 12:07:05 C 23 28 30.206 +59 11 37.86 V T05
2025-08-28 12:09:05 C 23 28 29.974 +59 11 35.77 V T05
2025-08-28 21:36:50 C 23 27 31.106 +59 01 08.87 Z C23
2025-08-28 21:56:32 C 23 27 28.987 +59 00 47.59 Z C23
2025-08-28 22:03:08 B 23 27 27.655 +59 00 45.61 V S47
2025-08-28 22:09:14 B 23 27 26.957 +59 00 39.02 V S47
2025-08-28 22:15:22 B 23 27 26.244 +59 00 32.51 V S47
2025-08-28 22:20:58 B 23 27 25.610 +59 00 26.50 V S47
2025-08-28 22:26:04 B 23 27 24.998 +59 00 20.99 V S47
2025-08-29 00:21:36 C 23 27 11.18 +58 58 12.7 X C40
2025-08-29 00:24:02 C 23 27 10.96 +58 58 09.4 X C40
2025-08-29 00:26:27 C 23 27 10.68 +58 58 07.3 X C40
2025-08-29 00:28:50 C 23 27 10.33 +58 58 04.4 X C40
2025-08-29 00:31:14 C 23 27 10.15 +58 58 01.6 X C40
2025-08-29 00:33:39 C 23 27 09.86 +58 57 58.7 X C40
2025-08-29 00:36:03 C 23 27 09.55 +58 57 56.8 X C40
2025-08-29 00:40:46 C 23 27 08.96 +58 57 51.0 X C40
2025-08-29 00:42:59 C 23 27 08.74 +58 57 48.4 X C40
2025-08-29 00:47:23 C 23 27 08.30 +58 57 43.6 X C40
2025-08-29 03:17:09 C 23 26 52.435 +58 55 01.81 Z R60
2025-08-29 03:20:11 C 23 26 51.970 +58 54 57.67 Z R60
2025-08-29 03:23:11 C 23 26 51.641 +58 54 54.54 Z R60
2025-08-30 11:37:34 C 23 23 26.506 +58 18 04.57 V T08
2025-08-30 12:54:11 C 23 23 17.479 +58 16 31.55 V T08
2025-08-30 13:30:28 C 23 23 13.236 +58 15 46.98 V T08
2025-08-31 10:35:51 C 23 21 01.066 +57 50 05.46 V T08
2025-08-31 11:00:16 C 23 20 58.186 +57 49 34.68 V T08
2025-08-31 11:02:18 C 23 20 57.934 +57 49 32.34 V T08
2025-08-31 11:07:37 C 23 20 57.343 +57 49 25.64 V T08
2025-09-01 02:43:32 C 23 19 18.079 +57 29 32.64 V R17
2025-09-01 03:05:43 C 23 19 15.490 +57 29 03.55 V R17
2025-09-01 03:26:02 C 23 19 13.152 +57 28 36.55 V R17
2025-09-01 03:45:53 C 23 19 10.884 +57 28 10.13 V R17
2025-09-03 05:07:18 B 23 14 04.32 +56 20 54.9 Z W37
2025-09-03 05:25:47 B 23 14 02.29 +56 20 29.2 Z W37
2025-09-03 05:42:16 B 23 14 00.48 +56 20 05.1 Z W37