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
2024-02-04 00:51:55 C 02 43 56.220 -44 02 10.50 V W68
2024-02-04 00:59:19 C 02 43 55.812 -44 02 10.50 V W68
2024-02-04 01:03:53 C 02 43 55.603 -44 02 10.50 V W68
2024-02-04 01:19:16 C 02 43 54.850 -44 02 10.28 V W68
2024-02-08 01:21:11 C 02 39 31.762 -44 02 40.02 V W68
2024-02-08 01:25:48 C 02 39 31.490 -44 02 39.55 V W68
2024-02-08 01:33:50 C 02 39 31.056 -44 02 39.19 V W68
2024-02-08 02:09:03 C 02 39 29.189 -44 02 37.75 V W68
2024-02-09 19:34:09 C 02 37 22.644 -44 02 44.20 V M22
2024-02-09 20:11:50 C 02 37 20.462 -44 02 42.36 V M22
2024-02-09 20:22:33 C 02 37 19.858 -44 02 42.18 V M22
2024-02-12 01:26:59 C 02 34 21.946 -44 02 41.89 V W68
2024-02-12 01:31:40 C 02 34 21.638 -44 02 41.68 V W68
2024-02-12 02:00:23 C 02 34 19.807 -44 02 39.98 V W68
2024-02-12 02:26:13 C 02 34 18.209 -44 02 38.47 V W68
2024-02-13 19:35:14 C 02 31 45.427 -44 02 23.42 V M22
2024-02-13 19:42:11 C 02 31 44.950 -44 02 22.85 V M22
2024-02-13 20:13:05 C 02 31 42.862 -44 02 20.72 V M22
2024-02-13 20:39:48 C 02 31 41.059 -44 02 18.89 V M22
2024-02-16 01:09:21 C 02 28 03.442 -44 01 33.64 V W68
2024-02-16 01:14:00 C 02 28 03.106 -44 01 33.49 V W68
2024-02-16 01:22:00 C 02 28 02.443 -44 01 32.81 V W68
2024-02-16 01:58:04 C 02 27 59.647 -44 01 29.89 V W68
2024-02-28 01:34:40 C 01 57 04.445 -43 23 57.37 V W68
2024-02-28 01:38:54 C 01 57 03.794 -43 23 55.54 V W68
2024-02-28 02:01:22 C 01 57 00.442 -43 23 47.15 V W68
2024-02-28 02:06:46 C 01 56 59.647 -43 23 44.30 V W68
2024-05-07 14:14:25 C 23 08 48.302 +17 59 10.39 V T05
2024-05-07 14:44:12 C 23 08 50.436 +17 59 49.67 V T05
2024-05-07 14:50:28 C 23 08 50.904 +17 59 57.34 V T05
2024-05-07 14:57:39 C 23 08 51.449 +18 00 06.73 V T05
2024-05-20 10:56:26 C 23 34 24.244 +23 43 22.12 V 703
2024-05-20 10:59:48 C 23 34 24.517 +23 43 25.50 V 703
2024-05-20 11:03:10 C 23 34 24.863 +23 43 28.16 V 703
2024-05-20 11:06:31 C 23 34 25.126 +23 43 31.69 V 703
2024-06-02 13:55:05 C 00 03 57.492 +28 15 13.50 V T08
2024-06-02 14:01:05 C 00 03 58.049 +28 15 18.04 V T08
2024-06-02 14:25:21 C 00 04 00.300 +28 15 36.90 V T08
2024-06-02 14:40:16 C 00 04 01.762 +28 15 48.20 V T08
2024-06-08 13:55:20 C 00 17 57.293 +30 00 13.90 V T05
2024-06-08 14:01:14 C 00 17 57.871 +30 00 18.22 V T05
2024-06-08 14:18:48 C 00 17 59.551 +30 00 30.31 V T05
2024-06-08 14:34:43 C 00 18 01.049 +30 00 41.00 V T05
2024-06-10 13:31:57 C 00 22 36.624 +30 32 38.62 V T08
2024-06-10 13:36:37 C 00 22 36.970 +30 32 40.88 V T08
2024-06-10 13:44:37 C 00 22 37.759 +30 32 46.86 V T08
2024-06-10 14:13:17 C 00 22 40.550 +30 33 06.41 V T08
2024-06-16 09:59:30 C 00 36 21.240 +32 02 00.38 V 703
2024-06-16 10:02:51 C 00 36 21.524 +32 02 02.54 V 703
2024-06-16 10:06:13 C 00 36 21.931 +32 02 04.45 V 703