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
2024-12-29 02:30:35 C 01 26 06.497 -15 29 12.80 V W68
2024-12-30 06:01:46 C 01 27 22.272 -15 28 33.85 V T08
2024-12-30 06:04:24 C 01 27 22.370 -15 28 34.10 V T08
2024-12-30 06:07:04 C 01 27 22.522 -15 28 34.36 V T08
2024-12-30 06:10:22 C 01 27 22.656 -15 28 33.85 V T08
2024-12-30 06:21:16 C 01 27 23.138 -15 28 32.99 V T08
2024-12-30 06:24:35 C 01 27 23.263 -15 28 33.02 V T08
2024-12-30 06:29:53 C 01 27 23.486 -15 28 32.30 V T08
2024-12-30 06:34:31 C 01 27 23.671 -15 28 33.13 V T08
2025-01-02 01:39:59 C 01 30 37.718 -15 24 25.56 V W68
2025-01-02 01:44:42 C 01 30 37.939 -15 24 25.63 V W68
2025-01-02 01:52:06 C 01 30 38.287 -15 24 24.16 V W68
2025-01-02 02:06:10 C 01 30 38.962 -15 24 23.15 V W68
2025-01-03 06:02:40 C 01 32 04.169 -15 22 11.86 V T08
2025-01-03 06:07:16 C 01 32 04.394 -15 22 11.57 V T08
2025-01-03 06:18:28 C 01 32 04.925 -15 22 09.44 V T08
2025-01-03 06:34:39 C 01 32 05.729 -15 22 08.90 V T08
2025-01-05 06:08:48 C 01 34 35.808 -15 17 10.10 V T05
2025-01-05 06:13:22 C 01 34 36.041 -15 17 09.38 V T05
2025-01-05 06:25:18 C 01 34 36.646 -15 17 08.77 V T05
2025-01-05 06:39:21 C 01 34 37.390 -15 17 06.04 V T05
2025-01-11 03:27:13 C 01 42 37.548 -14 56 22.70 V G96
2025-01-11 03:35:17 C 01 42 38.023 -14 56 20.65 V G96
2025-01-11 03:43:23 C 01 42 38.480 -14 56 19.86 V G96
2025-01-11 03:51:29 C 01 42 38.941 -14 56 18.42 V G96
2025-01-16 18:51:19 C 01 51 04.505 -14 29 03.95 V M22
2025-01-16 18:55:52 C 01 51 04.838 -14 29 02.40 V M22
2025-01-16 19:06:19 C 01 51 05.429 -14 29 00.02 V M22
2025-01-16 19:22:03 C 01 51 06.410 -14 28 55.52 V M22
2025-01-18 01:01:37 C 01 53 02.983 -14 22 11.24 V W68
2025-01-18 01:09:28 C 01 53 03.526 -14 22 08.72 V W68
2025-01-18 01:14:02 C 01 53 03.768 -14 22 08.11 V W68
2025-01-18 01:18:15 C 01 53 04.025 -14 22 06.74 V W68
2025-01-18 01:29:32 C 01 53 04.754 -14 22 04.19 V W68
2025-01-18 02:01:44 C 01 53 06.768 -14 21 56.30 V W68
2025-01-20 01:40:18 C 01 56 17.921 -14 10 30.50 V W68
2025-01-20 01:48:54 C 01 56 18.516 -14 10 27.77 V W68
2025-01-20 02:03:31 C 01 56 19.447 -14 10 23.70 V W68
2025-01-20 02:08:12 C 01 56 19.721 -14 10 23.02 V W68
2025-01-21 06:03:03 C 01 58 14.146 -14 03 32.08 V T05
2025-01-21 06:22:09 C 01 58 15.391 -14 03 27.76 V T05
2025-01-21 06:32:40 C 01 58 16.092 -14 03 24.84 V T05
2025-01-21 06:50:19 C 01 58 17.242 -14 03 20.45 V T05
2025-01-21 07:04:47 C 01 58 18.156 -14 03 16.85 V T05
2025-01-23 06:25:40 C 02 01 35.544 -13 50 51.97 V T08
2025-01-23 06:30:17 C 02 01 35.875 -13 50 51.00 V T08
2025-01-23 06:38:13 C 02 01 36.350 -13 50 49.31 V T08
2025-01-23 06:54:02 C 02 01 37.459 -13 50 44.30 V T08
2025-02-01 01:58:15 C 02 17 09.200 -12 48 38.34 V 703
2025-02-01 02:01:40 C 02 17 09.496 -12 48 38.52 V 703