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
1998-10-14 12:13:30 C 22 20 21.43 +16 42 18.6 360
1998-10-14 12:16:44 C 22 20 21.49 +16 42 11.6 360
1998-10-16 19:35:59 C 22 21 48.04 +14 35 59.3 046
1998-10-16 19:37:41 C 22 21 48.08 +14 35 55.5 046
1998-10-16 19:39:14 C 22 21 48.12 +14 35 52.0 046
1998-10-16 19:41:00 C 22 21 48.17 +14 35 48.0 046
1998-10-16 19:48:24 C 22 21 48.29 +14 35 30.2 049
1998-10-16 19:52:23 C 22 21 48.38 +14 35 21.8 049
1998-10-16 19:55:54 C 22 21 48.47 +14 35 14.1 049
1998-10-17 12:43:41 C 22 22 17.16 +13 58 43.2 422
1998-10-17 12:44:52 C 22 22 17.20 +13 58 40.5 422
1998-10-17 12:46:41 C 22 22 17.22 +13 58 36.7 422
1998-10-21 18:40:44 C 22 25 43.78 +10 27 34.2 557
1998-10-21 18:43:26 C 22 25 43.88 +10 27 28.9 557
1998-10-21 18:46:03 C 22 25 43.96 +10 27 24.0 557
1998-10-21 19:10:52 C 22 25 44.75 +10 26 36.3 118
1998-10-21 19:25:27 C 22 25 45.27 +10 26 07.6 118
1998-11-15 10:42:15 C 22 57 22.82 -02 37 08.5 360
1998-11-15 10:47:15 C 22 57 23.13 -02 37 12.7 360
1998-11-15 10:50:45 C 22 57 23.34 -02 37 15.4 360
1999-07-12 20:26:59 C 11 39 11.46 +35 56 12.4 595
1999-07-12 20:39:16 C 11 39 14.66 +35 56 23.4 595
1999-07-12 21:07:19 C 11 39 21.89 +35 56 50.2 595
1999-07-14 20:40:00 C 11 51 44.94 +36 41 12.3 595
1999-07-14 20:59:45 C 11 51 50.03 +36 41 28.8 595
1999-07-14 21:11:47 C 11 51 53.36 +36 41 39.2 595
1999-08-08 20:35:01 C 14 34 51.83 +39 37 36.3 c 118
1999-08-08 20:37:58 C 14 34 52.64 +39 37 35.1 c 118
1999-08-08 20:40:16 C 14 34 53.24 +39 37 33.7 557
1999-08-08 20:40:31 C 14 34 53.29 +39 37 34.6 c 118
1999-08-08 20:43:58 C 14 34 54.19 +39 37 32.3 557
1999-08-08 20:45:48 C 14 34 54.69 +39 37 31.0 557
1999-08-10 05:23:40 C 14 43 36.59 +39 23 41.6 658
1999-08-10 05:27:05 C 14 43 37.44 +39 23 40.1 658
1999-08-10 05:30:40 C 14 43 38.38 +39 23 38.1 658
1999-08-22 19:50:26 C 16 00 04.65 +35 28 11.3 d 046
1999-08-22 19:57:27 C 16 00 06.28 +35 28 04.0 d 046
1999-08-22 20:02:43 C 16 00 07.58 +35 27 57.9 d 046
1999-08-24 19:48:33 C 16 11 23.46 +34 35 08.9 c 118
1999-08-24 19:58:29 C 16 11 25.73 +34 34 57.3 c 118
1999-08-31 11:46:23 C 16 47 21.49 +31 14 01.1 z 402
1999-08-31 11:50:02 C 16 47 22.29 +31 13 55.9 z 402
1999-08-31 11:51:50 C 16 47 22.68 +31 13 53.4 z 402
1999-09-03 03:20:06 C 17 00 54.94 +29 45 24.8 18.0 b 704
1999-09-03 03:55:18 C 17 01 02.17 +29 44 34.5 18.5 b 704
1999-09-03 04:12:59 C 17 01 05.85 +29 44 08.4 18.6 b 704
1999-09-04 05:15:55 C 17 06 19.69 +29 08 01.9 c 658
1999-09-04 05:20:42 C 17 06 20.67 +29 07 54.9 c 658
1999-09-04 05:27:16 C 17 06 22.01 +29 07 45.2 c 658
1999-09-08 11:36:44 C 17 27 03.81 +26 35 44.6 360