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
1997-11-01 17:31:41 C 01 36 50.99 +05 36 06.7 046
1997-11-01 17:33:23 C 01 36 50.85 +05 36 02.8 046
1997-11-01 17:34:53 C 01 36 50.69 +05 35 59.7 046
1997-11-01 17:36:24 C 01 36 50.56 +05 35 56.1 046
1997-11-01 21:52:24 C 01 36 27.09 +05 26 17.6 z 540
1997-11-01 21:57:25 C 01 36 26.64 +05 26 06.4 z 540
1997-11-01 21:59:06 C 01 36 26.49 +05 26 02.6 z 540
1997-11-02 06:11:00 C 01 35 43.78 +05 07 39.4 z 670
1997-11-02 06:26:00 C 01 35 42.37 +05 07 04.3 z 670
1997-11-02 06:40:59 C 01 35 41.03 +05 06 32.2 z 670
1997-11-02 11:21:12 C 01 35 17.53 +04 56 27.5 426
1997-11-02 11:29:24 C 01 35 16.81 +04 56 10.1 426
1997-11-02 11:37:01 C 01 35 16.06 +04 55 53.0 426
1997-11-02 14:19:59 C 01 35 01.17 +04 49 23.6 360
1997-11-02 14:28:59 C 01 35 00.33 +04 49 03.5 360
1997-11-02 14:33:00 C 01 34 59.97 +04 48 54.6 360
1997-11-02 22:56:10 C 01 34 16.86 +04 30 10.0 046
1997-11-02 22:58:28 C 01 34 16.66 +04 30 04.9 046
1997-11-02 23:01:18 C 01 34 16.41 +04 29 58.6 046
1997-11-02 23:03:34 C 01 34 16.20 +04 29 53.6 046
1997-11-03 06:04:24 C 01 33 40.89 +04 14 27.0 z 700
1997-11-03 06:11:46 C 01 33 40.23 +04 14 10.8 z 700
1997-11-03 06:19:28 C 01 33 39.51 +04 13 53.6 z 700
1997-11-03 07:34:17 C 01 33 32.85 +04 11 09.6 18.0 b 704
1997-11-03 07:59:38 C 01 33 30.60 +04 10 12.9 b 704
1997-11-03 08:22:47 C 01 33 28.51 +04 09 22.3 b 704
1997-11-03 08:46:30 C 01 33 26.42 +04 08 29.1 b 704
1997-11-03 11:41:16 C 01 33 12.94 +04 02 32.4 z 422
1997-11-03 11:42:50 C 01 33 12.82 +04 02 29.1 z 422
1997-11-03 11:44:24 C 01 33 12.66 +04 02 25.6 z 422
1997-11-04 22:48:07 C 01 30 19.95 +02 46 08.3 557
1997-11-04 22:50:55 C 01 30 19.72 +02 46 02.2 557
1997-11-04 22:53:38 C 01 30 19.48 +02 45 56.4 557
1997-11-04 23:16:09 C 01 30 17.64 +02 45 08.9 046
1997-11-04 23:18:23 C 01 30 17.44 +02 45 04.0 046
1997-11-04 23:20:03 C 01 30 17.32 +02 45 00.6 046
1997-11-05 11:34:27 C 01 29 20.31 +02 19 38.8 426
1997-11-05 11:40:35 C 01 29 19.79 +02 19 26.2 426
1997-11-05 11:46:46 C 01 29 19.27 +02 19 12.9 426
1997-11-05 11:49:01 C 01 29 19.05 +02 18 42.7 z 402
1997-11-05 11:52:02 C 01 29 18.80 +02 18 36.3 z 402
1997-11-05 11:55:01 C 01 29 18.56 +02 18 30.1 z 402
1997-11-05 13:33:09 C 01 29 10.34 +02 15 04.2 z 381
1997-11-05 13:35:58 C 01 29 10.10 +02 14 58.2 z 381
1997-11-05 13:38:47 C 01 29 09.86 +02 14 52.2 z 381
1997-11-09 05:51:07 C 01 22 45.42 -00 41 18.0 658
1997-11-09 05:53:19 C 01 22 45.26 -00 41 22.0 658
1997-11-09 06:09:17 C 01 22 44.11 -00 41 52.3 658
1997-11-09 07:12:07 C 01 22 39.31 -00 43 45.7 a 696
1997-11-09 07:13:35 C 01 22 39.21 -00 43 48.5 a 696