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
1997-11-09 07:14:52 C 01 22 39.11 -00 43 51.0 a 696
1997-11-09 11:55:11 C 01 22 21.32 -00 52 40.5 z 897
1997-11-09 12:00:30 C 01 22 20.93 -00 52 49.6 z 897
1997-11-09 12:04:20 C 01 22 20.64 -00 52 57.3 z 897
1997-11-10 04:51:43 C 01 21 14.69 -01 24 09.5 z 700
1997-11-10 05:02:34 C 01 21 14.01 -01 24 30.3 z 700
1997-11-10 05:09:25 C 01 21 13.53 -01 24 42.0 z 700
1997-11-11 05:57:40 C 01 19 40.44 -02 09 31.6 658
1997-11-11 06:02:01 C 01 19 40.16 -02 09 39.8 658
1997-11-11 06:16:55 C 01 19 39.14 -02 10 06.1 658
1997-11-18 13:55:52 C 01 10 57.38 -06 42 46.4 z 897
1997-11-18 14:05:53 C 01 10 57.01 -06 43 00.7 z 897
1997-11-18 21:55:55 C 01 10 39.56 -06 53 25.1 z 587
1997-11-18 22:00:55 C 01 10 39.35 -06 53 31.3 z 587
1997-11-19 12:55:06 C 01 10 07.11 -07 12 48.9 z 402
1997-11-19 12:59:08 C 01 10 06.96 -07 12 54.3 z 402
1997-11-19 13:03:07 C 01 10 06.83 -07 12 58.8 z 402
1997-11-21 21:00:32 C 01 08 20.55 -08 20 55.8 046
1997-11-21 21:01:30 C 01 08 20.52 -08 20 57.1 046
1997-11-21 21:02:38 C 01 08 20.48 -08 20 59.0 046
1997-11-24 12:51:00 C 01 06 47.47 -09 29 42.0 360
1997-11-24 13:05:14 C 01 06 47.13 -09 29 56.4 360
1997-11-24 13:11:00 C 01 06 47.00 -09 30 01.9 360
1997-12-06 20:37:26 C 01 05 34.74 -13 05 37.9 z 587
1997-12-06 21:06:06 C 01 05 34.94 -13 05 49.8 z 587
1997-12-19 17:51:42 C 01 12 51.68 -14 38 51.7 046
1997-12-19 17:56:51 C 01 12 51.80 -14 38 52.4 046
1997-12-19 18:03:23 C 01 12 52.10 -14 38 53.6 046
1997-12-21 11:25:29 C 01 14 21.34 -14 44 04.1 360
1997-12-21 11:32:29 C 01 14 21.56 -14 44 04.8 360
1997-12-21 11:39:00 C 01 14 21.81 -14 44 05.1 360
1997-12-30 04:05:05 C 01 23 25.59 -14 50 40.2 z 711
1997-12-30 04:24:13 C 01 23 26.50 -14 50 39.7 z 711
1997-12-31 03:27:14 C 01 24 35.54 -14 49 38.7 z 711
1997-12-31 03:46:10 C 01 24 36.44 -14 49 37.3 z 711
1998-01-16 11:05:00 C 01 47 42.46 -13 53 44.6 360
1998-01-16 11:12:00 C 01 47 42.93 -13 53 43.6 360
1998-01-16 11:18:15 C 01 47 43.34 -13 53 42.4 360
1998-03-04 02:28:01 C 03 19 53.95 -07 29 52.6 z 711
1998-03-05 02:30:12 C 03 22 11.32 -07 19 06.7 z 711
1998-03-05 02:45:18 C 03 22 12.73 -07 19 00.2 z 711
1998-03-22 10:34:59 C 04 02 56.17 -03 47 19.7 360
1998-03-22 10:41:30 C 04 02 56.81 -03 47 16.9 360
1998-03-22 10:47:15 C 04 02 57.41 -03 47 12.5 360
1998-07-02 18:21:15 C 01 03 17.87 +67 43 36.5 360
1998-07-02 18:26:59 C 01 03 17.18 +67 43 36.6 360
1998-07-02 18:32:44 C 01 03 16.46 +67 43 36.2 360
1998-07-03 01:04:39 C 01 02 32.99 +67 42 49.8 557
1998-07-03 01:24:42 C 01 02 30.70 +67 42 48.5 557
1998-07-23 23:39:08 C 00 25 34.07 +66 53 22.6 c 106