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
2024-11-05 19:26:48 C 01 39 25.98 +01 47 41.2 X G02
2024-11-06 18:42:50 C 01 37 30.219 +00 59 11.32 O18
2024-11-06 18:44:48 C 01 37 30.051 +00 59 07.27 O18
2024-11-06 18:57:14 C 01 37 30.38 +00 58 38.8 X G02
2024-11-06 19:02:54 C 01 37 29.90 +00 58 27.4 X G02
2024-11-06 19:08:35 C 01 37 29.42 +00 58 15.1 X G02
2024-11-06 21:14:21 B 01 37 18.917 +00 53 57.16 V 160
2024-11-06 21:20:32 B 01 37 18.312 +00 53 46.03 V 160
2024-11-06 21:26:21 B 01 37 17.875 +00 53 33.18 V 160
2024-11-07 06:27:31 C 01 36 34.333 +00 35 09.74 V 703
2024-11-07 06:30:46 C 01 36 34.045 +00 35 02.83 V 703
2024-11-07 06:34:01 C 01 36 33.782 +00 34 56.24 V 703
2024-11-07 06:37:17 C 01 36 33.509 +00 34 49.73 V 703
2024-11-07 18:00:29 C 01 35 39.437 +00 11 45.40 O18
2024-11-07 18:02:59 C 01 35 39.248 +00 11 40.63 O18
2024-11-07 18:05:29 C 01 35 39.031 +00 11 35.44 O18
2024-11-08 13:37:08 C 01 34 09.970 -00 26 50.39 V P07
2024-11-08 14:37:08 C 01 34 05.071 -00 28 48.14 V P07
2024-11-08 15:20:25 C 01 34 01.522 -00 30 13.82 V P07
2024-11-08 16:06:04 C 01 33 57.802 -00 31 42.96 V P07
2024-11-08 16:06:13 C 01 33 57.797 -00 31 43.03 V P07
2024-11-09 03:39:28 C 01 33 06.305 -00 54 09.07 V W68
2024-11-09 03:44:02 C 01 33 05.945 -00 54 17.75 V W68
2024-11-09 04:23:16 C 01 33 02.820 -00 55 33.71 V W68
2024-11-09 04:35:08 C 01 33 01.882 -00 55 56.42 V W68
2024-11-09 05:48:09 C 01 32 56.994 -00 58 41.45 V 703
2024-11-09 05:51:25 C 01 32 56.713 -00 58 47.57 V 703
2024-11-09 05:54:41 C 01 32 56.454 -00 58 53.87 V 703
2024-11-09 05:57:59 C 01 32 56.202 -00 59 00.17 V 703
2024-11-09 18:15:07 C 01 32 03.20 -01 22 34.3 X G02
2024-11-09 18:21:23 C 01 32 02.73 -01 22 46.5 X G02
2024-11-09 18:27:24 C 01 32 02.27 -01 22 57.7 X G02
2024-11-10 09:04:23 C 01 30 58.997 -01 50 16.91 V T05
2024-11-10 09:09:36 C 01 30 58.596 -01 50 26.66 V T05
2024-11-10 09:44:03 C 01 30 55.961 -01 51 30.85 V T05
2024-11-10 09:52:31 C 01 30 55.315 -01 51 46.33 V T05
2024-11-10 18:52:48 C 01 30 18.63 -02 08 33.7 X G02
2024-11-10 18:58:23 C 01 30 18.26 -02 08 44.3 X G02
2024-11-10 19:03:58 C 01 30 17.85 -02 08 54.9 X G02
2024-11-16 10:51:05 C 01 22 04.903 -05 55 02.14 V T08
2024-11-16 11:06:29 C 01 22 04.051 -05 55 25.28 V T08
2024-11-16 11:11:51 C 01 22 03.742 -05 55 33.24 V T08
2024-11-16 11:21:56 C 01 22 03.170 -05 55 48.40 V T08
2024-11-17 03:29:08 C 01 21 15.120 -06 19 17.08 V W68
2024-11-17 03:33:42 C 01 21 14.878 -06 19 23.30 V W68
2024-11-17 03:41:30 C 01 21 14.410 -06 19 34.82 V W68
2024-11-17 03:53:13 C 01 21 13.858 -06 19 53.15 V W68
2024-11-17 03:59:45 C 01 21 13.438 -06 20 01.46 V W68
2024-11-18 07:54:46 C 01 19 53.605 -06 59 57.30 V 703
2024-11-18 07:58:01 C 01 19 53.411 -07 00 01.76 V 703