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
2025-09-22 17:58:43 C 22 36 48.41 +40 11 18.8 Z L04
2025-09-22 21:38:08 C 22 36 35.832 +40 01 46.78 q S89
2025-09-22 21:39:40 C 22 36 35.762 +40 01 42.78 q S89
2025-09-22 21:41:11 C 22 36 35.669 +40 01 39.22 q S89
2025-09-22 21:42:42 C 22 36 35.575 +40 01 35.00 q S89
2025-09-22 21:50:09 C 22 36 35.179 +40 01 15.24 q S89
2025-09-23 09:04:51 C 22 36 03.566 +39 31 51.71 V T08
2025-09-23 09:08:50 C 22 36 03.336 +39 31 41.16 V T08
2025-09-23 09:20:41 C 22 36 02.707 +39 31 09.48 V T05
2025-09-23 09:31:27 C 22 36 02.074 +39 30 41.29 V T08
2025-09-23 09:40:25 C 22 36 01.606 +39 30 17.03 V T05
2025-09-23 09:53:43 C 22 36 00.869 +39 29 41.68 V T05
2025-09-23 21:40:01 B 22 35 29.323 +38 58 22.66 V R51
2025-09-23 22:01:22 B 22 35 28.171 +38 57 26.06 V R51
2025-09-23 22:37:11 B 22 35 26.318 +38 55 50.59 V R51
2025-09-25 00:15:51 C 22 34 19.272 +37 47 18.78 V R17
2025-09-25 00:35:22 C 22 34 18.319 +37 46 26.00 V R17
2025-09-25 00:54:53 C 22 34 17.354 +37 45 33.08 V R17
2025-09-25 01:14:19 C 22 34 16.411 +37 44 40.24 V R17
2025-09-25 06:00:06 C 22 34 05.434 +37 31 49.87 V 703
2025-09-25 06:04:39 C 22 34 05.210 +37 31 37.80 V 703
2025-09-25 06:09:11 C 22 34 04.980 +37 31 25.60 V 703
2025-09-25 06:13:10 C 22 34 04.782 +37 31 14.52 V 703
2025-09-25 09:18:14 C 22 33 57.274 +37 22 59.92 V T05
2025-09-25 09:23:28 C 22 33 57.022 +37 22 45.91 V T05
2025-09-25 09:33:37 C 22 33 56.525 +37 22 18.26 V T05
2025-09-25 09:50:47 C 22 33 55.694 +37 21 31.57 V T05
2025-09-25 22:33:16 B 22 33 26.818 +36 47 03.80 X J51
2025-09-25 22:45:45 B 22 33 26.234 +36 46 30.07 X J51
2025-09-25 22:57:06 B 22 33 25.380 +36 45 54.54 V R51
2025-09-25 22:58:11 B 22 33 25.649 +36 45 56.30 X J51
2025-09-25 23:11:09 B 22 33 24.715 +36 45 15.55 V R51
2025-09-25 23:25:45 B 22 33 24.055 +36 44 35.59 V R51
2025-09-26 21:54:38 B 22 32 35.866 +35 43 24.92 X J51
2025-09-26 22:05:56 B 22 32 35.390 +35 42 54.43 X J51
2025-09-26 22:17:13 B 22 32 34.915 +35 42 23.87 X J51
2025-09-27 21:21:29 B 22 31 49.325 +34 39 06.30 X J51
2025-09-27 21:31:45 B 22 31 48.924 +34 38 38.62 X J51
2025-09-27 21:42:01 B 22 31 48.538 +34 38 10.93 X J51
2025-09-27 23:18:24 C 22 31 44.314 +34 33 35.46 Z C23
2025-09-28 00:17:54 C 22 31 42.185 +34 30 50.58 Z C23
2025-09-28 01:03:57 C 22 31 40.594 +34 28 43.03 Z C23
2025-09-28 23:12:27 B 22 31 03.365 +33 28 05.20 X X76
2025-09-28 23:16:41 B 22 31 03.235 +33 27 53.60 X X76
2025-09-28 23:20:36 B 22 31 03.122 +33 27 42.73 X X76
2025-09-29 08:16:58 C 22 30 47.506 +33 02 52.08 V T05
2025-09-29 08:41:04 C 22 30 46.666 +33 01 45.37 V T05
2025-09-29 08:55:42 C 22 30 46.162 +33 01 04.73 V T05
2025-09-29 20:10:48 B 22 30 29.342 +32 29 47.62 V 160
2025-09-29 20:14:43 B 22 30 29.210 +32 29 36.78 V 160