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
2025-07-04 03:09:03 C 00 55 41.110 +65 00 55.04 V R17
2025-07-08 01:43:38 C 00 50 07.987 +64 56 38.40 V R17
2025-07-08 02:04:52 C 00 50 06.826 +64 56 39.23 V R17
2025-07-08 02:32:34 C 00 50 05.215 +64 56 39.80 V R17
2025-07-08 02:53:48 C 00 50 04.020 +64 56 40.42 V R17
2025-07-09 13:28:03 C 00 48 18.986 +64 55 25.72 V T08
2025-07-09 13:32:10 C 00 48 18.862 +64 55 26.51 V T08
2025-07-09 13:39:50 C 00 48 18.355 +64 55 26.04 V T08
2025-07-09 14:12:39 C 00 48 16.339 +64 55 26.08 V T08
2025-07-09 21:43:04 C 00 47 55.505 +64 54 46.08 X M26
2025-07-09 21:49:08 C 00 47 55.363 +64 54 46.76 X M26
2025-07-21 23:07:30 B 00 36 04.762 +64 46 02.93 W Z80
2025-07-21 23:17:31 B 00 36 04.402 +64 46 02.71 W Z80
2025-07-21 23:28:27 B 00 36 03.950 +64 46 03.00 W Z80
2025-07-23 10:42:09 C 00 34 38.510 +64 44 50.60 V T05
2025-07-23 10:50:00 C 00 34 37.997 +64 44 50.42 V T05
2025-07-23 10:56:52 C 00 34 37.834 +64 44 51.00 V T05
2025-07-23 11:04:58 C 00 34 37.337 +64 44 50.71 V T05
2025-07-25 23:56:44 C 00 32 00.895 +64 41 43.80 V R17
2025-07-26 00:24:06 C 00 31 59.614 +64 41 44.30 V R17
2025-07-26 00:45:39 C 00 31 58.598 +64 41 44.09 V R17
2025-07-26 01:07:16 C 00 31 57.530 +64 41 44.27 V R17
2025-07-27 10:35:03 C 00 30 26.093 +64 39 40.64 V T08
2025-07-27 10:56:10 C 00 30 24.912 +64 39 40.79 V T08
2025-07-27 11:12:04 C 00 30 24.000 +64 39 40.32 V T08
2025-07-27 11:17:27 C 00 30 23.746 +64 39 40.46 V T08
2025-07-31 12:29:02 C 00 25 30.086 +64 31 02.60 V T05
2025-07-31 12:31:40 C 00 25 29.882 +64 31 02.50 V T05
2025-07-31 12:51:29 C 00 25 28.512 +64 31 00.80 V T05
2025-07-31 23:34:21 C 00 24 55.205 +64 29 32.42 V R17
2025-07-31 23:55:48 C 00 24 54.007 +64 29 31.49 V R17
2025-08-01 00:23:00 C 00 24 52.354 +64 29 30.05 V R17
2025-08-01 00:44:26 C 00 24 51.082 +64 29 28.82 V R17
2025-08-02 13:08:22 C 00 22 45.710 +64 24 55.98 V T08
2025-08-02 13:59:09 C 00 22 42.206 +64 24 49.64 V T08
2025-08-02 14:17:26 C 00 22 40.721 +64 24 47.09 V T08
2025-08-02 14:21:28 C 00 22 40.534 +64 24 46.58 V T08
2025-08-06 11:41:01 C 00 16 51.216 +64 08 31.56 V T08
2025-08-06 11:45:02 C 00 16 50.863 +64 08 30.77 V T08
2025-08-06 12:02:45 C 00 16 49.560 +64 08 26.99 V T08
2025-08-06 12:52:04 C 00 16 45.576 +64 08 17.99 V T08
2025-08-08 11:47:52 C 00 13 29.998 +63 57 27.65 V T05
2025-08-08 11:50:30 C 00 13 29.950 +63 57 26.64 V T05
2025-08-08 12:22:34 C 00 13 27.168 +63 57 20.34 V T05
2025-08-08 12:26:39 C 00 13 26.827 +63 57 18.83 V T05
2025-08-18 23:01:54 C 23 52 12.516 +62 16 53.58 Z C23
2025-08-18 23:26:40 C 23 52 09.974 +62 16 40.58 Z C23
2025-08-21 10:36:09 C 23 46 18.588 +61 39 18.58 V T08
2025-08-21 10:46:09 C 23 46 17.472 +61 39 11.52 V T08
2025-08-21 11:06:13 C 23 46 15.194 +61 38 58.42 V T08