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
2022-12-19 04:27:19 C 10 35 23.638 -46 04 43.72 V W68
2022-12-23 07:26:35 C 10 58 41.057 -49 40 30.68 V W68
2022-12-23 07:32:56 C 10 58 42.590 -49 40 44.58 V W68
2022-12-23 07:51:25 C 10 58 47.182 -49 41 23.39 V W68
2022-12-27 06:45:04 C 11 24 28.051 -52 50 25.04 V W68
2022-12-27 07:11:16 C 11 24 35.477 -52 51 15.59 V W68
2022-12-27 07:15:49 C 11 24 36.766 -52 51 24.48 V W68
2023-01-01 22:48:26 C 12 08 00.144 -56 39 06.62 V M22
2023-01-01 23:32:53 C 12 08 15.617 -56 40 14.27 V M22
2023-01-02 00:11:00 C 12 08 28.896 -56 41 11.62 V M22
2023-01-02 00:15:33 C 12 08 30.478 -56 41 18.42 V M22
2023-01-04 05:49:32 C 12 28 01.450 -57 53 33.68 V W68
2023-01-04 06:19:34 C 12 28 12.571 -57 54 12.78 V W68
2023-01-04 06:24:07 C 12 28 14.287 -57 54 18.36 V W68
2023-01-04 06:31:55 C 12 28 17.218 -57 54 28.69 V W68
2023-09-16 10:33:54 C 04 52 34.864 +25 42 29.52 V 703
2023-09-16 10:40:59 C 04 52 35.357 +25 42 25.63 V 703
2023-09-16 10:48:04 C 04 52 35.872 +25 42 21.89 V 703
2023-09-16 10:55:09 C 04 52 36.376 +25 42 17.06 V 703
2023-09-19 10:57:40 C 04 57 51.433 +24 56 44.02 V 703
2023-09-19 11:05:36 C 04 57 52.016 +24 56 38.80 V 703
2023-09-19 11:13:36 C 04 57 52.499 +24 56 33.83 V 703
2023-09-19 11:21:38 C 04 57 53.064 +24 56 28.39 V 703
2023-09-20 13:29:56 C 04 59 43.966 +24 38 49.99 V T05
2023-09-20 13:33:51 C 04 59 44.275 +24 38 47.33 V T05
2023-09-20 13:42:21 C 04 59 44.815 +24 38 40.78 V T05
2023-09-20 13:52:51 C 04 59 45.509 +24 38 34.37 V T05
2023-09-25 07:34:46 C 05 07 23.422 +23 14 21.91 V W68
2023-09-25 07:39:23 C 05 07 23.609 +23 14 18.92 V W68
2023-09-25 07:43:19 C 05 07 23.827 +23 14 15.22 V W68
2023-09-25 08:15:39 C 05 07 25.858 +23 13 49.66 V W68
2023-09-25 08:20:53 C 05 07 26.141 +23 13 46.27 V W68
2023-09-25 08:25:27 C 05 07 26.393 +23 13 41.84 V W68
2023-09-25 08:47:41 C 05 07 27.816 +23 13 24.42 V W68
2023-09-25 09:12:42 C 05 07 29.323 +23 13 05.09 V W68
2023-09-25 10:56:12 C 05 07 36.142 +23 11 29.40 V G96
2023-09-25 11:03:36 C 05 07 36.592 +23 11 23.57 V G96
2023-09-25 11:11:00 C 05 07 37.042 +23 11 17.70 V G96
2023-09-25 11:18:24 C 05 07 37.495 +23 11 11.87 V G96
2023-09-26 12:47:48 C 05 09 14.652 +22 50 27.85 V T05
2023-09-26 13:07:29 C 05 09 15.773 +22 50 12.12 V T05
2023-09-26 13:22:03 C 05 09 16.620 +22 49 59.77 V T05
2023-09-26 13:26:16 C 05 09 16.939 +22 49 56.39 V T05
2023-10-06 12:51:25 C 05 22 33.329 +18 59 13.99 V T05
2023-10-06 12:55:58 C 05 22 33.497 +18 59 09.49 V T05
2023-10-06 13:01:57 C 05 22 33.761 +18 59 02.90 V T05
2023-10-06 13:31:45 C 05 22 35.086 +18 58 30.25 V T05
2023-10-07 08:00:45 C 05 23 27.010 +18 37 55.24 V W68
2023-10-07 08:03:23 C 05 23 27.098 +18 37 51.96 V W68
2023-10-07 08:08:36 C 05 23 27.425 +18 37 46.99 V W68