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
2024-09-08 12:44:46 C 03 06 13.390 +38 02 28.50 V T05
2024-09-08 12:47:22 C 03 06 13.430 +38 02 27.17 V T05
2024-09-08 12:56:29 C 03 06 13.534 +38 02 23.50 V T05
2024-09-08 12:59:29 C 03 06 13.543 +38 02 22.70 V T08
2024-09-08 13:02:49 C 03 06 13.594 +38 02 21.44 V T08
2024-09-08 13:07:29 C 03 06 13.644 +38 02 19.82 V T08
2024-09-08 13:08:51 C 03 06 13.678 +38 02 18.49 V T05
2024-09-08 13:14:49 C 03 06 13.735 +38 02 16.55 V T08
2024-09-10 10:22:15 C 03 06 52.082 +37 42 55.84 V T05
2024-09-10 10:26:09 C 03 06 52.130 +37 42 54.11 V T05
2024-09-10 10:59:45 C 03 06 52.387 +37 42 39.85 V T05
2024-09-10 11:04:27 C 03 06 52.447 +37 42 37.98 V T05
2024-09-12 12:06:16 C 03 07 16.858 +37 19 06.20 V T05
2024-09-12 12:39:14 C 03 07 16.867 +37 18 49.82 V T05
2024-09-12 12:43:47 C 03 07 16.858 +37 18 47.77 V T05
2024-09-12 12:48:21 C 03 07 16.896 +37 18 45.65 V T05
2024-09-12 12:59:35 C 03 07 16.841 +37 18 39.64 V T05
2024-09-14 12:13:54 C 03 07 24.290 +36 53 11.80 V T08
2024-09-14 12:16:34 C 03 07 24.276 +36 53 10.36 V T08
2024-09-14 12:21:38 C 03 07 24.228 +36 53 07.76 V T08
2024-09-14 12:55:03 C 03 07 24.043 +36 52 49.12 V T08
2024-09-14 13:24:25 C 03 07 23.868 +36 52 32.12 V T05
2024-09-14 13:28:27 C 03 07 23.839 +36 52 30.00 V T05
2024-09-14 13:55:05 C 03 07 23.690 +36 52 14.70 V T05
2024-09-14 13:59:39 C 03 07 23.664 +36 52 12.07 V T05
2024-09-14 14:08:24 C 03 07 23.602 +36 52 07.25 V T05
2024-09-14 14:09:03 C 03 07 23.614 +36 52 06.56 V T05
2024-09-14 14:32:28 C 03 07 23.448 +36 51 53.10 V T05
2024-09-14 15:12:17 C 03 07 23.172 +36 51 30.24 V T05
2024-09-14 15:16:15 C 03 07 23.191 +36 51 27.90 V T05
2024-09-15 10:51:22 C 03 07 22.210 +36 39 57.53 V T08
2024-09-15 10:56:01 C 03 07 22.229 +36 39 55.62 V T08
2024-09-15 11:03:23 C 03 07 22.164 +36 39 51.12 V T08
2024-09-15 11:48:11 C 03 07 21.816 +36 39 25.06 V T08
2024-09-19 11:47:10 C 03 06 26.942 +35 35 25.44 V T08
2024-09-19 11:49:50 C 03 06 26.902 +35 35 23.32 V T08
2024-09-19 11:53:49 C 03 06 26.818 +35 35 20.00 V T08
2024-09-19 12:01:56 C 03 06 26.662 +35 35 14.82 V T08
2024-09-23 13:38:28 C 03 04 13.145 +34 15 27.47 V T08
2024-09-23 13:47:53 C 03 04 12.775 +34 15 18.83 V T08
2024-09-23 13:54:34 C 03 04 12.569 +34 15 12.46 V T08
2024-09-23 14:38:02 C 03 04 11.030 +34 14 33.22 V T08
2024-09-25 13:19:46 C 03 02 38.647 +33 30 22.46 V T05
2024-09-25 13:24:21 C 03 02 38.474 +33 30 17.86 V T05
2024-09-25 14:04:54 C 03 02 36.718 +33 29 37.50 V T05
2024-09-25 14:45:30 C 03 02 34.994 +33 28 56.60 V T05
2024-09-26 10:43:26 C 03 01 49.559 +33 08 40.31 V 703
2024-09-26 10:46:45 C 03 01 49.400 +33 08 37.14 V 703
2024-09-26 10:50:02 C 03 01 49.285 +33 08 34.01 V 703
2024-09-26 10:53:18 C 03 01 49.145 +33 08 30.34 V 703