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
2025-11-17 18:43:37 C 23 05 38.242 -03 26 15.65 V M22
2025-11-17 18:52:45 C 23 05 38.789 -03 26 21.73 V M22
2025-11-17 19:07:07 C 23 05 39.677 -03 26 32.46 V M22
2025-11-20 01:00:14 C 23 09 10.224 -04 03 43.31 V W68
2025-11-20 01:08:11 C 23 09 10.740 -04 03 48.20 V W68
2025-11-20 01:13:24 C 23 09 11.074 -04 03 51.52 V W68
2025-11-20 01:27:50 C 23 09 11.966 -04 04 01.52 V W68
2025-11-20 19:24:39 C 23 10 23.352 -04 15 31.43 V M22
2025-11-20 19:30:04 C 23 10 23.693 -04 15 35.14 V M22
2025-11-20 19:31:17 C 23 10 24.08 -04 15 50.5 V Z45
2025-11-20 19:39:09 C 23 10 24.254 -04 15 40.90 V M22
2025-11-20 19:48:27 C 23 10 25.15 -04 16 01.4 V Z45
2025-11-20 19:54:49 C 23 10 25.238 -04 15 50.51 V M22
2025-11-20 20:05:37 C 23 10 26.30 -04 16 11.8 V Z45
2025-11-20 20:22:47 C 23 10 27.29 -04 16 22.8 V Z45
2025-11-21 20:27:37 B 23 12 04.044 -04 31 09.95 q Y84
2025-11-21 20:32:07 B 23 12 04.349 -04 31 12.61 q Y84
2025-11-21 20:36:32 B 23 12 04.634 -04 31 15.42 q Y84
2025-11-22 16:56:14 C 23 13 27.547 -04 43 08.15 Z C23
2025-11-22 17:56:25 C 23 13 31.555 -04 43 43.54 Z C23
2025-11-27 02:16:16 C 23 20 45.805 -05 36 49.07 V 703
2025-11-27 02:19:36 C 23 20 46.064 -05 36 50.47 V 703
2025-11-27 02:22:57 C 23 20 46.306 -05 36 52.06 V 703
2025-11-27 02:26:17 C 23 20 46.489 -05 36 53.24 V 703
2025-12-05 11:59:44 C 23 35 30.68 -06 47 39.6 V D29
2025-12-05 12:14:46 C 23 35 31.81 -06 47 43.1 V D29
2025-12-05 12:29:48 C 23 35 32.91 -06 47 47.2 V D29
2025-12-06 12:16:48 C 23 37 20.68 -06 53 42.9 V D29
2025-12-06 12:33:09 C 23 37 21.89 -06 53 46.7 V D29
2025-12-06 12:49:31 C 23 37 23.07 -06 53 51.1 V D29
2025-12-07 05:01:16 C 23 38 37.176 -06 57 35.10 X F52
2025-12-07 05:12:28 C 23 38 37.990 -06 57 37.66 X F52
2025-12-07 05:23:49 C 23 38 38.824 -06 57 40.25 X F52
2025-12-07 05:35:07 C 23 38 39.648 -06 57 42.85 X F52
2025-12-13 02:01:11 C 23 49 31.512 -07 22 02.32 V G96
2025-12-13 02:09:22 C 23 49 32.149 -07 22 03.72 V G96
2025-12-13 02:17:34 C 23 49 32.758 -07 22 04.40 V G96
2025-12-13 02:25:44 C 23 49 33.384 -07 22 05.30 V G96