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
2025-09-16 00:47:19 C 22 46 33.59 +46 48 05.8 X C40
2025-09-16 00:49:32 C 22 46 33.45 +46 48 01.0 X C40
2025-09-16 00:51:44 C 22 46 33.26 +46 47 55.7 X C40
2025-09-16 00:53:55 C 22 46 33.09 +46 47 50.6 X C40
2025-09-16 01:52:13 C 22 46 29.575 +46 45 50.72 V R17
2025-09-16 02:11:46 C 22 46 28.010 +46 45 05.40 V R17
2025-09-16 02:31:20 C 22 46 26.443 +46 44 19.97 V R17
2025-09-16 02:50:53 C 22 46 24.886 +46 43 34.72 V R17
2025-09-17 09:14:00 C 22 44 19.378 +45 33 05.33 V T08
2025-09-17 10:01:33 C 22 44 15.696 +45 31 12.72 V T08
2025-09-17 10:04:52 C 22 44 15.449 +45 31 04.87 V T08
2025-09-17 10:05:32 C 22 44 15.391 +45 31 03.36 V T08
2025-09-17 11:11:53 C 22 44 10.298 +45 28 24.85 V T08
2025-09-17 21:21:55 B 22 43 31.375 +45 04 04.37 Z R68
2025-09-17 21:23:53 B 22 43 31.262 +45 03 59.80 Z R68
2025-09-17 21:25:31 B 22 43 31.121 +45 03 55.98 Z R68
2025-09-18 20:42:37 B 22 42 01.31 +44 07 41.9 V 130
2025-09-18 20:46:08 B 22 42 01.06 +44 07 33.5 V 130
2025-09-18 20:50:10 B 22 42 00.79 +44 07 23.7 V 130
2025-09-18 20:54:11 B 22 42 00.50 +44 07 14.0 V 130
2025-09-18 21:44:36 C 22 41 57.062 +44 05 08.88 Z C23
2025-09-18 22:33:55 B 22 41 53.842 +44 03 10.51 Z R68
2025-09-18 22:34:41 B 22 41 53.796 +44 03 08.46 Z R68
2025-09-18 22:35:28 B 22 41 53.734 +44 03 06.70 Z R68
2025-09-19 00:24:02 C 22 41 46.195 +43 58 37.56 Z C23
2025-09-19 00:40:04 B 22 41 44.85 +43 58 00.2 V R99
2025-09-19 00:43:25 B 22 41 44.62 +43 57 51.9 V R99
2025-09-19 00:46:46 B 22 41 44.47 +43 57 42.5 V R99
2025-09-19 18:57:56 C 22 40 40.282 +43 12 44.71 Z C23
2025-09-19 20:18:42 C 22 40 35.122 +43 09 26.32 Z C23
2025-09-19 20:50:04 B 22 40 32.947 +43 08 08.34 V L65
2025-09-19 20:54:15 B 22 40 32.683 +43 07 57.86 V L65
2025-09-19 20:58:26 B 22 40 32.407 +43 07 47.57 V L65
2025-09-19 21:11:12 B 22 40 31.58 +43 07 19.7 V R99
2025-09-19 21:15:44 B 22 40 31.27 +43 07 08.7 V R99
2025-09-19 21:20:00 B 22 40 30.99 +43 06 57.6 V R99
2025-09-19 21:29:55 C 22 40 30.439 +43 06 30.38 Z C23
2025-09-20 01:20:00 B 22 40 17.318 +42 56 55.50 W X04
2025-09-20 01:28:22 B 22 40 16.786 +42 56 34.19 W X04
2025-09-20 01:35:35 B 22 40 16.291 +42 56 16.48 W X04
2025-09-21 02:19:35 B 22 38 51.963 +41 53 50.07 X H89
2025-09-21 03:26:01 B 22 38 47.841 +41 51 01.41 X H89
2025-09-21 04:36:40 B 22 38 43.497 +41 48 00.83 X H89
2025-09-21 18:40:39 B 22 37 59.784 +41 11 51.90 V 160
2025-09-21 18:44:55 B 22 37 59.542 +41 11 40.96 V 160
2025-09-21 18:49:24 B 22 37 59.287 +41 11 29.69 V 160
2025-09-21 19:33:09 C 22 37 56.736 +41 09 35.10 Z C23
2025-09-21 20:24:54 C 22 37 53.746 +41 07 22.73 Z C23
2025-09-22 17:47:48 C 22 36 48.98 +40 11 47.3 Z L04
2025-09-22 17:53:19 C 22 36 48.69 +40 11 32.9 Z L04