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
2025-10-06 18:47:05 B 22 28 06.48 +24 53 00.0 X L76
2025-10-06 18:53:20 B 22 28 06.38 +24 52 42.5 X L76
2025-10-06 20:50:42 C 22 28 05.97 +24 47 29.2 V G17
2025-10-06 20:55:38 C 22 28 05.93 +24 47 16.2 V G17
2025-10-06 21:00:34 C 22 28 05.83 +24 47 03.3 V G17
2025-10-06 21:04:32 B 22 28 05.91 +24 46 52.5 X M54
2025-10-06 21:10:41 B 22 28 05.86 +24 46 35.7 X M54
2025-10-06 21:16:51 B 22 28 05.79 +24 46 19.3 X M54
2025-10-07 19:34:53 B 22 28 03.739 +23 46 56.71 X J51
2025-10-07 19:45:47 B 22 28 03.658 +23 46 28.92 X J51
2025-10-07 19:56:41 B 22 28 03.538 +23 46 00.01 X J51
2025-10-07 21:22:35 B 22 28 02.41 +23 42 07.7 X M54
2025-10-07 21:26:43 C 22 28 02.962 +23 42 02.66 V R17
2025-10-07 21:28:45 B 22 28 02.36 +23 41 51.2 X M54
2025-10-07 21:34:54 B 22 28 02.33 +23 41 35.1 X M54
2025-10-07 21:52:02 C 22 28 02.774 +23 40 55.88 V R17
2025-10-07 22:11:35 C 22 28 02.647 +23 40 04.22 V R17
2025-10-07 22:31:09 C 22 28 02.506 +23 39 12.42 V R17
2025-10-08 04:54:04 C 22 28 02.276 +23 22 18.48 V G96
2025-10-08 05:02:16 C 22 28 02.226 +23 21 56.77 V G96
2025-10-08 05:10:28 C 22 28 02.172 +23 21 35.24 V G96
2025-10-08 05:18:40 C 22 28 02.118 +23 21 13.54 V G96
2025-10-08 19:30:08 B 22 28 04.037 +22 43 54.80 X J51
2025-10-08 19:41:13 B 22 28 03.970 +22 43 25.79 X J51
2025-10-08 19:55:50 B 22 28 03.876 +22 42 48.28 X J51
2025-10-08 21:24:58 C 22 28 03.547 +22 38 55.90 V R17
2025-10-08 21:50:25 C 22 28 03.432 +22 37 49.33 V R17
2025-10-08 22:09:56 C 22 28 03.346 +22 36 58.61 V R17
2025-10-08 22:29:29 C 22 28 03.245 +22 36 07.13 V R17
2025-10-09 19:07:18 B 22 28 07.370 +21 42 20.66 Z K35
2025-10-09 19:09:13 B 22 28 07.385 +21 42 15.62 Z K35
2025-10-09 19:11:08 B 22 28 07.406 +21 42 10.76 Z K35
2025-10-09 19:13:03 B 22 28 07.390 +21 42 05.76 Z K35
2025-10-09 19:14:58 B 22 28 07.392 +21 42 00.72 Z K35
2025-10-09 19:16:53 B 22 28 07.375 +21 41 55.72 Z K35
2025-10-10 19:51:59 B 22 28 15.185 +20 38 55.64 V 160
2025-10-10 19:55:48 B 22 28 15.187 +20 38 45.96 V 160
2025-10-10 19:59:31 B 22 28 15.202 +20 38 36.56 V 160
2025-10-10 21:06:39 C 22 28 15.334 +20 35 43.04 q L05
2025-10-10 21:25:37 C 22 28 15.382 +20 34 54.41 q L05
2025-10-10 21:39:52 C 22 28 15.420 +20 34 18.26 q L05
2025-10-10 21:58:51 C 22 28 15.439 +20 33 30.24 q L05
2025-10-11 23:39:44 C 22 28 27.78 +19 28 50.6 V R85
2025-10-11 23:47:04 C 22 28 27.82 +19 28 32.2 V R85
2025-10-11 23:54:07 C 22 28 27.86 +19 28 14.5 V R85
2025-10-12 02:51:14 B 22 28 30.067 +19 21 19.76 X X24
2025-10-12 03:15:12 B 22 28 30.170 +19 20 20.00 X X24
2025-10-12 03:38:14 B 22 28 30.230 +19 19 22.40 X X24
2025-10-12 08:38:59 C 22 28 33.569 +19 06 38.88 V T05
2025-10-12 08:44:15 C 22 28 33.588 +19 06 25.78 V T05