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
2010-11-12 21:59:27 C 03 27 07.16 -06 07 31.5 r J37
2010-11-12 23:20:43 C 03 26 57.74 -06 10 39.4 u A06
2010-11-12 23:26:13 C 03 26 57.11 -06 10 51.3 u A06
2010-11-12 23:30:06 C 03 26 56.65 -06 11 00.5 u A06
2010-11-14 23:05:46 C 03 21 47.19 -07 58 04.9 o 046
2010-11-14 23:06:57 C 03 21 47.05 -07 58 07.7 o 046
2010-11-14 23:09:19 C 03 21 46.80 -07 58 12.9 o 046
2010-11-14 23:10:33 C 03 21 46.65 -07 58 15.7 o 046
2010-11-14 23:14:10 C 03 21 46.25 -07 58 23.3 o 046
2010-12-03 04:30:51 C 02 39 00.97 -20 14 39.5 r 703
2010-12-03 04:43:50 C 02 38 59.89 -20 14 54.0 r 703
2010-12-03 05:09:44 C 02 38 57.69 -20 15 22.5 r 703
2010-12-14 03:12:35 C 02 23 00.63 -23 44 36.8 r 703
2010-12-14 03:21:35 C 02 23 00.20 -23 44 41.4 r 703
2010-12-14 03:30:36 C 02 22 59.77 -23 44 46.0 r 703
2010-12-14 03:39:38 C 02 22 59.30 -23 44 50.9 r 703
2011-01-05 23:52:03 S 02 16 06.90 -25 23 11.6 L C51
2011-01-05 23:52:13 S 02 16 06.92 -25 23 11.1 L C51
2011-01-06 03:02:33 S 02 16 09.58 -25 22 58.1 L C51
2011-01-06 04:37:55 S 02 16 10.98 -25 22 51.5 L C51
2011-01-06 06:13:05 S 02 16 12.34 -25 22 46.5 L C51
2011-01-06 07:48:14 S 02 16 13.70 -25 22 37.6 L C51
2011-01-06 09:23:24 S 02 16 15.10 -25 22 30.6 L C51
2011-01-06 09:23:36 S 02 16 15.11 -25 22 31.3 L C51
2011-01-06 10:58:46 S 02 16 16.517 -25 22 24.67 L C51
2011-01-06 12:33:56 S 02 16 17.97 -25 22 18.0 L C51
2011-01-06 14:09:06 S 02 16 19.40 -25 22 09.3 L C51
2011-01-06 14:09:16 S 02 16 19.39 -25 22 11.0 L C51
2011-01-06 15:44:27 S 02 16 20.74 -25 22 03.1 L C51
2011-01-06 17:19:37 S 02 16 22.241 -25 21 55.91 L C51
2011-01-06 20:30:08 S 02 16 25.236 -25 21 39.92 L C51
2011-01-06 23:40:28 S 02 16 28.17 -25 21 25.4 L C51
2011-01-06 23:40:39 S 02 16 28.24 -25 21 25.6 L C51
2011-01-07 02:51:00 S 02 16 31.30 -25 21 09.7 L C51
2011-01-27 11:32:53 C 02 31 51.01 -23 52 48.8 r E12
2011-06-22 09:05:59 C 00 37 37.00 +41 55 55.4 18.3 c 704
2011-06-22 09:20:35 C 00 37 38.00 +41 56 01.9 18.5 c 704
2011-06-22 09:35:04 C 00 37 38.93 +41 56 09.0 18.5 c 704
2011-06-22 10:04:28 C 00 37 40.89 +41 56 25.2 18.7 c 704
2011-07-20 10:16:20 C 01 24 04.32 +46 15 11.8 18.6 c 704
2011-07-20 10:31:13 C 01 24 05.03 +46 15 16.6 18.6 c 704
2011-07-20 10:46:05 C 01 24 06.06 +46 15 20.7 18.8 c 704
2011-09-12 14:10:24 C 01 42 51.11 +44 54 05.2 o 300
2011-09-12 14:11:46 C 01 42 51.02 +44 54 04.1 o 300
2011-09-12 14:12:38 C 01 42 50.97 +44 54 03.4 o 300
2011-09-12 14:13:31 C 01 42 50.90 +44 54 02.7 o 300
2011-09-12 14:14:23 C 01 42 50.86 +44 54 01.7 o 300
2011-09-12 14:15:16 C 01 42 50.81 +44 54 01.1 o 300
2011-09-12 14:16:09 C 01 42 50.75 +44 54 00.4 o 300
2011-09-12 14:17:01 C 01 42 50.67 +44 54 00.2 o 300