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
1999-09-08 11:40:30 C 17 27 04.51 +26 35 38.5 360
1999-09-08 11:43:29 C 17 27 05.10 +26 35 34.1 360
1999-09-10 19:29:09 C 17 37 58.76 +25 09 51.6 c 118
1999-09-10 19:39:18 C 17 38 00.72 +25 09 36.3 c 118
1999-09-13 04:27:47 C 17 48 49.73 +23 41 13.5 848
1999-09-13 04:32:23 C 17 48 50.56 +23 41 06.0 848
1999-09-15 04:15:48 C 17 57 43.32 +22 26 20.0 848
1999-09-22 19:04:49 C 18 30 05.53 +17 41 23.8 c 118
1999-09-22 19:14:19 C 18 30 07.10 +17 41 09.4 c 118
1999-10-04 02:24:06 C 19 13 57.69 +11 06 49.0 18.2 b 704
1999-10-04 02:42:56 C 19 14 00.53 +11 06 23.6 18.2 b 704
1999-10-04 03:01:45 C 19 14 03.32 +11 05 57.6 18.8 b 704
1999-10-04 03:39:20 C 19 14 09.08 +11 05 06.5 19.3 b 704
2000-09-03 09:10:16 C 15 07 02.11 +08 17 13.5 413
2000-09-03 09:16:03 C 15 07 03.28 +08 17 11.2 413
2000-09-03 09:18:24 C 15 07 03.75 +08 17 09.5 413
2007-09-30 10:28:09 C 08 17 19.75 +06 03 32.3 r 448
2007-09-30 10:59:19 C 08 17 24.16 +06 03 01.6 r 448
2007-09-30 11:29:30 C 08 17 28.56 +06 02 32.4 r 448
2008-10-13 09:22:12 C 07 53 31.89 +05 01 35.2 r 448
2008-10-13 09:44:42 C 07 53 34.63 +05 01 07.6 r 448
2008-10-29 09:48:50 C 08 42 49.11 -03 53 29.6 r 448
2008-10-29 09:57:02 C 08 42 50.20 -03 53 42.4 r 448
2008-10-29 10:21:40 C 08 42 53.42 -03 54 19.4 r 448
2008-10-29 11:21:32 C 08 43 01.34 -03 55 51.4 r 703
2008-10-29 11:31:13 C 08 43 02.64 -03 56 06.7 r 703
2008-10-29 11:40:56 C 08 43 03.90 -03 56 21.4 r 703
2008-10-29 11:50:40 C 08 43 05.16 -03 56 36.7 r 703
2008-11-04 10:28:12 C 09 02 32.69 -07 43 30.7 r 448
2008-11-04 10:40:39 C 09 02 34.41 -07 43 51.5 r 448
2008-11-04 10:53:17 C 09 02 36.17 -07 44 12.1 r 448
2009-09-21 10:02:19 C 05 43 06.84 +20 15 22.2 19.9 c 704
2009-09-21 10:19:26 C 05 43 08.37 +20 15 10.3 19.9 c 704
2009-09-21 10:36:26 C 05 43 09.94 +20 14 57.6 19.8 c 704
2009-09-21 10:53:23 C 05 43 11.37 +20 14 44.2 19.4 c 704
2009-09-26 09:35:39 C 05 53 53.73 +18 38 17.4 19.2 c 704
2009-09-26 09:53:10 C 05 53 55.27 +18 38 03.5 19.0 c 704
2009-09-26 10:10:45 C 05 53 56.79 +18 37 49.5 19.3 c 704
2009-09-26 10:28:56 C 05 53 58.40 +18 37 33.1 19.5 c 704
2009-09-26 10:46:33 C 05 53 59.89 +18 37 18.1 19.3 c 704
2009-11-24 02:34:03 C 07 24 29.80 -22 59 37.8 18.5 o C20
2009-11-24 02:40:25 C 07 24 29.99 -22 59 55.2 18.5 o C20
2009-11-25 02:31:33 C 07 25 13.77 -24 07 00.7 18.2 o C20
2009-11-25 02:35:47 C 07 25 13.87 -24 07 12.5 18.2 o C20
2009-11-27 23:09:13 C 07 27 08.85 -27 22 57.7 18.1 o C20
2009-11-27 23:15:33 C 07 27 08.98 -27 23 15.9 18.3 o C20
2009-11-29 00:12:35 C 07 27 45.71 -28 35 25.9 18.0 o C20
2009-11-29 00:18:57 C 07 27 45.83 -28 35 44.3 17.8 o C20
2010-01-25 06:06:23 C 02 05 04.91 -86 24 56.0 o 844
2010-01-25 06:10:58 C 02 04 52.77 -86 24 56.5 o 844