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
2012-07-23 20:42:17 C 15 41 36.79 +79 23 47.7 c A24
2012-07-23 20:43:19 C 15 41 37.28 +79 23 46.8 c A24
2012-07-23 21:05:47 C 15 41 51.57 +79 23 29.8 c A24
2012-07-23 21:29:18 C 15 42 06.45 +79 23 11.9 c A24
2012-07-23 21:51:46 C 15 42 20.91 +79 22 55.4 c A24
2012-07-23 21:52:49 C 15 42 21.52 +79 22 54.6 c A24
2012-07-26 20:48:58 C 16 24 43.07 +78 21 28.9 c A24
2012-07-26 20:50:00 C 16 24 43.57 +78 21 28.1 c A24
2012-07-26 21:57:06 C 16 25 18.16 +78 20 17.9 c A24
2012-07-26 21:58:09 C 16 25 18.56 +78 20 17.1 c A24
2012-07-31 05:26:45 C 17 12 36.46 +76 20 11.3 17.1 c 704
2012-07-31 05:43:35 C 17 12 42.48 +76 19 48.7 17.4 c 704
2012-07-31 06:00:25 C 17 12 48.73 +76 19 26.0 17.3 c 704
2012-07-31 06:17:24 C 17 12 54.97 +76 19 03.3 17.5 c 704
2012-08-01 05:38:28 C 17 21 35.76 +75 48 12.0 u H21
2012-08-01 05:41:58 C 17 21 36.97 +75 48 07.0 u H21
2012-08-01 05:45:02 C 17 21 38.02 +75 48 02.8 u H21
2012-08-01 05:48:32 C 17 21 39.17 +75 47 57.9 u H21
2012-08-01 05:51:34 C 17 21 40.18 +75 47 53.5 u H21
2012-08-01 05:55:02 C 17 21 41.39 +75 47 48.7 u H21
2012-08-01 05:57:38 C 17 21 42.32 +75 47 45.0 u H21
2012-08-02 03:59:38 C 17 29 22.69 +75 17 45.8 t H21
2012-08-02 04:06:26 C 17 29 24.79 +75 17 36.2 t H21
2012-08-02 04:13:13 C 17 29 26.92 +75 17 26.6 t H21
2012-08-02 04:19:22 C 17 29 28.86 +75 17 17.8 t H21
2012-08-06 20:48:12 C 18 01 38.00 +72 30 33.4 u B38
2012-08-06 20:53:19 C 18 01 39.16 +72 30 25.2 u B38
2012-08-06 20:57:52 C 18 01 40.25 +72 30 18.7 u B38
2012-08-06 21:03:06 C 18 01 41.39 +72 30 09.3 u B38
2012-08-06 21:08:17 C 18 01 42.49 +72 30 01.7 u B38
2012-08-09 23:13:51 C 18 18 08.93 +70 29 39.4 u I56
2012-08-09 23:34:48 C 18 18 12.91 +70 29 03.6 u I56
2012-08-09 23:54:51 C 18 18 16.74 +70 28 28.8 u I56
2012-08-12 20:02:21 C 18 31 08.66 +68 30 56.0 u C01
2012-08-12 20:04:13 C 18 31 08.98 +68 30 51.2 u C01
2012-08-12 20:06:08 C 18 31 09.29 +68 30 47.7 u C01
2012-08-12 20:08:02 C 18 31 09.60 +68 30 44.3 u C01
2012-08-18 20:48:12 C 18 53 26.99 +63 59 41.2 u 160
2012-08-18 20:51:39 C 18 53 27.43 +63 59 34.3 u 160
2012-08-18 20:55:07 C 18 53 27.87 +63 59 27.4 u 160
2012-08-19 20:43:39 C 18 56 40.37 +63 12 01.5 u 160
2012-08-19 20:47:12 C 18 56 40.81 +63 11 54.4 u 160
2012-08-19 20:51:13 C 18 56 41.31 +63 11 46.3 u 160
2012-08-20 17:54:20 C 18 59 26.34 +62 29 04.6 r 168
2012-08-20 18:42:55 C 18 59 32.16 +62 27 24.5 r 168
2012-08-20 21:38:45 C 18 59 53.79 +62 21 18.7 r 168
2012-08-23 01:45:48 C 19 06 24.85 +60 33 08.4 u I42
2012-08-23 01:50:39 C 19 06 25.39 +60 32 58.2 u I42
2012-08-25 21:09:07 C 19 14 16.71 +58 07 23.6 u B38
2012-08-25 21:18:12 C 19 14 17.63 +58 07 03.7 u B38