2012 ST9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6628108819 ± 6.38e-08
Semi-major axis (a)1.9602271361 AU ± 2.87e-09
Inclination (i)7.69219746° ± 1.09e-05
Long. of Asc. Node (Ω)174.23974579° ± 3.20e-05
Arg. of Perihelion (ω)308.38912561° ± 3.27e-05
Mean Anomaly (M)247.58297462° ± 4.92e-06
Mean Motion (n)0.3591308229°/day ± 7.89e-10
Perihelion dist (q)0.66096726 AU ± 1.25e-07
Aphelion dist (Q)3.25948701 AU ± 1.25e-07
Orbital Period2.74447700 yr ± 6.03e-09
Physical Parameters
H (abs. magnitude)19.86
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.327″
Uncertainty0
Orbit TypeApollo
MOID0.065549 AU
Observations Used200
Oppositions15
Arc Total2001-2024
First Observation Used2001-09-25
Last Observation Used2024-06-01
Observations (202)
Date Type RA Dec Mag Band Observatory
2012-11-21 00:32:11 C 22 05 51.07 -29 06 58.2 u 807
2012-11-21 00:37:40 C 22 05 50.38 -29 07 04.7 u 807
2012-11-21 00:42:43 C 22 05 49.75 -29 07 10.5 u 807
2012-11-27 00:28:52 C 21 47 28.66 -32 00 14.6 u 807
2012-11-27 00:34:53 C 21 47 27.76 -32 00 21.5 u 807
2012-11-27 00:41:57 C 21 47 26.74 -32 00 30.6 u 807
2013-06-13 07:27:57 C 16 48 10.59 -07 28 51.6 o 291
2013-06-13 07:40:27 C 16 48 09.72 -07 28 52.9 o 291
2013-06-13 07:52:58 C 16 48 08.83 -07 28 53.8 o 291
2023-09-19 12:39:47 C 01 13 11.562 +03 56 13.48 X F52
2023-09-19 12:58:30 C 01 13 10.978 +03 56 00.80 X F52
2023-09-19 13:17:13 C 01 13 10.406 +03 55 48.16 X F52
2023-09-19 13:35:48 C 01 13 09.823 +03 55 35.49 X F52
2023-10-01 22:18:23 C 01 00 10.53 -00 34 15.5 X C95
2023-10-01 22:46:20 C 01 00 08.61 -00 34 49.8 X C95
2023-10-02 21:43:56 B 00 58 40.88 -01 02 12.2 X M45
2023-10-02 21:51:51 B 00 58 40.32 -01 02 22.6 X M45
2023-10-02 21:59:45 B 00 58 39.83 -01 02 31.2 X M45
2023-10-03 09:07:30 C 00 57 55.145 -01 16 08.44 V 703
2023-10-03 09:15:37 C 00 57 54.580 -01 16 19.16 V 703
2023-10-03 09:23:43 C 00 57 54.000 -01 16 28.56 V 703
2023-10-03 09:31:51 C 00 57 53.424 -01 16 38.32 V 703
2023-10-03 20:38:55 B 00 57 09.22 -01 30 37.6 X M45
2023-10-03 20:46:49 B 00 57 08.67 -01 30 47.3 X M45
2023-10-03 20:54:42 B 00 57 08.11 -01 30 57.2 X M45
2023-10-04 07:53:39 C 00 56 21.916 -01 44 53.95 V 703
2023-10-04 08:01:38 C 00 56 21.329 -01 45 03.06 V 703
2023-10-04 08:09:33 C 00 56 20.771 -01 45 13.46 V 703
2023-10-04 08:17:24 C 00 56 20.159 -01 45 23.83 V 703
2023-10-05 06:26:51 C 00 54 45.364 -02 14 25.62 V 703
2023-10-05 06:34:39 C 00 54 44.654 -02 14 36.06 V 703
2023-10-05 06:42:28 C 00 54 44.046 -02 14 47.44 V 703
2023-10-05 06:50:16 C 00 54 43.506 -02 14 57.98 V 703
2023-10-05 09:47:06 C 00 54 30.517 -02 18 50.32 X F52
2023-10-05 10:02:09 C 00 54 29.326 -02 19 10.49 X F52
2023-10-05 10:17:15 C 00 54 28.125 -02 19 30.84 X F52
2023-10-05 10:32:16 C 00 54 26.935 -02 19 50.92 X F52
2023-10-09 06:21:28 C 00 47 01.338 -04 32 20.00 V 703
2023-10-09 06:29:02 C 00 47 00.654 -04 32 30.16 V 703
2023-10-09 06:44:07 C 00 46 59.272 -04 32 55.10 V 703
2023-10-11 06:35:54 C 00 42 35.006 -05 49 27.52 V 703
2023-10-11 06:43:57 C 00 42 34.175 -05 49 40.91 V 703
2023-10-11 06:52:01 C 00 42 33.354 -05 49 53.47 V 703
2023-10-11 07:00:04 C 00 42 32.569 -05 50 07.44 V 703
2023-10-13 05:49:31 C 00 37 52.639 -07 10 10.56 V U52
2023-10-13 05:52:40 C 00 37 52.152 -07 10 15.38 V U52
2023-10-13 05:55:46 C 00 37 51.871 -07 10 21.29 V U52
2023-10-13 09:21:22 C 00 37 30.125 -07 16 18.68 X F51
2023-10-13 09:37:44 C 00 37 28.310 -07 16 47.57 X F51
2023-10-13 10:11:48 C 00 37 24.528 -07 17 47.97 X F51