2019 ST9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6066819287 ± 3.92e-08
Semi-major axis (a)1.6670763212 AU ± 2.43e-08
Inclination (i)29.84386918° ± 1.97e-05
Long. of Asc. Node (Ω)190.85618409° ± 6.22e-06
Arg. of Perihelion (ω)295.70417790° ± 9.29e-06
Mean Anomaly (M)259.31781033° ± 1.45e-05
Mean Motion (n)0.4579088654°/day ± 1.00e-08
Perihelion dist (q)0.65569124 AU ± 6.61e-08
Aphelion dist (Q)2.67846140 AU ± 7.62e-08
Orbital Period2.15245076 yr ± 4.71e-08
Physical Parameters
H (abs. magnitude)20.61
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.205″
Uncertainty0
Orbit TypeApollo
MOID0.127171 AU
Observations Used74
Oppositions2
Arc Total2019-2022
First Observation Used2019-09-04
Last Observation Used2022-04-23
Observations (102)
Date Type RA Dec Mag Band Observatory
2019-09-04 14:06:04 C 00 40 58.734 +21 28 46.10 V F51
2019-09-04 14:23:20 C 00 40 58.258 +21 28 36.67 V F51
2019-09-04 14:40:40 C 00 40 57.771 +21 28 27.44 V F51
2019-09-19 12:35:04 C 00 26 05.379 +16 21 24.45 V F51
2019-09-19 12:51:43 C 00 26 04.326 +16 21 03.48 V F51
2019-09-30 05:34:43 C 00 07 33.56 +09 27 19.7 V G96
2019-09-30 05:42:52 C 00 07 32.85 +09 27 03.3 V G96
2019-09-30 05:51:03 C 00 07 32.14 +09 26 47.0 V G96
2019-09-30 05:59:14 C 00 07 31.41 +09 26 30.5 V G96
2019-09-30 06:38:03 C 00 07 27.91 +09 25 12.9 V H01
2019-09-30 06:43:41 C 00 07 27.42 +09 25 01.7 V H01
2019-09-30 06:57:38 C 00 07 26.18 +09 24 33.8 V H01
2019-09-30 07:07:24 C 00 07 25.32 +09 24 14.5 V H01
2019-09-30 07:36:18 C 00 07 22.81 +09 23 17.2 V I52
2019-09-30 07:39:36 C 00 07 22.52 +09 23 10.4 V I52
2019-09-30 07:42:54 C 00 07 22.22 +09 23 03.6 V I52
2019-09-30 07:46:12 C 00 07 21.93 +09 22 57.1 V I52
2019-10-01 04:47:00 C 00 05 34.56 +08 40 13.7 u H21
2019-10-01 04:55:47 C 00 05 33.77 +08 39 55.6 u H21
2019-10-01 05:04:34 C 00 05 32.98 +08 39 37.6 u H21
2019-10-01 05:16:14 C 00 05 32.30 +08 39 15.0 V I52
2019-10-01 05:17:19 C 00 05 32.22 +08 39 12.8 V I52
2019-10-01 05:18:25 C 00 05 32.12 +08 39 10.7 V I52
2019-10-01 05:19:32 C 00 05 32.02 +08 39 08.2 V I52
2019-10-01 06:55:29 C 00 05 23.23 +08 35 51.0 o 711
2019-10-01 07:00:52 C 00 05 22.73 +08 35 39.4 o 711
2019-10-01 07:05:25 C 00 05 22.26 +08 35 30.2 o 711
2019-10-01 20:45:35 C 00 04 11.50 +08 06 50.4 q K63
2019-10-01 20:52:47 C 00 04 10.82 +08 06 35.6 q K63
2019-10-01 20:59:13 C 00 04 10.29 +08 06 21.9 q K63
2019-10-01 23:03:10 C 00 03 58.90 +08 02 00.0 v L01
2019-10-01 23:07:10 C 00 03 58.56 +08 01 51.5 v L01
2019-10-01 23:10:00 C 00 03 58.30 +08 01 45.7 v L01
2019-10-05 04:34:01 C 23 56 57.02 +05 09 06.4 u 807
2019-10-05 04:38:26 C 23 56 56.61 +05 08 56.1 u 807
2019-10-05 04:42:50 C 23 56 56.18 +05 08 45.8 u 807
2019-10-05 07:37:36 C 23 56 40.580 +05 01 39.25 V F52
2019-10-05 08:09:14 C 23 56 37.460 +05 00 24.73 V F52
2019-10-16 21:11:08 C 23 28 54.31 -07 23 50.5 V L01
2019-10-16 21:16:14 C 23 28 53.76 -07 24 05.4 V L01
2019-10-16 21:21:19 C 23 28 53.20 -07 24 20.3 V L01
2019-10-17 05:54:39 C 23 28 00.01 -07 49 20.2 V I52
2019-10-17 05:56:15 C 23 27 59.84 -07 49 24.6 V I52
2019-10-17 05:57:51 C 23 27 59.65 -07 49 29.5 V I52
2019-10-20 03:13:07 C 23 20 51.60 -11 13 58.0 o 691
2019-10-20 03:24:18 C 23 20 50.43 -11 14 31.0 o 691
2019-10-20 03:35:27 C 23 20 49.17 -11 15 04.5 o 691
2019-10-23 07:52:47 C 23 13 02.503 -15 01 07.65 U F52
2019-10-23 08:08:46 C 23 13 00.799 -15 01 54.57 U F52
2019-10-23 08:24:44 C 23 12 59.104 -15 02 41.65 U F52