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
2019-10-29 06:10:22 C 22 59 11.673 -21 52 06.69 – U F51
2019-10-29 06:26:08 C 22 59 10.101 -21 52 51.33 – U F51
2019-10-29 06:41:52 C 22 59 08.534 -21 53 35.54 – U F51
2019-10-29 06:57:37 C 22 59 06.964 -21 54 19.70 – U F51
2019-11-19 01:15:42 C 22 20 56.22 -41 34 33.6 – u 807
2019-11-19 01:24:35 C 22 20 55.61 -41 34 51.2 – u 807
2019-11-19 01:33:06 C 22 20 55.03 -41 35 07.8 – u 807
2019-11-25 10:02:14 C 22 11 15.41 -46 23 11.4 – V 474
2019-11-25 10:12:22 C 22 11 14.80 -46 23 29.7 – V 474
2019-11-25 10:22:31 C 22 11 14.03 -46 23 47.9 – V 474
2020-05-24 11:07:44 C 18 11 45.145 +29 38 24.03 – V F51
2021-09-10 07:00:48 C 22 17 24.097 +17 34 21.79 – V F52
2021-09-10 07:53:08 C 22 17 20.477 +17 33 37.23 – V F52
2021-09-13 07:01:15 C 22 12 34.468 +16 31 46.34 – V F51
2021-09-13 07:57:08 C 22 12 30.639 +16 30 56.54 – V F51
2021-09-26 05:41:51 C 21 53 26.966 +11 18 54.04 – V F52
2021-09-26 05:58:22 C 21 53 26.004 +11 18 35.79 – V F52
2021-09-26 06:15:00 C 21 53 25.078 +11 18 18.02 – V F52
2022-04-22 03:00:25 C 06 04 41.074 +60 10 35.00 – V I52
2022-04-22 03:02:44 C 06 04 43.504 +60 10 52.82 – V I52
2022-04-22 03:05:04 C 06 04 45.793 +60 11 10.36 – V I52
2022-04-22 03:07:24 C 06 04 48.234 +60 11 27.24 – V I52
2022-04-23 03:00:38 C 06 31 11.694 +63 00 21.67 – V I52
2022-04-23 03:01:44 C 06 31 12.630 +63 00 26.57 – V I52
2022-04-23 03:02:51 C 06 31 14.315 +63 00 36.68 – V I52
2022-04-23 03:03:58 C 06 31 15.640 +63 00 43.42 – V I52
2022-05-11 01:52:36 S 12 57 46.198 +57 06 16.85 – L C51
2022-05-12 09:12:07 S 13 05 09.794 +55 51 05.33 – L C51
2022-05-12 12:20:04 S 13 05 50.724 +55 43 45.73 – L C51
2022-05-12 17:01:54 S 13 06 51.605 +55 32 49.49 – L C51
2022-05-12 17:02:05 S 13 06 51.485 +55 32 47.90 – L C51
2022-05-12 18:35:58 S 13 07 11.330 +55 29 11.47 – L C51
2022-05-12 20:10:02 S 13 07 31.14 +55 25 33.5 – L C51
2022-05-12 21:43:55 S 13 07 50.98 +55 21 58.1 – L C51
2022-05-12 23:17:59 S 13 08 10.62 +55 18 21.3 – L C51
2022-05-13 03:59:49 S 13 09 08.42 +55 07 37.1 – L C51
2022-05-13 05:33:42 S 13 09 27.44 +55 04 02.0 – L C51
2022-05-13 05:33:53 S 13 09 27.57 +55 04 02.3 – L C51
2022-05-13 07:07:46 S 13 09 46.74 +55 00 28.6 – L C51
2022-05-13 08:41:50 S 13 10 05.549 +54 56 56.44 – L C51
2022-05-13 10:15:43 S 13 10 24.180 +54 53 22.02 – L C51
2022-05-13 11:49:47 S 13 10 42.893 +54 49 51.85 – L C51
2022-05-13 14:57:33 S 13 11 19.596 +54 42 49.25 – L C51
2022-05-13 14:57:44 S 13 11 19.762 +54 42 48.53 – L C51
2022-05-13 16:31:37 S 13 11 37.954 +54 39 19.69 – L C51
2022-05-13 18:05:41 S 13 11 55.966 +54 35 48.88 – L C51
2022-05-13 21:13:27 S 13 12 32.131 +54 28 50.30 – L C51
2022-05-14 00:21:35 S 13 13 07.613 +54 21 51.73 – L C51
2022-05-14 03:29:21 S 13 13 42.631 +54 14 58.74 – L C51
2022-05-14 03:29:32 S 13 13 42.653 +54 14 58.42 – L C51