2017 ST20

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1716889618 ± 5.68e-08
Semi-major axis (a)1.3126793709 AU ± 2.01e-09
Inclination (i)15.42017443° ± 6.91e-06
Long. of Asc. Node (Ω)188.63654197° ± 6.75e-06
Arg. of Perihelion (ω)268.55032951° ± 3.25e-05
Mean Anomaly (M)86.78785908° ± 2.45e-05
Mean Motion (n)0.6553514819°/day ± 1.51e-09
Perihelion dist (q)1.08730681 AU ± 7.45e-08
Aphelion dist (Q)1.53805193 AU ± 7.46e-08
Orbital Period1.50396590 yr ± 3.46e-09
Physical Parameters
H (abs. magnitude)22.63
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.210″
Uncertainty0
Orbit TypeAmor
MOID0.224045 AU
Observations Used118
Oppositions3
Arc Total2014-2023
First Observation Used2014-09-23
Last Observation Used2023-10-16
Observations (121)
Date Type RA Dec Mag Band Observatory
2017-11-23 03:33:32 C 03 57 13.74 -44 48 25.4 U 807
2017-11-23 03:45:50 C 03 57 13.78 -44 48 41.0 U 807
2017-12-15 04:48:45 C 04 06 58.30 -50 16 10.9 U 807
2017-12-15 05:04:30 C 04 06 58.55 -50 16 11.6 U 807
2017-12-15 05:20:10 C 04 06 58.79 -50 16 12.7 U 807
2018-01-17 02:03:16 C 04 47 02.57 -44 28 38.7 U 807
2018-01-17 02:16:07 C 04 47 03.42 -44 28 26.2 U 807
2018-01-17 02:28:58 C 04 47 04.26 -44 28 13.9 U 807
2018-02-08 02:39:45 C 05 35 30.89 -32 46 24.7 U 807
2018-02-08 02:55:39 C 05 35 32.50 -32 45 57.8 U 807
2018-02-08 03:11:40 C 05 35 34.13 -32 45 30.2 U 807
2018-02-21 01:39:51 C 06 11 34.00 -22 55 42.0 U 807
2018-02-21 01:45:59 C 06 11 34.71 -22 55 29.2 U 807
2018-02-21 01:56:05 C 06 11 35.87 -22 55 07.9 U 807
2018-02-21 02:07:03 C 06 11 37.15 -22 54 45.0 U 807
2020-09-16 14:48:04 C 02 16 13.066 +17 40 55.30 U F51
2020-09-16 15:01:42 C 02 16 13.842 +17 40 37.75 U F51
2020-09-16 15:08:31 C 02 16 14.231 +17 40 29.29 U F51
2020-09-22 07:23:31 C 02 24 32.27 +14 23 46.3 u H21
2020-09-22 07:36:22 C 02 24 32.95 +14 23 25.7 u H21
2020-09-22 07:44:30 C 02 24 33.36 +14 23 12.5 u H21
2020-09-26 07:47:54 C 02 29 55.08 +11 32 03.2 V G96
2020-09-26 07:55:18 C 02 29 55.45 +11 31 48.6 V G96
2020-09-26 08:02:41 C 02 29 55.74 +11 31 34.7 V G96
2020-09-26 08:10:03 C 02 29 56.08 +11 31 20.5 V G96
2020-09-27 13:20:09 C 02 31 27.456 +10 33 48.52 U F51
2020-09-27 13:41:13 C 02 31 28.396 +10 33 05.78 U F51
2020-09-27 14:22:56 C 02 31 30.248 +10 31 41.30 U F51
2020-10-08 09:55:28 C 02 43 13.50 +00 02 28.1 V G96
2020-10-08 10:02:50 C 02 43 13.71 +00 02 07.8 V G96
2020-10-08 10:10:12 C 02 43 13.93 +00 01 47.0 V G96
2020-10-08 10:17:34 C 02 43 14.11 +00 01 25.9 V G96
2020-10-16 09:50:22 C 02 49 21.958 -09 31 10.48 U F51
2020-10-16 10:07:21 C 02 49 22.237 -09 32 03.69 U F51
2020-10-16 10:41:22 C 02 49 22.792 -09 33 50.55 U F51
2020-10-17 10:21:11 C 02 49 58.898 -10 47 56.20 U F52
2020-10-17 10:40:34 C 02 49 59.175 -10 48 56.72 U F52
2020-10-17 10:59:57 C 02 49 59.466 -10 49 57.74 U F52
2020-10-21 07:47:23 C 02 52 02.34 -15 41 15.4 V G96
2020-10-21 07:55:26 C 02 52 02.42 -15 41 40.2 V G96
2020-10-21 08:03:28 C 02 52 02.51 -15 42 05.6 V G96
2020-10-21 08:11:31 C 02 52 02.58 -15 42 30.7 V G96
2023-09-08 11:01:29 C 01 38 20.551 +21 12 26.85 X F51
2023-09-08 11:19:27 C 01 38 21.377 +21 12 12.52 X F51
2023-09-08 11:37:28 C 01 38 22.226 +21 11 58.26 X F51
2023-09-08 11:55:53 C 01 38 23.065 +21 11 43.38 X F51
2023-09-15 10:42:30 C 01 46 28.952 +18 24 13.88 X F52
2023-09-15 11:01:08 C 01 46 29.674 +18 23 51.87 X F52
2023-09-15 11:19:59 C 01 46 30.378 +18 23 28.95 X F52
2023-09-16 07:57:24 C 01 47 24.817 +17 57 50.47 V G96