2021 ST1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5320756000
Semi-major axis (a)2.1631403000 AU
Inclination (i)13.95658000°
Long. of Asc. Node (Ω)185.26917000°
Arg. of Perihelion (ω)186.02488000°
Mean Anomaly (M)107.34377000°
Mean Motion (n)0.3097968700°/day
Perihelion dist (q)1.01218610 AU
Aphelion dist (Q)3.31409450 AU
Orbital Period3.18146410 yr
Physical Parameters
H (abs. magnitude)27.00
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.850″
Uncertainty7
Orbit TypeAmor
MOID0.010405 AU
Observations Used30
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-09-29
Observations (34)
Date Type RA Dec Mag Band Observatory
2021-09-27 04:55:26 C 21 53 51.21 +16 01 08.9 U I41
2021-09-27 04:55:56 C 21 53 52.28 +16 00 58.6 U I41
2021-09-27 05:28:42 C 21 55 06.44 +15 49 38.7 U I41
2021-09-27 05:29:12 C 21 55 07.53 +15 49 28.7 U I41
2021-09-27 06:05:33 C 21 56 30.69 +15 36 38.9 U I41
2021-09-27 06:06:03 C 21 56 31.82 +15 36 29.3 U I41
2021-09-28 05:58:03 C 23 07 38.05 +04 16 26.7 U I41
2021-09-28 05:58:34 C 23 07 39.69 +04 16 08.7 U I41
2021-09-28 05:59:26 C 23 07 42.67 +04 15 38.0 U I41
2021-09-28 05:59:56 C 23 07 44.21 +04 15 19.9 U I41
2021-09-28 06:34:29 C 23 09 40.79 +03 54 34.2 U I41
2021-09-28 06:34:59 C 23 09 42.30 +03 54 17.8 U I41
2021-09-28 20:04:58 C 00 01 04.22 -04 52 44.1 o K88
2021-09-28 20:06:48 C 00 01 11.23 -04 53 57.0 o K88
2021-09-28 20:08:38 C 00 01 18.21 -04 55 10.4 o K88
2021-09-28 20:11:24 C 00 01 29.00 -04 57 03.7 o K88
2021-09-28 20:12:21 C 00 01 32.73 -04 57 42.5 o K88
2021-09-28 20:14:10 C 00 01 39.74 -04 58 56.0 o K88
2021-09-28 20:31:47 C 00 02 51.68 -05 10 25.9 V L01
2021-09-28 20:32:56 C 00 02 56.17 -05 11 13.2 V L01
2021-09-28 20:33:48 C 00 02 59.49 -05 11 47.7 V L01
2021-09-28 20:38:36 C 00 03 18.06 -05 15 02.6 V L01
2021-09-28 20:39:45 C 00 03 22.50 -05 15 49.2 V L01
2021-09-28 20:41:21 C 00 03 28.68 -05 16 54.2 V L01
2021-09-28 22:41:24 C 00 11 24.28 -06 37 09.1 X Z41
2021-09-28 23:03:21 C 00 12 49.43 -06 51 55.9 X Z41
2021-09-28 23:08:01 C 00 13 07.50 -06 55 04.6 X Z41
2021-09-29 02:42:48 C 00 27 30.60 -09 06 41.9 X Y00
2021-09-29 02:44:16 C 00 27 36.30 -09 07 40.7 X Y00
2021-09-29 02:45:45 C 00 27 42.04 -09 08 39.5 X Y00
2021-09-29 06:00:00 C 00 40 48.21 -11 26 28.6 u H21
2021-09-29 06:01:32 C 00 40 54.17 -11 27 27.6 u H21
2021-09-29 06:03:04 C 00 41 00.13 -11 28 26.2 u H21
2021-09-29 06:05:40 C 00 41 10.29 -11 30 06.1 u H21