2021 AS4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6048104000
Semi-major axis (a)2.6082617000 AU
Inclination (i)3.69240000°
Long. of Asc. Node (Ω)270.36645000°
Arg. of Perihelion (ω)172.93977000°
Mean Anomaly (M)59.78726000°
Mean Motion (n)0.2339792500°/day
Perihelion dist (q)1.03075790 AU
Aphelion dist (Q)4.18576550 AU
Orbital Period4.21237230 yr
Physical Parameters
H (abs. magnitude)24.32
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.790″
Uncertainty8
Orbit TypeAmor
MOID0.046473 AU
Observations Used32
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-01-16
Observations (32)
Date Type RA Dec Mag Band Observatory
2021-01-10 05:09:18 C 04 16 09.44 +11 55 31.5 V G96
2021-01-10 05:16:39 C 04 16 12.80 +11 55 29.5 V G96
2021-01-10 05:24:00 C 04 16 16.14 +11 55 28.0 V G96
2021-01-10 05:31:20 C 04 16 19.51 +11 55 25.7 V G96
2021-01-10 06:34:00 C 04 16 48.20 +11 55 08.2 V I52
2021-01-10 06:38:50 C 04 16 50.40 +11 55 05.7 V I52
2021-01-10 06:43:41 C 04 16 52.62 +11 55 04.8 V I52
2021-01-10 06:48:31 C 04 16 54.85 +11 55 03.2 V I52
2021-01-10 17:33:14 C 04 22 04.98 +11 51 48.5 V 033
2021-01-10 17:35:34 C 04 22 06.07 +11 51 47.7 V 033
2021-01-10 17:37:54 C 04 22 07.16 +11 51 47.5 V 033
2021-01-10 17:40:15 C 04 22 08.23 +11 51 46.3 V 033
2021-01-10 19:23:51 C 04 22 55.97 +11 51 25.1 V 204
2021-01-10 19:58:12 C 04 23 11.65 +11 51 15.4 V 204
2021-01-11 02:35:39 C 04 26 19.97 +11 49 34.5 V V06
2021-01-11 02:38:46 C 04 26 21.36 +11 49 34.2 V V06
2021-01-11 02:41:54 C 04 26 22.77 +11 49 33.3 V V06
2021-01-11 02:45:01 C 04 26 24.19 +11 49 32.6 V V06
2021-01-11 18:29:07 C 04 33 43.27 +11 44 25.4 V L01
2021-01-11 18:35:27 C 04 33 46.12 +11 44 24.0 V L01
2021-01-11 18:38:36 C 04 33 47.56 +11 44 23.0 V L01
2021-01-11 18:42:03 C 04 33 49.08 +11 44 21.6 V L01
2021-01-13 03:16:32 C 04 48 34.91 +11 34 38.0 u 807
2021-01-13 03:25:52 C 04 48 38.93 +11 34 33.9 u 807
2021-01-13 03:35:10 C 04 48 42.91 +11 34 30.5 u 807
2021-01-13 04:01:56 C 04 48 57.34 +11 33 05.0 V I52
2021-01-13 04:05:34 C 04 48 58.90 +11 33 03.6 V I52
2021-01-13 04:09:12 C 04 49 00.46 +11 33 02.4 V I52
2021-01-16 04:34:41 C 05 19 50.48 +11 03 56.0 V I52
2021-01-16 04:38:19 C 05 19 51.84 +11 03 55.4 V I52
2021-01-16 04:41:56 C 05 19 53.20 +11 03 53.5 V I52
2021-01-16 04:45:34 C 05 19 54.65 +11 03 52.0 V I52