2021 AT4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4318429410
Semi-major axis (a)1.3674355936 AU
Inclination (i)13.03484010°
Long. of Asc. Node (Ω)112.00377105°
Arg. of Perihelion (ω)265.72391327° ± 6.00e+00
Mean Anomaly (M)55.98281394°
Mean Motion (n)0.6163788900°/day
Perihelion dist (q)0.77691950 AU
Aphelion dist (Q)1.95793490 AU
Orbital Period1.59902890 yr
Physical Parameters
H (abs. magnitude)24.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.261″
Uncertainty
Orbit TypeApollo
MOID0.028495 AU
Observations Used21
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-01-11
Observations (21)
Date Type RA Dec Mag Band Observatory
2021-01-10 06:06:04 C 05 39 59.05 +13 50 39.4 V G96
2021-01-10 06:13:27 C 05 39 59.68 +13 51 17.7 V G96
2021-01-10 06:20:49 C 05 40 00.35 +13 51 55.7 V G96
2021-01-10 06:28:14 C 05 40 00.98 +13 52 33.9 V G96
2021-01-10 08:02:15 C 05 40 09.32 +14 00 34.0 V I52
2021-01-10 08:04:40 C 05 40 09.57 +14 00 46.7 V I52
2021-01-10 08:07:05 C 05 40 09.75 +14 00 59.0 V I52
2021-01-10 08:09:31 C 05 40 10.00 +14 01 11.2 V I52
2021-01-10 18:23:20 C 05 41 16.91 +14 52 03.2 V 033
2021-01-10 18:26:45 C 05 41 17.22 +14 52 19.7 V 033
2021-01-10 18:30:10 C 05 41 17.55 +14 52 36.8 V 033
2021-01-10 18:33:41 C 05 41 17.87 +14 52 54.0 V 033
2021-01-10 23:40:23 C 05 41 45.15 +15 17 43.6 V 204
2021-01-11 00:13:49 C 05 41 48.09 +15 20 22.2 V 204
2021-01-11 03:31:39 C 05 42 11.51 +15 36 13.1 V V06
2021-01-11 03:34:12 C 05 42 11.70 +15 36 24.6 V V06
2021-01-11 18:50:37 C 05 43 40.23 +16 45 41.8 V L01
2021-01-11 18:56:16 C 05 43 40.73 +16 46 07.3 V L01
2021-01-11 19:01:56 C 05 43 41.19 +16 46 32.3 V L01
2021-01-11 19:07:43 C 05 43 41.66 +16 46 57.9 V L01
2021-01-11 19:14:31 C 05 43 42.27 +16 47 28.2 V L01