2021 AP1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3805774659 ± 1.11e-07
Semi-major axis (a)1.5807035324 AU ± 5.72e-09
Inclination (i)11.73460690° ± 1.38e-05
Long. of Asc. Node (Ω)111.57848797° ± 1.04e-05
Arg. of Perihelion (ω)311.03972210° ± 5.71e-05
Mean Anomaly (M)178.42319297° ± 2.27e-05
Mean Motion (n)0.4959485678°/day ± 2.69e-09
Perihelion dist (q)0.97912339 AU ± 1.75e-07
Aphelion dist (Q)2.18228368 AU ± 1.75e-07
Orbital Period1.98735584 yr ± 1.08e-08
Physical Parameters
H (abs. magnitude)23.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.346″
Uncertainty0
Orbit TypeApollo
MOID0.067711 AU
Observations Used74
Oppositions2
Arc Total2021-2025
First Observation Used2021-01-03
Last Observation Used2025-01-18
Observations (75)
Date Type RA Dec Mag Band Observatory
2021-01-03 05:43:20 C 02 23 57.132 -12 11 33.80 V F51
2021-01-03 06:01:02 C 02 24 01.928 -12 09 54.99 U F51
2021-01-03 06:19:16 C 02 24 06.856 -12 08 12.13 U F51
2021-01-04 04:40:47 C 02 30 33.81 -10 01 18.8 V 291
2021-01-04 04:48:57 C 02 30 36.06 -10 00 31.6 V 291
2021-01-05 06:09:21 C 02 37 57.80 -07 33 39.9 V 291
2021-01-05 06:18:38 C 02 38 00.40 -07 32 45.4 V 291
2021-01-05 06:27:54 C 02 38 03.01 -07 31 51.0 V 291
2021-01-05 06:49:40 C 02 38 11.487 -07 29 35.57 V F51
2021-01-05 07:07:39 C 02 38 16.412 -07 27 50.46 V F51
2021-01-05 07:25:25 C 02 38 21.286 -07 26 06.30 V F51
2021-01-05 07:43:09 C 02 38 26.182 -07 24 22.42 V F51
2021-01-06 00:14:34 C 02 43 19.27 -05 47 36.3 u H21
2021-01-06 00:29:47 C 02 43 23.53 -05 46 07.0 u H21
2021-01-11 03:20:53 C 03 19 37.65 +06 17 17.1 V G96
2021-01-11 03:29:09 C 03 19 39.98 +06 18 04.8 V G96
2021-01-11 03:37:24 C 03 19 42.24 +06 18 51.2 V G96
2021-01-11 03:45:37 C 03 19 44.58 +06 19 39.4 V G96
2021-01-11 04:01:16 C 03 19 48.94 +06 21 08.0 V V06
2021-01-11 04:04:23 C 03 19 49.85 +06 21 26.1 V V06
2021-01-11 04:07:30 C 03 19 50.65 +06 21 43.1 V V06
2021-01-11 04:10:37 C 03 19 51.58 +06 22 01.8 V V06
2021-01-14 02:18:10 C 03 40 29.17 +12 49 12.0 u 807
2021-01-14 02:27:44 C 03 40 31.82 +12 50 02.8 u 807
2021-01-14 02:37:43 C 03 40 34.60 +12 50 54.2 u 807
2021-01-16 03:52:29 C 03 54 55.11 +16 58 07.0 V V06
2021-01-16 03:55:36 C 03 54 55.95 +16 58 21.8 V V06
2021-01-16 03:58:43 C 03 54 56.80 +16 58 36.9 V V06
2021-01-16 08:02:01 C 03 56 05.946 +17 18 15.18 U F51
2021-01-16 08:19:55 C 03 56 10.814 +17 19 39.79 U F51
2021-01-16 08:37:45 C 03 56 15.726 +17 21 05.08 U F51
2022-12-28 03:41:23 C 04 33 16.86 -33 22 28.6 V W94
2022-12-28 03:50:17 C 04 33 19.92 -33 21 14.0 V W94
2022-12-28 03:59:11 C 04 33 23.00 -33 19 58.2 V W94
2022-12-28 06:41:08 C 04 34 20.15 -32 56 51.0 V W95
2022-12-28 06:48:46 C 04 34 22.88 -32 55 45.8 V W95
2022-12-28 06:57:58 C 04 34 26.29 -32 54 25.8 V W95
2022-12-28 07:09:45 C 04 34 30.57 -32 52 44.0 V W95
2022-12-28 07:17:21 C 04 34 33.33 -32 51 35.8 V W95
2022-12-28 07:25:17 C 04 34 36.13 -32 50 29.5 V W95
2022-12-28 10:08:03 C 04 35 46.97 -32 27 23.8 V 474
2022-12-28 10:09:50 C 04 35 47.62 -32 27 08.2 V 474
2022-12-28 10:11:37 C 04 35 48.23 -32 26 53.3 V 474
2022-12-28 10:13:24 C 04 35 48.85 -32 26 38.3 V 474
2022-12-28 10:15:11 C 04 35 49.48 -32 26 22.6 V 474
2022-12-29 03:06:17 C 04 42 07.44 -30 00 13.0 u 807
2022-12-29 03:14:28 C 04 42 10.21 -29 58 59.7 u 807
2022-12-29 03:22:39 C 04 42 12.96 -29 57 46.7 u 807
2022-12-30 02:45:38 C 04 50 49.11 -26 24 42.0 u 807
2022-12-30 02:51:07 C 04 50 50.90 -26 23 51.0 u 807