2025 SN21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3579199789 ± 9.43e-05
Semi-major axis (a)1.5407171822 AU ± 2.28e-04
Inclination (i)11.19471457° ± 2.20e-03
Long. of Asc. Node (Ω)190.17564326° ± 9.52e-06
Arg. of Perihelion (ω)208.63018100° ± 1.12e-03
Mean Anomaly (M)12.05614125° ± 1.78e-03
Mean Motion (n)0.5153803870°/day ± 1.14e-04
Perihelion dist (q)0.98926372 AU ± 2.06e-04
Aphelion dist (Q)2.09217064 AU ± 3.41e-04
Orbital Period1.91242490 yr ± 4.24e-04
Physical Parameters
H (abs. magnitude)26.71
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-03
RMS Residual0.132″
Uncertainty1
Orbit TypeApollo
MOID0.017401 AU
Observations Used35
Oppositions1
Arc Total2025-2025
First Observation Used2025-09-29
Last Observation Used2025-10-04
Observations (37)
Date Type RA Dec Mag Band Observatory
2025-09-29 05:55:21 C 22 54 05.975 +21 59 14.80 X F52
2025-09-29 06:13:42 C 22 54 15.551 +21 57 36.46 X F52
2025-09-29 06:32:11 C 22 54 25.143 +21 55 56.81 X F52
2025-09-29 09:27:02 C 22 55 45.872 +21 38 09.35 V I52
2025-09-29 09:27:48 C 22 55 46.333 +21 38 03.73 V I52
2025-09-29 09:28:33 C 22 55 46.751 +21 37 59.77 V I52
2025-09-29 09:29:18 C 22 55 47.179 +21 37 55.24 V I52
2025-09-29 09:34:58 C 22 55 59.491 +21 38 43.42 V F51
2025-09-29 09:36:08 C 22 56 00.093 +21 38 36.70 V F51
2025-09-29 22:14:02 C 23 03 55.037 +20 17 26.60 X 033
2025-09-29 22:15:10 C 23 03 55.728 +20 17 18.70 X 033
2025-09-29 22:16:18 C 23 03 56.408 +20 17 11.10 X 033
2025-09-29 22:17:26 C 23 03 57.100 +20 17 03.40 X 033
2025-09-29 22:57:38 B 23 04 23.82 +20 12 58.8 V I93
2025-09-29 23:01:28 B 23 04 26.15 +20 12 32.1 V I93
2025-09-29 23:05:09 B 23 04 28.47 +20 12 07.0 V I93
2025-09-30 06:25:47 C 23 09 43.399 +19 21 41.54 V T12
2025-09-30 06:26:57 C 23 09 44.164 +19 21 33.12 V T12
2025-09-30 06:27:56 C 23 09 44.796 +19 21 26.11 V T12
2025-10-01 20:18:02 B 23 41 32.366 +13 26 19.90 Z K74
2025-10-01 20:28:02 B 23 41 41.765 +13 24 25.13 Z K74
2025-10-01 20:38:03 B 23 41 51.154 +13 22 29.86 Z K74
2025-10-01 20:48:33 B 23 42 00.994 +13 20 28.39 Z K74
2025-10-01 20:59:35 B 23 42 11.362 +13 18 20.81 Z K74
2025-10-01 21:10:28 B 23 42 21.590 +13 16 13.87 Z K74
2025-10-02 03:36:29 B 23 48 57.202 +11 58 35.24 W 932
2025-10-02 03:42:17 B 23 49 02.902 +11 57 21.92 W 932
2025-10-02 03:48:07 B 23 49 08.685 +11 56 08.52 W 932
2025-10-02 22:38:31 B 00 10 58.483 +07 28 42.60 Z K74
2025-10-02 23:01:36 B 00 11 25.985 +07 22 39.14 Z K74
2025-10-04 05:44:51 C 00 55 43.58 -02 00 15.7 V H21
2025-10-04 05:46:52 C 00 55 46.67 -02 00 57.9 V H21
2025-10-04 05:48:54 C 00 55 49.76 -02 01 40.2 V H21
2025-10-04 05:50:56 C 00 55 52.85 -02 02 22.4 V H21
2025-10-04 05:53:59 C 00 55 57.52 -02 03 25.4 V H21
2025-10-04 05:56:01 C 00 56 00.64 -02 04 07.6 V H21
2025-10-04 05:58:02 C 00 56 03.74 -02 04 50.0 V H21