21374 — IAA Minor Planet Database

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.1207067223 ± 5.62e-09
Semi-major axis (a)	1.2694768683 AU ± 2.72e-10
Inclination (i)	23.97969173° ± 1.57e-06
Long. of Asc. Node (Ω)	59.19048102° ± 1.05e-06
Arg. of Perihelion (ω)	197.34514071° ± 3.61e-06
Mean Anomaly (M)	4.82548646° ± 2.86e-06
Mean Motion (n)	0.6890886369°/day ± 2.21e-10
Perihelion dist (q)	1.11624248 AU ± 7.13e-09
Aphelion dist (Q)	1.42271126 AU ± 7.14e-09
Orbital Period	1.43033310 yr ± 4.59e-10

Physical Parameters

H (abs. magnitude)	17.45
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-05-31
RMS Residual	0.252″
Uncertainty	0
Orbit Type	Amor
MOID	0.108428 AU
Observations Used	2054
Radar Obs Used	1
Gaia Obs Used	44
Oppositions	13
Arc Total	1974-2025
First Observation Used	1974-09-22
Last Observation Used	2025-02-22

Observations (2303)

Date	Type	RA	Dec	Mag	Band	Observatory
2020-12-20 08:46:14	C	08 26 01.50	+62 18 06.0	–	U	I41
2020-12-20 08:56:00	C	08 26 01.04	+62 18 24.6	–	U	I41
2020-12-21 15:26:48	C	08 24 36.08	+63 15 10.4	–	V	T05
2020-12-21 15:37:35	C	08 24 35.47	+63 15 29.3	–	V	T05
2020-12-21 15:52:15	C	08 24 34.59	+63 15 56.2	–	V	T05
2020-12-21 15:56:17	C	08 24 34.39	+63 16 03.5	–	V	T05
2020-12-23 06:30:57	C	08 22 29.11	+64 26 27.7	–	V	703
2020-12-23 06:38:40	C	08 22 28.83	+64 26 42.1	–	V	703
2020-12-23 06:46:23	C	08 22 28.16	+64 26 55.2	–	V	703
2020-12-23 06:54:07	C	08 22 27.86	+64 27 09.7	–	V	703
2020-12-23 07:03:00	C	08 22 27.01	+64 27 26.2	–	V	703
2020-12-23 07:10:48	C	08 22 26.71	+64 27 40.9	–	V	703
2020-12-23 07:18:36	C	08 22 25.89	+64 27 54.6	–	V	703
2020-12-23 07:26:24	C	08 22 25.33	+64 28 09.0	–	V	703
2020-12-23 11:38:09	C	08 22 09.30	+64 35 46.9	–	V	T08
2020-12-23 11:40:48	C	08 22 09.09	+64 35 51.4	–	V	T08
2020-12-23 11:44:46	C	08 22 08.85	+64 35 58.3	–	V	T08
2020-12-23 11:58:09	C	08 22 07.82	+64 36 22.5	–	V	T08
2020-12-24 08:48:33	C	08 20 46.537	+65 13 29.05	–	U	F51
2020-12-24 09:03:26	C	08 20 45.407	+65 13 56.23	–	U	F51
2020-12-24 09:18:20	C	08 20 44.260	+65 14 23.26	–	U	F51
2020-12-24 09:33:15	C	08 20 43.106	+65 14 50.39	–	U	F51
2020-12-24 11:35:07	C	08 20 33.417	+65 18 29.79	–	U	F52
2020-12-24 11:52:51	C	08 20 31.995	+65 19 01.30	–	U	F52
2020-12-24 12:28:24	C	08 20 29.094	+65 20 04.41	–	U	F52
2020-12-25 11:22:13	C	08 18 46.93	+66 00 11.4	–	V	T05
2020-12-25 11:24:51	C	08 18 46.64	+66 00 16.1	–	V	T05
2020-12-25 11:29:30	C	08 18 46.30	+66 00 23.7	–	V	T05
2020-12-25 11:36:44	C	08 18 45.81	+66 00 36.8	–	V	T05
2020-12-26 06:20:28	C	08 17 14.53	+66 32 46.1	–	V	703
2020-12-26 06:28:21	C	08 17 13.76	+66 33 00.2	–	V	703
2020-12-26 06:36:15	C	08 17 13.05	+66 33 14.1	–	V	703
2020-12-26 06:44:08	C	08 17 12.35	+66 33 27.6	–	V	703
2020-12-26 10:49:58	C	08 16 50.670	+66 40 31.27	–	U	F51
2020-12-26 11:21:40	C	08 16 47.556	+66 41 25.84	–	U	F51
2020-12-26 11:37:31	C	08 16 45.995	+66 41 53.03	–	U	F51
2020-12-29 11:14:36	C	08 09 32.68	+68 39 30.3	–	V	T05
2020-12-29 11:19:12	C	08 09 32.07	+68 39 36.6	–	V	T05
2020-12-29 11:23:50	C	08 09 31.49	+68 39 44.2	–	V	T05
2020-12-29 11:37:53	C	08 09 29.74	+68 40 05.6	–	V	T05
2020-12-29 12:32:10	C	08 09 22.86	+68 41 31.9	–	V	T05
2020-12-31 10:02:22	C	08 03 43.26	+69 51 14.5	–	V	T08
2020-12-31 10:06:30	C	08 03 42.61	+69 51 20.8	–	V	T08
2020-12-31 10:13:51	C	08 03 41.50	+69 51 31.9	–	V	T08
2020-12-31 10:17:50	C	08 03 40.86	+69 51 38.0	–	V	T08
2020-12-31 10:21:16	C	08 03 40.38	+69 51 43.3	–	V	T08
2020-12-31 10:21:56	C	08 03 40.23	+69 51 43.8	–	V	T08
2020-12-31 10:25:55	C	08 03 39.85	+69 51 50.1	–	V	T08
2020-12-31 10:33:13	C	08 03 38.48	+69 52 01.4	–	V	T08
2021-01-01 03:43:31	C	08 01 17.53	+70 16 59.9	–	U	I41

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21374 (1997 WS22)