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
2020-12-09 12:03:03	C	08 29 01.92	+53 55 04.5	–	V	T05
2020-12-09 12:13:30	C	08 29 01.95	+53 55 24.8	–	V	T05
2020-12-09 12:16:31	C	08 29 01.952	+53 55 30.92	–	U	F51
2020-12-09 12:19:26	C	08 29 02.00	+53 55 36.4	–	V	T05
2020-12-09 12:35:14	C	08 29 02.062	+53 56 07.44	–	U	F51
2020-12-11 12:36:51	C	08 29 27.71	+55 29 24.6	–	V	T08
2020-12-11 12:39:30	C	08 29 27.70	+55 29 29.9	–	V	T08
2020-12-11 12:43:29	C	08 29 27.71	+55 29 37.7	–	V	T08
2020-12-11 12:50:47	C	08 29 27.66	+55 29 51.7	–	V	T08
2020-12-11 14:11:00	C	08 29 27.487	+55 32 27.63	–	U	F51
2020-12-11 14:28:42	C	08 29 27.435	+55 33 01.91	–	U	F51
2020-12-11 14:46:21	C	08 29 27.386	+55 33 36.01	–	U	F51
2020-12-11 15:04:01	C	08 29 27.341	+55 34 10.01	–	U	F51
2020-12-12 11:20:34	C	08 29 31.26	+56 13 37.4	–	U	I41
2020-12-12 11:21:54	C	08 29 31.25	+56 13 40.1	–	U	I41
2020-12-13 09:20:50	C	08 29 30.71	+56 56 28.3	–	V	703
2020-12-13 09:28:50	C	08 29 30.53	+56 56 44.1	–	V	703
2020-12-13 09:36:51	C	08 29 30.46	+56 57 00.1	–	V	703
2020-12-13 09:44:54	C	08 29 30.36	+56 57 16.0	–	V	703
2020-12-13 10:27:33	C	08 29 30.14	+56 58 39.0	–	U	I41
2020-12-13 11:16:36	C	08 29 29.61	+57 00 14.5	–	U	I41
2020-12-13 11:20:49	C	08 29 29.57	+57 00 22.7	–	U	I41
2020-12-15 09:10:35	C	08 29 08.87	+58 29 27.2	–	U	I41
2020-12-15 09:18:49	C	08 29 08.70	+58 29 43.4	–	U	I41
2020-12-15 09:44:28	C	08 29 08.21	+58 30 33.5	–	U	I41
2020-12-15 10:28:33	C	08 29 07.32	+58 31 59.3	–	U	I41
2020-12-15 10:29:59	C	08 29 07.29	+58 32 02.1	–	U	I41
2020-12-16 10:19:22	C	08 28 45.47	+59 18 07.9	–	U	I41
2020-12-16 10:20:42	C	08 28 45.43	+59 18 10.5	–	U	I41
2020-12-17 06:43:50	C	08 28 22.13	+59 57 22.4	–	V	703
2020-12-17 06:51:40	C	08 28 21.89	+59 57 37.7	–	V	703
2020-12-17 06:59:32	C	08 28 21.69	+59 57 52.9	–	V	703
2020-12-17 07:07:22	C	08 28 21.46	+59 58 08.5	–	V	703
2020-12-17 09:16:31	C	08 28 17.76	+60 02 19.5	–	U	I41
2020-12-17 09:42:33	C	08 28 16.96	+60 03 09.9	–	U	I41
2020-12-17 11:57:14	C	08 28 14.07	+60 07 30.5	–	V	T05
2020-12-17 11:59:52	C	08 28 14.01	+60 07 36.0	–	V	T05
2020-12-17 12:03:51	C	08 28 13.81	+60 07 43.4	–	V	T05
2020-12-17 12:11:07	C	08 28 13.54	+60 07 57.5	–	V	T05
2020-12-17 12:18:21	C	08 28 13.32	+60 08 11.3	–	V	T05
2020-12-17 12:35:23	C	08 28 12.84	+60 08 44.3	–	V	T05
2020-12-17 12:43:17	C	08 28 12.58	+60 08 59.7	–	V	T05
2020-12-19 15:10:25	C	08 26 40.38	+61 45 02.1	–	V	T08
2020-12-19 15:15:44	C	08 26 40.09	+61 45 11.6	–	V	T08
2020-12-19 15:33:05	C	08 26 39.39	+61 45 44.0	–	V	T08
2020-12-19 15:40:29	C	08 26 39.02	+61 45 57.4	–	V	T08
2020-12-20 06:21:08	C	08 26 08.27	+62 13 29.7	–	V	703
2020-12-20 06:28:51	C	08 26 07.83	+62 13 45.5	–	V	703
2020-12-20 06:36:33	C	08 26 07.49	+62 13 59.8	–	V	703
2020-12-20 06:44:16	C	08 26 07.04	+62 14 15.2	–	V	703

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21374 (1997 WS22)