2021 RH12

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.2092639396 ± 3.44e-05
Semi-major axis (a)	1.1421415318 AU ± 3.03e-05
Inclination (i)	3.72838821° ± 7.06e-04
Long. of Asc. Node (Ω)	174.24648065° ± 4.63e-04
Arg. of Perihelion (ω)	246.77091904° ± 1.28e-03
Mean Anomaly (M)	105.62602956° ± 4.59e-02
Mean Motion (n)	0.8074811447°/day ± 3.21e-05
Perihelion dist (q)	0.90313250 AU ± 4.60e-05
Aphelion dist (Q)	1.38115057 AU ± 5.37e-05
Orbital Period	1.22061833 yr ± 4.86e-05

Physical Parameters

H (abs. magnitude)	28.52
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-06-02
RMS Residual	0.117″
Uncertainty	2
Orbit Type	Apollo
MOID	0.000740 AU
Observations Used	15
Oppositions	1
Arc Total	2021-2021
First Observation Used	2021-09-11
Last Observation Used	2021-09-13

Observations (18)

Date	Type	RA	Dec	Mag	Band	Observatory
2021-09-11 06:59:15	C	22 09 59.127	+09 26 12.98	–	U	F52
2021-09-11 07:14:58	C	22 09 56.393	+09 25 44.49	–	U	F52
2021-09-11 07:30:43	C	22 09 53.620	+09 25 15.88	–	U	F52
2021-09-12 08:15:22	C	22 07 19.957	+08 29 33.14	–	V	568
2021-09-12 08:16:46	C	22 07 19.635	+08 29 29.50	–	V	568
2021-09-12 08:18:11	C	22 07 19.317	+08 29 25.90	–	V	568
2021-09-12 08:19:35	C	22 07 18.994	+08 29 22.26	–	V	568
2021-09-12 23:42:18	C	22 05 09.41	+07 40 57.1	–	V	033
2021-09-12 23:44:57	C	22 05 08.84	+07 40 48.3	–	V	033
2021-09-12 23:47:36	C	22 05 08.31	+07 40 39.7	–	V	033
2021-09-13 00:18:09	C	22 04 59.80	+07 39 29.8	–	V	L01
2021-09-13 00:25:49	C	22 04 58.19	+07 39 04.1	–	V	L01
2021-09-13 00:33:30	C	22 04 56.55	+07 38 39.0	–	V	L01
2021-09-13 02:22:08	C	22 05 03.27	+07 42 21.3	–	V	807
2021-09-13 02:23:32	C	22 05 02.92	+07 42 16.7	–	V	807
2021-09-13 02:25:08	C	22 05 02.51	+07 42 11.7	–	V	807
2021-09-13 03:47:11	C	22 05 01.28	+07 29 03.8	–	V	654
2021-09-13 04:04:29	C	22 04 57.22	+07 28 06.7	–	V	654