2025 YS12

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.3725072740 ± 6.22e-05
Semi-major axis (a)	1.9148369951 AU ± 2.78e-04
Inclination (i)	36.88563772° ± 3.74e-03
Long. of Asc. Node (Ω)	276.33530666° ± 2.07e-03
Arg. of Perihelion (ω)	231.94894004° ± 6.56e-03
Mean Anomaly (M)	311.80073936° ± 1.26e-02
Mean Motion (n)	0.3719756932°/day ± 8.11e-05
Perihelion dist (q)	1.20154629 AU ± 2.11e-04
Aphelion dist (Q)	2.62812770 AU ± 4.00e-04
Orbital Period	2.64970615 yr ± 5.77e-04

Physical Parameters

H (abs. magnitude)	21.43
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-06-03
RMS Residual	0.047″
Uncertainty	2
Orbit Type	Amor
MOID	0.329348 AU
Observations Used	17
Oppositions	1
Arc Total	2025-2026
First Observation Used	2025-12-26
Last Observation Used	2026-01-13

Observations (17)

Date	Type	RA	Dec	Mag	Band	Observatory
2025-12-26 05:46:15	C	02 51 16.924	+46 25 10.29	–	X	F52
2025-12-26 06:00:22	C	02 51 16.811	+46 24 36.11	–	X	F52
2025-12-26 06:14:27	C	02 51 16.657	+46 24 01.98	–	X	F52
2025-12-27 07:12:29	C	02 51 11.856	+45 23 03.79	–	V	T12
2025-12-27 07:20:58	C	02 51 11.792	+45 22 42.71	–	V	T12
2025-12-28 06:16:00	C	02 51 12.941	+44 26 22.38	–	V	T12
2025-12-28 06:18:47	C	02 51 12.933	+44 26 15.54	–	V	T12
2026-01-13 03:37:07	C	03 00 32.418	+28 51 07.10	–	W	H01
2026-01-13 03:42:23	C	03 00 32.629	+28 50 54.73	–	W	H01
2026-01-13 03:57:18	C	03 00 33.212	+28 50 19.87	–	W	H01
2026-01-13 04:06:25	C	03 00 33.561	+28 49 58.54	–	W	H01
2026-01-13 07:01:11	C	03 00 41.075	+28 43 14.65	–	V	T14
2026-01-13 07:02:55	C	03 00 41.142	+28 43 10.58	–	V	T14
2026-01-13 07:04:40	C	03 00 41.206	+28 43 06.47	–	V	T14
2026-01-13 07:06:32	C	03 00 41.272	+28 43 02.14	–	V	T14
2026-01-13 07:08:16	C	03 00 41.341	+28 42 58.12	–	V	T14
2026-01-13 07:10:01	C	03 00 41.411	+28 42 53.98	–	V	T14