2015 YC18

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.3264033431 ± 2.00e+00
Semi-major axis (a)	1.3668531740 AU ± 3.00e+00
Inclination (i)	5.41231430° ± 4.00e+00
Long. of Asc. Node (Ω)	57.76542421° ± 5.00e+00
Arg. of Perihelion (ω)	78.92782199° ± 6.00e+00
Mean Anomaly (M)	47.09238725° ± 1.20e-01
Mean Motion (n)	0.6167602400°/day ± 2.03e+00
Perihelion dist (q)	0.92071690 AU ± 3.40e+00
Aphelion dist (Q)	1.81301010 AU ± 4.83e+00
Orbital Period	1.59804030 yr ± 5.26e+00

Physical Parameters

H (abs. magnitude)	24.99
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-04-18
RMS Residual	0.034″
Uncertainty	3
Orbit Type	Apollo
MOID	0.051393 AU
Observations Used	8
Oppositions	1
Arc Total	2016-2016
First Observation Used	—
Last Observation Used	2016-01-07

Observations (15)

Date	Type	RA	Dec	Mag	Band	Observatory
2015-12-26 11:34:06	S	23 50 43.35	+32 38 11.5	–	L	C51
2015-12-26 14:42:58	S	23 49 43.67	+32 43 06.2	–	L	C51
2015-12-26 16:17:24	S	23 49 13.73	+32 45 31.5	–	L	C51
2015-12-26 17:51:50	S	23 48 43.67	+32 47 58.1	–	L	C51
2015-12-26 19:26:17	S	23 48 13.56	+32 50 23.6	–	L	C51
2016-01-02 04:54:35	C	22 54 13.037	+36 21 40.79	–	t	568
2016-01-02 04:56:25	C	22 54 12.286	+36 21 42.63	–	t	568
2016-01-02 04:58:46	C	22 54 11.324	+36 21 45.00	–	t	568
2016-01-03 04:55:07	C	22 44 51.179	+36 47 20.87	–	t	568
2016-01-03 04:57:37	C	22 44 50.113	+36 47 22.92	–	t	568
2016-01-03 05:00:06	C	22 44 49.086	+36 47 25.18	–	t	568
2016-01-04 04:59:37	C	22 35 13.952	+37 10 16.86	–	t	568
2016-01-04 05:02:07	C	22 35 12.881	+37 10 18.65	–	t	568
2016-01-04 05:04:37	C	22 35 11.813	+37 10 20.44	–	t	568
2016-01-07 06:11:33	C	22 04 45.663	+37 59 38.48	–	U	T12