2018 SH3

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.3997411695 ± 6.80e-04
Semi-major axis (a)	1.6107789876 AU ± 1.87e-03
Inclination (i)	22.37593413° ± 2.38e-02
Long. of Asc. Node (Ω)	4.99408107° ± 3.25e-04
Arg. of Perihelion (ω)	49.57431688° ± 1.83e-02
Mean Anomaly (M)	157.55193515° ± 2.14e+00
Mean Motion (n)	0.4821235466°/day ± 8.40e-04
Perihelion dist (q)	0.96688431 AU ± 1.57e-03
Aphelion dist (Q)	2.25467366 AU ± 2.84e-03
Orbital Period	2.04434380 yr ± 3.56e-03

Physical Parameters

H (abs. magnitude)	25.30
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-06-02
RMS Residual	0.262″
Uncertainty	4
Orbit Type	Apollo
MOID	0.061174 AU
Observations Used	18
Oppositions	1
Arc Total	2018-2018
First Observation Used	2018-09-30
Last Observation Used	2018-10-02

Observations (18)

Date	Type	RA	Dec	Mag	Band	Observatory
2018-09-30 06:37:13	C	23 38 42.16	+05 46 48.9	–	V	G96
2018-09-30 06:45:16	C	23 38 37.99	+05 48 41.9	–	V	G96
2018-09-30 06:53:18	C	23 38 33.81	+05 50 36.1	–	V	G96
2018-09-30 07:01:20	C	23 38 29.66	+05 52 29.5	–	V	G96
2018-09-30 09:40:53	C	23 37 07.53	+06 30 12.2	–	V	I52
2018-09-30 09:43:41	C	23 37 06.11	+06 30 52.2	–	V	I52
2018-09-30 22:46:10	C	23 30 35.72	+09 40 41.5	–	V	L01
2018-09-30 22:50:13	C	23 30 33.48	+09 41 41.9	–	V	L01
2018-09-30 22:54:28	C	23 30 31.21	+09 42 44.5	–	V	L01
2018-10-01 03:39:28	C	23 28 05.00	+10 54 03.2	–	u	H21
2018-10-01 03:44:59	C	23 28 01.91	+10 55 26.5	–	u	H21
2018-10-01 03:49:51	C	23 27 59.20	+10 56 39.8	–	u	H21
2018-10-01 03:54:43	C	23 27 56.44	+10 57 53.3	–	u	H21
2018-10-01 03:59:54	C	23 27 53.52	+10 59 11.8	–	u	H21
2018-10-02 04:37:39	C	23 14 03.43	+17 20 15.6	–	u	H21
2018-10-02 04:43:23	C	23 13 59.84	+17 21 46.4	–	u	H21
2018-10-02 04:49:10	C	23 13 56.25	+17 23 17.4	–	u	H21
2018-10-02 04:54:50	C	23 13 52.71	+17 24 46.8	–	u	H21