2009 SG18

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6736774041 ± 1.45e-08
Semi-major axis (a)3.0389575465 AU ± 1.18e-08
Inclination (i)57.83485907° ± 8.14e-06
Long. of Asc. Node (Ω)177.38260873° ± 2.48e-06
Arg. of Perihelion (ω)204.63314021° ± 1.17e-05
Mean Anomaly (M)9.09145840° ± 1.53e-06
Mean Motion (n)0.1860481374°/day ± 1.08e-09
Perihelion dist (q)0.99168052 AU ± 4.44e-08
Aphelion dist (Q)5.08623458 AU ± 4.84e-08
Orbital Period5.29769498 yr ± 3.08e-08
Physical Parameters
H (abs. magnitude)17.67
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.265″
Uncertainty0
Orbit TypeApollo
MOID0.022941 AU
Observations Used287
Oppositions13
Arc Total2009-2025
First Observation Used2009-09-21
Last Observation Used2025-09-22
Observations (297)
Date Type RA Dec Mag Band Observatory
2025-09-07 00:21:18 B 03 23 22.728 +55 29 41.64 V L65
2025-09-07 19:41:15 C 03 33 16.07 +53 15 15.5 V M32
2025-09-07 19:42:46 C 03 33 16.86 +53 15 04.2 V M32
2025-09-07 19:44:41 C 03 33 18.01 +53 14 50.3 V M32
2025-09-07 19:46:37 C 03 33 18.93 +53 14 35.6 V M32
2025-09-07 19:48:33 C 03 33 20.00 +53 14 21.1 V M32
2025-09-07 20:03:18 C 03 33 27.57 +53 12 34.3 X L18
2025-09-07 20:03:54 C 03 33 27.89 +53 12 30.1 X L18
2025-09-07 20:04:31 C 03 33 28.32 +53 12 24.9 X L18
2025-09-07 20:05:07 C 03 33 28.50 +53 12 20.8 X L18
2025-09-07 20:05:44 C 03 33 28.93 +53 12 15.8 X L18
2025-09-07 20:59:18 B 03 33 56.45 +53 05 44.5 X L76
2025-09-07 21:07:12 B 03 34 00.51 +53 04 45.5 X L76
2025-09-07 21:15:05 B 03 34 04.54 +53 03 46.2 X L76
2025-09-07 21:22:58 B 03 34 08.52 +53 02 47.7 X L76
2025-09-08 01:51:24 B 03 36 25.615 +52 28 20.78 V L65
2025-09-08 01:54:13 B 03 36 27.043 +52 27 58.72 V L65
2025-09-08 01:57:03 B 03 36 28.450 +52 27 36.58 V L65
2025-09-08 12:59:36 C 03 42 13.615 +50 57 07.16 V T05
2025-09-08 13:05:02 C 03 42 16.349 +50 56 21.16 V T05
2025-09-08 13:13:35 C 03 42 20.671 +50 55 07.90 V T05
2025-09-08 13:31:11 C 03 42 29.513 +50 52 37.09 V T05
2025-09-08 22:47:59 B 03 47 22.286 +49 28 36.12 W Z80
2025-09-08 22:54:35 B 03 47 25.740 +49 27 35.35 W Z80
2025-09-08 23:01:12 B 03 47 29.203 +49 26 34.33 W Z80
2025-09-09 12:38:04 C 03 54 39.086 +47 13 00.34 V T08
2025-09-09 12:46:04 C 03 54 43.188 +47 11 37.61 V T08
2025-09-09 12:50:10 C 03 54 45.269 +47 10 55.45 V T08
2025-09-09 13:10:57 C 03 54 55.877 +47 07 19.85 V T08
2025-09-09 20:53:11 C 03 59 01.65 +45 43 21.2 V M32
2025-09-09 20:54:32 C 03 59 02.42 +45 43 06.0 V M32
2025-09-09 20:55:54 C 03 59 03.12 +45 42 51.0 V M32
2025-09-09 20:57:17 C 03 59 03.90 +45 42 35.6 V M32
2025-09-09 20:58:39 C 03 59 04.57 +45 42 20.7 V M32
2025-09-09 22:05:01 C 03 59 39.578 +45 29 56.87 Z C23
2025-09-09 22:07:20 C 03 59 40.814 +45 29 31.45 Z C23
2025-09-09 22:09:04 C 03 59 41.746 +45 29 11.51 Z C23
2025-09-09 22:11:22 C 03 59 43.015 +45 28 46.06 Z C23
2025-09-09 23:13:30 B 04 00 12.912 +45 17 46.90 X N56
2025-09-09 23:16:29 B 04 00 14.386 +45 17 12.99 X N56
2025-09-09 23:19:10 B 04 00 15.895 +45 16 43.01 X N56
2025-09-10 01:28:16 C 04 01 28.358 +44 51 48.85 V R17
2025-09-10 01:49:59 C 04 01 39.691 +44 47 40.45 V R17
2025-09-10 02:11:22 C 04 01 50.796 +44 43 35.33 V R17
2025-09-10 02:31:08 C 04 02 01.094 +44 39 47.84 V R17
2025-09-10 12:28:57 C 04 07 18.698 +42 39 14.18 V T08
2025-09-10 12:36:25 C 04 07 22.546 +42 37 40.69 V T08
2025-09-10 12:40:25 C 04 07 24.614 +42 36 50.47 V T08
2025-09-10 12:55:40 C 04 07 32.484 +42 33 39.24 V T08
2025-09-10 21:14:59 B 04 11 59.11 +40 44 04.6 X L99