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
2025-09-04 21:32:17 B 02 58 21.07 +59 58 52.1 X L99
2025-09-04 21:35:47 B 02 58 22.76 +59 58 36.2 X L99
2025-09-04 21:39:17 B 02 58 24.31 +59 58 21.3 X L99
2025-09-04 22:21:27 C 02 58 44.50 +59 55 21.4 X L18
2025-09-04 22:22:22 C 02 58 44.92 +59 55 17.0 X L18
2025-09-04 22:23:17 C 02 58 45.23 +59 55 13.7 X L18
2025-09-04 22:24:11 C 02 58 45.70 +59 55 09.3 X L18
2025-09-04 22:25:06 C 02 58 46.16 +59 55 05.6 X L18
2025-09-05 12:37:09 C 03 05 36.876 +58 50 07.33 V T08
2025-09-05 12:41:57 C 03 05 39.132 +58 49 44.08 V T08
2025-09-05 12:49:59 C 03 05 42.878 +58 49 05.63 V T08
2025-09-05 13:09:34 C 03 05 52.094 +58 47 30.98 V T08
2025-09-05 20:09:05 C 03 09 19.14 +58 11 48.0 V M32
2025-09-05 20:09:24 C 03 09 19.24 +58 11 48.4 X L18
2025-09-05 20:10:12 C 03 09 19.62 +58 11 44.2 X L18
2025-09-05 20:11:01 C 03 09 20.02 +58 11 40.4 X L18
2025-09-05 20:11:20 C 03 09 20.15 +58 11 36.8 V M32
2025-09-05 20:11:49 C 03 09 20.34 +58 11 36.3 X L18
2025-09-05 20:12:38 C 03 09 20.85 +58 11 32.3 X L18
2025-09-05 20:13:35 C 03 09 21.24 +58 11 25.4 V M32
2025-09-05 20:15:50 C 03 09 22.41 +58 11 13.4 V M32
2025-09-05 20:18:05 C 03 09 23.54 +58 11 03.2 V M32
2025-09-05 23:10:31 B 03 10 47.09 +57 56 25.3 X L76
2025-09-05 23:15:48 B 03 10 49.59 +57 55 57.8 X L76
2025-09-05 23:21:06 B 03 10 52.13 +57 55 30.2 X L76
2025-09-05 23:26:24 B 03 10 54.71 +57 55 02.4 X L76
2025-09-05 23:31:40 B 03 10 57.21 +57 54 34.9 X L76
2025-09-05 23:36:56 B 03 10 59.74 +57 54 07.2 X L76
2025-09-06 02:25:53 B 03 12 22.495 +57 39 01.98 V L65
2025-09-06 02:29:42 B 03 12 24.343 +57 38 41.39 V L65
2025-09-06 02:33:31 B 03 12 26.198 +57 38 20.65 V L65
2025-09-06 19:32:54 C 03 20 57.89 +55 59 38.9 V M32
2025-09-06 19:34:39 C 03 20 58.67 +55 59 27.2 V M32
2025-09-06 19:36:23 C 03 20 59.61 +55 59 16.6 V M32
2025-09-06 19:38:07 C 03 21 00.55 +55 59 06.4 V M32
2025-09-06 19:40:25 C 03 21 01.73 +55 58 52.5 V M32
2025-09-06 20:07:58 C 03 21 14.50 +55 56 30.4 X N88
2025-09-06 20:17:41 C 03 21 19.30 +55 55 30.7 X N88
2025-09-06 20:27:23 C 03 21 24.06 +55 54 30.6 X N88
2025-09-06 21:59:25 B 03 22 11.45 +55 44 45.6 X L76
2025-09-06 22:04:41 B 03 22 14.06 +55 44 12.4 X L76
2025-09-06 22:09:57 B 03 22 16.63 +55 43 40.0 X L76
2025-09-06 22:15:12 B 03 22 19.27 +55 43 07.2 X L76
2025-09-06 22:20:27 B 03 22 21.90 +55 42 34.5 X L76
2025-09-06 22:25:42 B 03 22 24.48 +55 42 01.9 X L76
2025-09-06 22:34:45 B 03 22 29.590 +55 40 48.83 W Z80
2025-09-06 22:42:45 B 03 22 33.605 +55 39 58.82 W Z80
2025-09-06 22:50:45 B 03 22 37.632 +55 39 08.93 W Z80
2025-09-07 00:14:39 B 03 23 19.416 +55 30 24.01 V L65
2025-09-07 00:17:59 B 03 23 21.096 +55 30 02.63 V L65