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
2009-09-21 04:06:53 C 17 42 30.20 +34 36 01.4 r 703
2009-09-21 04:13:47 C 17 42 30.70 +34 35 43.6 r 703
2009-09-21 04:20:53 C 17 42 31.10 +34 35 27.1 r 703
2009-09-21 04:27:59 C 17 42 31.71 +34 35 09.0 r 703
2009-09-21 05:13:37 C 17 42 34.81 +34 33 19.5 r 703
2009-09-21 05:16:22 C 17 42 35.10 +34 33 15.1 r 703
2009-09-21 05:17:45 C 17 42 35.17 +34 33 10.9 r 703
2009-09-21 20:11:55 C 17 43 40.92 +33 57 07.8 r J95
2009-09-21 20:25:53 C 17 43 41.94 +33 56 33.8 r J95
2009-09-21 20:42:18 C 17 43 43.11 +33 55 53.2 r J95
2009-09-21 20:58:00 C 17 43 44.14 +33 55 15.6 v 204
2009-09-21 21:06:52 C 17 43 44.78 +33 54 54.0 v 204
2009-09-22 03:15:09 C 17 44 12.31 +33 39 57.9 o 673
2009-09-22 03:23:31 C 17 44 12.79 +33 39 38.2 o 673
2009-09-22 03:39:31 C 17 44 14.11 +33 38 57.4 o 673
2009-09-22 03:48:17 C 17 44 14.63 +33 38 36.4 o 673
2009-09-22 21:06:57 C 17 45 32.43 +32 55 46.3 c 587
2009-09-22 21:10:35 C 17 45 32.74 +32 55 37.3 c 587
2009-09-22 21:13:34 C 17 45 32.99 +32 55 29.7 c 587
2009-09-24 03:23:28 C 17 47 52.31 +31 39 21.5 o 291
2009-09-24 03:29:52 C 17 47 52.81 +31 39 05.1 o 291
2009-09-24 03:40:58 C 17 47 53.65 +31 38 36.4 o 291
2009-09-24 20:31:14 C 17 49 13.39 +30 55 05.5 r J95
2009-09-24 20:39:38 C 17 49 14.10 +30 54 43.6 r J95
2009-09-24 20:48:01 C 17 49 14.71 +30 54 21.3 r J95
2009-09-25 02:58:12 C 17 49 44.28 +30 38 20.2 o 291
2009-09-25 03:05:34 C 17 49 44.85 +30 38 01.1 o 291
2009-09-26 04:07:07 C 17 51 46.26 +29 31 45.3 r G96
2009-09-26 04:17:43 C 17 51 47.12 +29 31 16.9 r G96
2009-09-26 04:39:05 C 17 51 48.81 +29 30 19.5 r G96
2009-09-27 03:10:54 C 17 53 41.04 +28 29 25.6 o 291
2009-09-27 03:17:48 C 17 53 41.61 +28 29 06.9 o 291
2009-09-27 03:26:02 C 17 53 42.23 +28 28 43.8 o 291
2009-09-28 02:14:33 C 17 55 38.23 +27 25 49.1 c 926
2009-09-28 02:18:25 C 17 55 38.58 +27 25 37.9 c 926
2009-09-28 02:22:19 C 17 55 38.90 +27 25 27.3 c 926
2009-09-29 03:06:54 C 17 57 47.05 +26 15 45.1 o 291
2009-09-29 03:13:01 C 17 57 47.61 +26 15 27.9 o 291
2009-09-29 03:19:22 C 17 57 48.11 +26 15 10.1 o 291
2009-09-29 18:59:42 C 17 59 10.98 +25 30 13.5 r J95
2009-09-29 19:15:28 C 17 59 12.33 +25 29 27.7 r J95
2009-09-29 19:31:08 C 17 59 13.71 +25 28 42.6 r J95
2009-09-30 01:03:52 C 17 59 43.26 +25 12 43.6 o H55
2009-09-30 01:07:01 C 17 59 43.50 +25 12 34.5 o H55
2009-09-30 01:12:59 C 17 59 43.98 +25 12 17.4 o H55
2009-09-30 02:29:44 C 17 59 50.85 +25 08 34.8 o 291
2009-09-30 02:39:18 C 17 59 51.70 +25 08 07.9 o 291
2009-09-30 02:45:58 C 17 59 52.26 +25 07 48.3 o 291
2009-10-01 01:12:25 C 18 01 53.25 +24 02 02.6 o H55
2009-10-01 01:19:15 C 18 01 53.90 +24 01 43.1 o H55