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
2025-09-10 21:16:14 B 04 11 59.75 +40 43 49.0 X L99
2025-09-10 21:17:29 B 04 12 00.50 +40 43 31.7 X L99
2025-09-11 01:52:05 B 04 14 25.558 +39 40 50.34 V L65
2025-09-11 01:54:18 B 04 14 26.695 +39 40 19.70 V L65
2025-09-11 01:56:30 B 04 14 27.862 +39 39 48.82 V L65
2025-09-11 12:41:16 C 04 20 13.337 +37 03 32.94 V T05
2025-09-11 12:46:03 C 04 20 15.802 +37 02 21.05 V T05
2025-09-11 12:53:53 C 04 20 19.855 +37 00 22.50 V T05
2025-09-11 13:06:13 C 04 20 26.196 +36 57 17.24 V T08
2025-09-11 13:13:12 C 04 20 29.810 +36 55 31.58 V T08
2025-09-11 13:23:12 C 04 20 34.990 +36 52 58.73 V T05
2025-09-11 13:27:26 C 04 20 37.138 +36 51 55.69 V T08
2025-09-11 13:43:01 C 04 20 45.154 +36 47 58.34 V T08
2025-09-11 23:01:52 B 04 25 45.463 +34 19 41.70 W J37
2025-09-11 23:21:34 B 04 25 56.042 +34 14 20.76 W J37
2025-09-11 23:31:29 B 04 26 01.332 +34 11 39.48 W J37
2025-09-11 23:52:28 B 04 26 12.475 +34 05 57.08 W J37
2025-09-12 00:02:17 B 04 26 17.681 +34 03 16.60 W J37
2025-09-12 00:22:39 B 04 26 28.488 +33 57 43.42 W J37
2025-09-12 00:43:50 B 04 26 39.679 +33 51 55.26 W J37
2025-09-12 20:13:33 C 04 37 01.25 +28 06 30.3 q 168
2025-09-12 20:45:37 C 04 37 18.11 +27 56 28.1 q 168
2025-09-12 21:48:37 C 04 37 51.14 +27 36 37.1 q 168
2025-09-12 22:02:46 C 04 37 59.94 +27 32 03.6 V M32
2025-09-12 22:03:56 C 04 38 00.54 +27 31 41.3 V M32
2025-09-12 22:05:06 C 04 38 01.14 +27 31 19.5 V M32
2025-09-12 22:05:32 C 04 37 59.99 +27 31 16.3 q 168
2025-09-12 22:06:16 C 04 38 01.75 +27 30 56.6 V M32
2025-09-12 22:07:27 C 04 38 02.42 +27 30 33.6 V M32
2025-09-12 22:17:34 C 04 38 06.27 +27 27 27.7 q 168
2025-09-14 13:51:31 C 04 58 55.577 +13 32 54.64 V T08
2025-09-14 14:05:32 C 04 59 02.616 +13 27 35.32 V T08
2025-09-14 14:10:11 C 04 59 04.942 +13 25 49.44 V T08
2025-09-14 14:27:15 C 04 59 13.478 +13 19 19.81 V T08
2025-09-15 08:54:41 C 05 08 45.252 +06 10 09.30 V W68
2025-09-15 08:59:54 C 05 08 47.839 +06 08 06.07 V W68
2025-09-15 09:09:07 C 05 08 52.399 +06 04 28.38 V W68
2025-09-15 09:23:20 C 05 08 59.414 +05 58 52.61 V W68
2025-09-15 09:49:04 C 05 09 12.096 +05 48 44.78 V W68
2025-09-18 07:47:59 C 05 43 49.999 -20 12 57.46 V W68
2025-09-18 07:55:42 C 05 43 53.568 -20 15 28.40 V W68
2025-09-18 08:00:19 C 05 43 55.694 -20 16 58.40 V W68
2025-09-18 08:10:11 C 05 44 00.206 -20 20 10.10 V W68
2025-09-22 07:58:25 C 06 26 13.620 -43 03 52.20 V W68
2025-09-22 08:03:02 C 06 26 15.425 -43 04 37.31 V W68
2025-09-22 08:44:03 C 06 26 31.584 -43 11 18.89 V W68
2025-09-22 09:13:57 C 06 26 43.277 -43 16 10.06 V W68