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
2025-08-21 14:19:14 C 00 55 04.354 +69 04 36.70 V T05
2025-08-24 23:15:21 C 01 17 13.94 +68 26 17.0 V 157
2025-08-24 23:22:55 C 01 17 16.13 +68 26 12.3 V 157
2025-08-24 23:30:28 C 01 17 18.30 +68 26 07.8 V 157
2025-08-24 23:38:02 C 01 17 20.48 +68 26 03.2 V 157
2025-08-24 23:45:35 C 01 17 22.65 +68 25 58.7 V 157
2025-08-24 23:53:09 C 01 17 24.83 +68 25 54.0 V 157
2025-08-25 00:00:43 C 01 17 26.99 +68 25 49.3 V 157
2025-08-25 00:08:16 C 01 17 29.15 +68 25 44.2 V 157
2025-08-26 06:44:53 C 01 26 52.15 +68 03 07.9 V U55
2025-08-26 06:56:31 C 01 26 55.75 +68 02 58.9 V U55
2025-08-26 07:08:09 C 01 26 59.39 +68 02 50.1 V U55
2025-08-28 20:03:56 C 01 47 28.50 +66 59 35.3 Z L04
2025-08-28 20:12:28 C 01 47 31.53 +66 59 24.9 Z L04
2025-08-28 20:20:53 C 01 47 34.45 +66 59 14.7 Z L04
2025-08-30 11:53:54 C 02 02 14.722 +66 01 08.51 V T08
2025-08-30 11:58:35 C 02 02 16.464 +66 01 00.62 V T08
2025-08-30 12:06:06 C 02 02 19.186 +66 00 48.02 V T08
2025-08-30 12:20:23 C 02 02 24.559 +66 00 24.66 V T08
2025-08-31 01:34:31 C 02 07 34.17 +65 36 43.7 V 157
2025-08-31 01:39:35 C 02 07 36.11 +65 36 34.3 V 157
2025-08-31 01:44:38 C 02 07 38.03 +65 36 25.1 V 157
2025-08-31 01:49:42 C 02 07 39.98 +65 36 15.7 V 157
2025-08-31 01:54:46 C 02 07 41.92 +65 36 06.4 V 157
2025-08-31 01:59:50 C 02 07 43.82 +65 35 57.0 V 157
2025-08-31 02:04:53 C 02 07 45.76 +65 35 47.7 V 157
2025-08-31 02:09:57 C 02 07 47.71 +65 35 38.1 V 157
2025-09-01 20:04:49 C 02 25 05.12 +64 03 54.2 V M32
2025-09-01 20:08:04 C 02 25 06.49 +64 03 46.0 V M32
2025-09-01 20:11:19 C 02 25 07.92 +64 03 38.1 V M32
2025-09-01 20:14:35 C 02 25 09.31 +64 03 30.5 V M32
2025-09-01 20:18:18 C 02 25 10.87 +64 03 21.2 V M32
2025-09-02 21:41:41 B 02 36 15.05 +62 53 04.0 X L99
2025-09-02 21:45:21 B 02 36 16.55 +62 52 54.4 X L99
2025-09-02 21:48:34 B 02 36 18.02 +62 52 43.6 X L99
2025-09-02 21:51:46 B 02 36 19.35 +62 52 34.7 X L99
2025-09-03 12:21:05 C 02 42 50.700 +62 06 28.33 V T08
2025-09-03 12:33:08 C 02 42 56.006 +62 05 48.48 V T08
2025-09-03 12:49:52 C 02 43 03.310 +62 04 52.61 V T08
2025-09-03 19:43:55 B 02 46 14.36 +61 40 18.7 X L99
2025-09-03 19:46:43 B 02 46 15.65 +61 40 08.3 X L99
2025-09-03 19:49:07 B 02 46 17.01 +61 39 59.2 X L99
2025-09-03 19:51:31 B 02 46 18.11 +61 39 51.1 X L99
2025-09-03 22:08:17 C 02 47 21.45 +61 31 45.5 V 104
2025-09-03 22:19:25 C 02 47 26.54 +61 31 06.0 V 104
2025-09-03 22:30:25 C 02 47 31.57 +61 30 27.0 V 104
2025-09-04 00:15:28 C 02 48 21.036 +61 24 06.55 V R17
2025-09-04 00:37:01 C 02 48 30.881 +61 22 49.30 V R17
2025-09-04 00:58:52 C 02 48 40.834 +61 21 30.46 V R17
2025-09-04 01:20:32 C 02 48 50.683 +61 20 12.01 V R17