162117 (1998 SD15)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3447811863 ± 2.00e+00
Semi-major axis (a)0.9326108023 AU ± 3.00e+00
Inclination (i)26.79851824° ± 4.00e+00
Long. of Asc. Node (Ω)183.91077864° ± 5.00e+00
Arg. of Perihelion (ω)35.87830903° ± 6.00e+00
Mean Anomaly (M)164.75818051° ± 8.84e-06
Mean Motion (n)1.0943635356°/day ± 5.28e+00
Perihelion dist (q)0.61106414 AU ± 2.71e+00
Aphelion dist (Q)1.25415746 AU ± 4.44e+00
Orbital Period0.90063882 yr ± 4.35e+00
NGA Modelr2
A2-1.79358396e-06 AU/d²
Physical Parameters
H (abs. magnitude)19.04
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-26
RMS Residual0.292″
Uncertainty0
Orbit TypeAten
MOID0.109327 AU
Observations Used725
Oppositions3
Arc Total1998-2025
First Observation Used1998-09-23
Last Observation Used2025-12-07
Observations (805)
Date Type RA Dec Mag Band Observatory
2016-09-21 22:03:51 C 20 54 22.63 +21 27 10.3 q 006
2016-09-21 22:06:51 C 20 54 23.31 +21 26 39.7 q 006
2016-09-21 22:08:22 C 20 54 23.65 +21 26 24.2 q 006
2016-09-22 19:23:39 C 20 59 26.83 +17 52 04.9 V 160
2016-09-22 19:25:36 C 20 59 27.25 +17 51 45.6 V 160
2016-09-22 19:27:35 C 20 59 27.67 +17 51 26.2 V 160
2016-09-23 19:18:04 C 21 04 42.73 +14 00 28.1 q Z52
2016-09-23 19:25:43 C 21 04 43.66 +13 59 22.4 r 106
2016-09-23 19:40:17 C 21 04 46.53 +13 57 05.0 r 106
2016-09-23 19:55:39 C 21 04 49.62 +13 54 39.3 r 106
2016-09-23 19:56:04 C 21 04 50.32 +13 54 30.1 q Z52
2016-09-23 20:10:36 C 21 04 52.58 +13 52 17.8 r 106
2016-09-24 04:51:54 C 21 06 39.81 +12 31 23.8 q H45
2016-09-24 04:53:43 C 21 06 40.16 +12 31 07.1 q H45
2016-09-24 04:54:33 C 21 06 40.32 +12 30 59.2 q H45
2016-09-24 04:55:19 C 21 06 40.47 +12 30 52.0 q H45
2016-09-24 04:56:13 C 21 06 40.64 +12 30 43.9 q H45
2016-09-24 04:57:01 C 21 06 40.79 +12 30 36.5 q H45
2016-09-25 18:50:27 C 21 14 07.31 +06 56 30.4 q G34
2016-09-25 18:54:41 C 21 14 08.06 +06 55 55.0 q G34
2016-09-25 18:58:55 C 21 14 08.80 +06 55 19.4 q G34
2016-09-25 19:03:09 C 21 14 09.52 +06 54 43.8 q G34
2016-09-25 19:07:24 C 21 14 10.30 +06 54 08.9 q G34
2016-09-25 19:07:39 C 21 14 10.87 +06 54 04.5 q Z52
2016-09-25 19:11:38 C 21 14 10.99 +06 53 32.9 q G34
2016-09-25 19:12:50 C 21 14 11.41 +06 53 29.1 q 160
2016-09-25 19:15:08 C 21 14 11.81 +06 53 09.9 q 160
2016-09-25 19:17:24 C 21 14 12.21 +06 52 50.9 q 160
2016-09-25 19:32:16 C 21 14 15.17 +06 50 39.1 q Z52
2016-09-25 19:57:34 C 21 14 19.57 +06 47 08.0 q Z52
2016-09-25 20:19:20 C 21 14 23.36 +06 44 06.8 q Z52
2016-09-26 03:32:35 C 21 15 42.77 +05 44 50.5 q 703
2016-09-26 03:41:14 C 21 15 44.21 +05 43 40.0 q 703
2016-09-26 03:49:53 C 21 15 45.64 +05 42 29.7 q 703
2016-09-26 03:58:33 C 21 15 47.09 +05 41 19.5 q 703
2016-09-26 19:40:04 C 21 18 33.97 +03 36 10.1 V 160
2016-09-26 19:42:05 C 21 18 34.30 +03 35 54.4 V 160
2016-09-26 19:44:03 C 21 18 34.61 +03 35 39.2 V 160
2016-09-27 08:16:42 C 21 20 41.94 +02 00 22.0 L T05
2016-09-27 08:35:04 C 21 20 44.76 +01 58 04.7 L T05
2016-09-27 08:55:20 C 21 20 47.84 +01 55 33.2 L T05
2016-09-27 09:15:12 C 21 20 50.90 +01 53 05.0 L T05
2016-09-27 09:32:04 C 21 20 53.48 +01 50 59.5 L T05
2016-09-27 20:59:29 C 21 22 48.64 +00 26 54.9 V 160
2016-09-27 21:01:39 C 21 22 48.96 +00 26 39.1 V 160
2016-09-27 21:03:49 C 21 22 49.28 +00 26 23.6 V 160
2016-09-27 23:34:16 C 21 23 14.75 +00 09 30.6 r Y00
2016-09-27 23:35:48 C 21 23 14.95 +00 09 20.9 r Y00
2016-09-27 23:37:11 C 21 23 15.12 +00 09 08.4 r Y00
2016-09-28 20:15:11 C 21 26 30.83 -02 13 41.2 16.7 q K78