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
2016-10-19 06:54:00 C 22 19 31.033 -27 56 26.10 L F51
2016-10-19 07:08:52 C 22 19 32.151 -27 56 43.70 L F51
2016-10-19 07:23:42 C 22 19 33.268 -27 57 01.24 L F51
2016-10-19 07:38:31 C 22 19 34.386 -27 57 18.69 L F51
2016-10-25 12:52:49 C 22 31 36.47 -30 14 42.2 q Q60
2016-10-25 13:06:41 C 22 31 37.52 -30 14 50.7 q Q60
2016-10-25 13:20:33 C 22 31 38.53 -30 15 00.7 q Q60
2016-10-26 06:21:31 C 22 32 59.530 -30 26 48.24 L F51
2016-10-26 06:28:02 C 22 32 59.990 -30 26 52.50 L F51
2016-10-26 06:34:31 C 22 33 00.448 -30 26 56.72 L F51
2016-10-26 06:40:59 C 22 33 00.909 -30 27 00.96 L F51
2016-11-29 05:21:16 C 23 34 06.953 -31 22 37.62 U T12
2016-11-29 05:22:17 C 23 34 07.027 -31 22 37.32 U T12
2016-11-29 05:23:41 C 23 34 07.127 -31 22 37.00 U T12
2017-09-20 11:15:20 C 04 41 43.50 +04 08 57.9 q 703
2017-09-20 11:23:10 C 04 41 43.71 +04 08 39.3 q 703
2017-09-20 11:30:59 C 04 41 43.76 +04 08 20.4 q 703
2017-09-26 12:31:57 C 04 44 15.00 -01 56 09.3 L T05
2017-09-26 12:33:21 C 04 44 14.89 -01 56 13.2 L T05
2017-09-26 12:40:50 C 04 44 15.06 -01 56 33.1 L T05
2017-09-26 12:50:27 C 04 44 15.03 -01 56 58.5 L T05
2017-09-26 12:51:46 C 04 44 15.05 -01 57 01.5 L T05
2017-09-26 13:01:24 C 04 44 15.14 -01 57 27.7 L T05
2017-10-02 09:53:18 C 04 44 28.54 -08 23 34.2 q 703
2017-10-02 10:00:43 C 04 44 28.50 -08 23 56.7 q 703
2017-10-02 10:08:08 C 04 44 28.40 -08 24 17.5 q 703
2017-10-11 08:59:48 C 04 39 54.15 -18 50 00.0 U 703
2017-10-11 09:06:56 C 04 39 53.78 -18 50 21.7 U 703
2017-10-11 09:14:04 C 04 39 53.55 -18 50 42.4 U 703
2017-10-11 09:21:11 C 04 39 53.20 -18 51 04.0 U 703
2017-10-11 12:54:08 C 04 39 45.21 -19 01 27.8 L T05
2017-10-11 13:15:10 C 04 39 44.32 -19 02 29.6 L T05
2017-10-11 13:26:59 C 04 39 43.75 -19 03 05.7 L T05
2017-10-11 13:28:18 C 04 39 43.68 -19 03 08.4 L T05
2017-10-14 09:06:42 C 04 36 50.83 -22 21 34.1 U 703
2017-10-14 09:13:59 C 04 36 50.52 -22 21 55.0 U 703
2017-10-14 09:21:11 C 04 36 50.07 -22 22 15.9 U 703
2017-10-14 09:28:22 C 04 36 49.73 -22 22 36.9 U 703
2017-10-17 12:29:00 C 04 32 45.82 -25 58 35.8 L T08
2017-10-17 12:49:27 C 04 32 44.47 -25 59 34.4 L T08
2017-10-17 13:02:38 C 04 32 43.50 -26 00 10.5 L T08
2017-10-17 13:07:55 C 04 32 43.19 -26 00 27.2 L T08
2018-08-12 14:27:19 C 04 31 17.986 +15 17 45.85 U F51
2018-08-12 14:30:07 C 04 31 18.272 +15 17 44.06 U F51
2018-08-12 14:33:50 C 04 31 18.681 +15 17 41.66 U F51
2018-08-12 14:36:37 C 04 31 18.983 +15 17 39.81 U F51
2018-08-12 14:40:21 C 04 31 19.372 +15 17 37.21 U F51
2018-08-12 14:43:08 C 04 31 19.683 +15 17 35.53 U F51
2018-08-12 14:49:37 C 04 31 20.376 +15 17 31.27 U F51
2025-02-21 00:26:07 C 01 39 57.872 -08 25 37.69 V W84