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
1998-09-28 06:36:59 C 22 42 36.99 -00 20 19.5 z 670
1998-09-28 06:52:15 C 22 42 36.90 -00 22 17.2 z 670
1998-09-28 07:06:44 C 22 42 36.78 -00 24 08.9 z 670
1998-09-29 03:20:08 C 22 42 47.733 -02 53 33.40 l I02
1998-09-29 03:50:44 C 22 42 50.24 -02 58 15.6 z 670
1998-09-29 04:03:44 C 22 42 50.23 -02 59 48.6 z 670
1998-09-29 05:23:00 C 22 42 49.87 -03 09 14.7 z 670
1998-09-29 05:32:59 C 22 42 49.86 -03 10 26.0 z 670
1998-09-29 19:31:48 C 22 42 58.96 -04 47 40.6 046
1998-09-29 19:33:10 C 22 42 58.95 -04 47 49.5 046
1998-09-29 19:34:31 C 22 42 58.95 -04 47 59.1 046
1998-09-29 19:35:36 C 22 42 58.94 -04 48 06.6 046
1998-10-01 04:29:44 C 22 43 19.916 -08 16 30.59 l I02
1998-10-01 11:31:35 C 22 43 28.03 -08 59 01.4 z 402
1998-10-01 11:33:36 C 22 43 28.03 -08 59 12.9 z 402
1998-10-01 11:35:36 C 22 43 28.04 -08 59 24.6 z 402
1998-10-09 20:53:19 C 22 47 25.07 -22 40 45.5 046
1998-10-09 20:55:52 C 22 47 25.12 -22 40 53.2 046
1998-10-09 20:57:17 C 22 47 25.15 -22 40 57.2 046
1998-10-09 20:58:48 C 22 47 25.17 -22 41 01.2 046
1998-10-13 12:32:54 C 22 49 48.87 -26 05 30.7 422
1998-10-13 12:35:13 C 22 49 48.93 -26 05 35.3 422
1998-10-21 11:52:03 C 22 56 19.94 -30 41 17.9 422
1998-10-21 11:53:19 C 22 56 20.03 -30 41 19.1 422
1998-10-21 11:54:36 C 22 56 20.08 -30 41 20.4 422
1998-10-21 12:15:14 C 22 56 21.31 -30 42 05.2 360
1998-10-21 12:18:44 C 22 56 21.44 -30 42 08.9 360
1998-10-21 12:22:30 C 22 56 21.60 -30 42 12.2 360
1999-08-25 02:19:20 C 04 15 27.83 +21 48 40.9 557
1999-08-25 02:22:42 C 04 15 27.98 +21 48 37.9 557
1999-08-25 02:29:25 C 04 15 28.56 +21 48 28.5 557
1999-08-26 02:32:58 C 04 17 13.61 +21 16 59.5 557
1999-08-26 02:39:40 C 04 17 13.92 +21 16 52.9 557
1999-08-26 02:43:02 C 04 17 14.23 +21 16 50.3 557
1999-09-14 02:51:31 C 04 45 20.26 +09 04 33.3 557
1999-09-14 02:54:54 C 04 45 20.42 +09 04 26.5 557
1999-10-17 15:51:51 C 04 54 56.70 -24 18 44.3 413
1999-10-17 15:53:50 C 04 54 56.60 -24 18 49.9 413
2006-09-27 02:18:23 C 16 35 05.38 +02 35 59.9 r 448
2006-09-27 02:49:43 C 16 35 13.72 +02 35 07.1 r 448
2006-09-27 03:08:30 C 16 35 18.67 +02 34 33.7 r 448
2007-09-08 19:53:28 C 19 58 17.27 +75 35 52.1 c 157
2007-09-08 19:56:47 C 19 58 19.86 +75 35 33.0 c 157
2007-09-12 03:09:52 C 20 48 12.69 +66 42 02.2 m H51
2007-09-12 03:11:46 C 20 48 13.48 +66 41 46.8 m H51
2007-09-12 03:15:23 C 20 48 14.94 +66 41 18.5 m H51
2007-09-12 03:17:13 C 20 48 15.76 +66 41 03.6 m H51
2007-09-12 06:42:27 C 20 49 40.26 +66 13 44.4 r H45
2007-09-12 06:43:13 C 20 49 40.56 +66 13 38.0 r H45
2007-09-12 06:44:00 C 20 49 40.88 +66 13 31.2 r H45