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
2025-10-07 20:28:47 C 21 23 12.722 -17 10 58.98 V M22
2025-10-07 20:34:30 C 21 23 13.555 -17 11 16.08 V M22
2025-10-07 20:42:20 C 21 23 14.674 -17 11 40.74 V M22
2025-10-07 20:56:12 C 21 23 16.670 -17 12 23.08 V M22
2025-10-08 03:55:34 C 21 24 20.794 -17 34 22.22 V G96
2025-10-08 04:03:51 C 21 24 21.942 -17 34 47.21 V G96
2025-10-08 04:12:10 C 21 24 23.105 -17 35 11.98 V G96
2025-10-08 04:20:25 C 21 24 24.271 -17 35 37.07 V G96
2025-10-09 08:14:28 C 21 28 29.227 -18 55 45.26 V T05
2025-10-09 08:18:28 C 21 28 29.753 -18 55 56.06 V T05
2025-10-09 08:26:23 C 21 28 30.823 -18 56 17.81 V T05
2025-10-09 08:46:33 C 21 28 33.550 -18 57 12.96 V T05
2025-10-10 08:58:56 C 21 31 58.502 -20 00 55.66 V T05
2025-10-10 09:04:54 C 21 31 59.266 -20 01 09.44 V T05
2025-10-10 09:13:28 C 21 32 00.377 -20 01 31.30 V T05
2025-10-10 09:30:36 C 21 32 02.666 -20 02 14.14 V T05
2025-10-10 20:13:06 C 21 33 32.002 -20 28 20.28 V M22
2025-10-10 20:17:00 C 21 33 32.496 -20 28 29.64 V M22
2025-10-10 20:30:44 C 21 33 34.243 -20 29 03.01 V M22
2025-10-10 20:38:41 C 21 33 35.273 -20 29 22.24 V M22
2025-10-12 02:14:04 C 21 37 33.554 -21 37 58.22 V W68
2025-10-12 02:18:04 C 21 37 34.054 -21 38 07.01 V W68
2025-10-12 02:27:25 C 21 37 35.218 -21 38 27.24 V W68
2025-10-12 02:44:13 C 21 37 37.272 -21 39 03.82 V W68
2025-10-13 07:33:39 C 21 41 21.103 -22 40 03.65 V T08
2025-10-13 07:37:36 C 21 41 21.576 -22 40 11.46 V T08
2025-10-13 07:45:30 C 21 41 22.522 -22 40 27.52 V T08
2025-10-13 08:04:39 C 21 41 24.744 -22 41 04.85 V T08
2025-10-13 20:13:35 C 21 42 56.755 -23 04 27.88 V M22
2025-10-13 20:18:43 C 21 42 57.394 -23 04 37.52 V M22
2025-10-13 20:25:24 C 21 42 58.183 -23 04 50.52 V M22
2025-10-13 20:39:07 C 21 42 59.760 -23 05 16.58 V M22
2025-10-15 08:18:19 C 21 47 22.193 -24 10 14.56 V T05
2025-10-15 08:22:56 C 21 47 22.651 -24 10 22.12 V T05
2025-10-15 08:30:51 C 21 47 23.525 -24 10 35.72 V T05
2025-10-15 08:50:03 C 21 47 25.769 -24 11 07.51 V T05
2025-10-16 02:45:07 C 21 49 35.198 -24 40 50.63 V 703
2025-10-16 02:51:49 C 21 49 36.012 -24 41 01.07 V 703
2025-10-16 02:55:10 C 21 49 36.390 -24 41 05.14 V 703
2025-10-16 20:06:05 C 21 51 36.166 -25 07 28.20 V M22
2025-10-16 20:10:12 C 21 51 36.588 -25 07 33.64 V M22
2025-10-16 20:17:35 C 21 51 37.435 -25 07 45.16 V M22
2025-10-16 20:52:08 C 21 51 41.218 -25 08 36.31 V M22
2025-10-19 19:53:24 C 21 59 40.231 -26 44 26.88 V M22
2025-10-19 19:57:24 C 21 59 40.663 -26 44 31.16 V M22
2025-10-19 20:04:41 C 21 59 41.434 -26 44 39.73 V M22
2025-10-19 20:19:17 C 21 59 42.898 -26 44 57.26 V M22
2025-10-24 01:34:35 C 22 10 20.299 -28 27 27.04 V W68
2025-10-24 01:39:25 C 22 10 20.738 -28 27 32.94 V W68
2025-10-24 01:48:35 C 22 10 21.602 -28 27 38.48 V W68