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
2025-09-11 19:35:02 B 18 01 37.60 +52 47 20.7 X L76
2025-09-11 19:40:33 B 18 01 41.05 +52 46 48.7 X L76
2025-09-11 19:46:05 B 18 01 44.46 +52 46 16.6 X L76
2025-09-11 19:51:37 B 18 01 47.87 +52 45 44.1 X L76
2025-09-11 21:49:37 B 18 03 02.827 +52 34 29.17 W Z80
2025-09-11 21:59:36 B 18 03 08.954 +52 33 31.54 W Z80
2025-09-11 22:09:37 B 18 03 15.096 +52 32 32.50 W Z80
2025-09-12 19:10:11 B 18 16 09.01 +50 25 55.6 X L76
2025-09-12 19:13:02 B 18 16 10.70 +50 25 37.6 X L76
2025-09-12 19:15:54 B 18 16 12.42 +50 25 19.2 X L76
2025-09-12 19:18:46 B 18 16 14.05 +50 25 00.6 X L76
2025-09-12 19:21:38 B 18 16 15.77 +50 24 42.5 X L76
2025-09-12 19:24:30 B 18 16 17.39 +50 24 24.3 X L76
2025-09-12 19:27:22 B 18 16 19.14 +50 24 05.5 X L76
2025-09-12 19:30:14 B 18 16 20.83 +50 23 47.3 X L76
2025-09-12 19:33:06 B 18 16 22.51 +50 23 29.0 X L76
2025-09-12 19:35:58 B 18 16 24.23 +50 23 10.6 X L76
2025-09-12 19:38:50 B 18 16 25.90 +50 22 52.5 X L76
2025-09-12 19:41:42 B 18 16 27.57 +50 22 33.8 X L76
2025-09-12 19:50:18 B 18 16 34.203 +50 21 43.94 W G34
2025-09-12 19:53:10 B 18 16 35.858 +50 21 25.77 W G34
2025-09-12 19:56:01 B 18 16 37.531 +50 21 07.68 W G34
2025-09-12 19:58:53 B 18 16 39.202 +50 20 49.29 W G34
2025-09-12 21:55:47 C 18 17 48.439 +50 08 48.73 V R17
2025-09-12 22:34:42 C 18 18 10.918 +50 04 36.73 V R17
2025-09-12 22:55:43 C 18 18 23.110 +50 02 19.68 V R17
2025-09-12 23:17:42 C 18 18 35.839 +49 59 56.33 V R17
2025-09-13 20:53:27 B 18 31 11.210 +47 35 33.97 W Z80
2025-09-13 21:01:29 B 18 31 15.598 +47 34 37.74 W Z80
2025-09-13 21:09:33 B 18 31 20.026 +47 33 41.04 W Z80
2025-09-14 07:10:21 C 18 36 55.934 +46 23 28.54 V T05
2025-09-14 07:14:57 C 18 36 58.366 +46 22 55.20 V T05
2025-09-14 07:22:58 C 18 37 02.659 +46 21 56.95 V T05
2025-09-14 07:41:32 C 18 37 12.547 +46 19 41.52 V T05
2025-09-14 18:01:55 C 18 42 52.33 +45 03 44.5 X C40
2025-09-14 18:04:56 C 18 42 53.91 +45 03 22.0 X C40
2025-09-14 18:07:57 C 18 42 55.49 +45 02 59.4 X C40
2025-09-14 18:10:58 C 18 42 57.05 +45 02 36.9 X C40
2025-09-14 18:13:58 C 18 42 58.64 +45 02 14.3 X C40
2025-09-14 18:16:59 C 18 43 00.21 +45 01 51.8 X C40
2025-09-14 18:20:00 C 18 43 01.79 +45 01 29.0 X C40
2025-09-14 18:22:59 C 18 43 03.35 +45 01 06.7 X C40
2025-09-14 18:26:00 C 18 43 04.91 +45 00 44.0 X C40
2025-09-14 18:29:00 C 18 43 06.48 +45 00 21.6 X C40
2025-09-14 18:32:01 C 18 43 08.06 +44 59 59.0 X C40
2025-09-14 18:35:02 C 18 43 09.62 +44 59 36.4 X C40
2025-09-15 07:00:42 C 18 49 44.594 +43 25 55.81 V T08
2025-09-15 07:05:22 C 18 49 46.932 +43 25 19.56 V T08
2025-09-15 07:16:05 C 18 49 52.279 +43 23 56.22 V T08
2025-09-15 07:32:05 C 18 50 00.276 +43 21 51.44 V T08