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
2025-09-15 20:31:25 C 18 56 38.60 +41 39 19.3 X C40
2025-09-15 20:33:26 C 18 56 39.57 +41 39 03.2 X C40
2025-09-15 20:35:27 C 18 56 40.56 +41 38 46.7 X C40
2025-09-15 20:39:28 C 18 56 42.53 +41 38 14.5 X C40
2025-09-15 20:43:29 C 18 56 44.55 +41 37 41.6 X C40
2025-09-15 20:45:30 C 18 56 45.53 +41 37 25.4 X C40
2025-09-15 20:49:31 C 18 56 47.52 +41 36 53.0 X C40
2025-09-15 20:51:32 C 18 56 48.52 +41 36 36.6 X C40
2025-09-16 07:01:24 C 19 01 52.966 +40 15 12.31 V T08
2025-09-16 07:06:30 C 19 01 55.361 +40 14 30.52 V T08
2025-09-16 07:14:39 C 19 01 59.182 +40 13 23.27 V T08
2025-09-16 07:42:20 C 19 02 12.170 +40 09 34.92 V T08
2025-09-17 01:40:02 B 19 10 47.671 +37 39 32.40 W X04
2025-09-17 01:44:22 B 19 10 49.618 +37 38 55.61 W X04
2025-09-17 01:53:15 B 19 10 53.621 +37 37 40.22 W X04
2025-09-17 07:16:58 C 19 13 23.174 +36 52 18.23 V T08
2025-09-17 07:20:57 C 19 13 24.926 +36 51 44.03 V T08
2025-09-17 07:30:18 C 19 13 29.033 +36 50 23.46 V T08
2025-09-17 07:42:23 C 19 13 34.390 +36 48 38.59 V T05
2025-09-17 07:46:16 C 19 13 36.053 +36 48 05.90 V T08
2025-09-17 07:46:21 C 19 13 36.142 +36 48 04.25 V T05
2025-09-17 07:54:37 C 19 13 39.790 +36 46 53.11 V T05
2025-09-17 08:15:48 C 19 13 49.094 +36 43 49.94 V T05
2025-09-17 21:09:56 B 19 19 38.17 +34 51 57.3 V 130
2025-09-17 21:11:18 B 19 19 38.76 +34 51 45.4 V 130
2025-09-17 21:14:01 B 19 19 39.91 +34 51 21.6 V 130
2025-09-17 21:15:43 B 19 19 40.66 +34 51 06.6 V 130
2025-09-18 07:44:37 C 19 24 14.712 +33 19 40.62 V T05
2025-09-18 07:48:50 C 19 24 16.440 +33 19 03.14 V T05
2025-09-18 08:22:22 C 19 24 30.250 +33 14 04.52 V T05
2025-09-18 19:52:33 C 19 29 23.842 +31 31 34.10 Z C23
2025-09-18 19:54:52 C 19 29 24.732 +31 31 13.40 Z C23
2025-09-18 19:57:11 C 19 29 25.694 +31 30 52.81 Z C23
2025-09-18 20:44:30 C 19 29 44.724 +31 23 48.88 Z C23
2025-09-18 20:47:24 C 19 29 45.883 +31 23 23.32 Z C23
2025-09-18 21:22:07 C 19 29 59.834 +31 18 12.53 Z C23
2025-09-18 21:23:16 C 19 30 00.353 +31 18 01.84 Z C23
2025-09-19 19:01:18 C 19 38 43.745 +28 03 52.34 Z C23
2025-09-19 19:04:10 C 19 38 44.832 +28 03 27.22 Z C23
2025-09-19 19:11:07 C 19 38 47.472 +28 02 25.30 Z C23
2025-09-19 20:37:44 C 19 39 20.018 +27 49 23.74 Z C23
2025-09-19 20:39:27 C 19 39 20.642 +27 49 07.86 Z C23
2025-09-19 20:40:37 C 19 39 21.127 +27 48 57.71 Z C23
2025-09-20 01:26:04 B 19 41 11.84 +27 06 13.1 Z W37
2025-09-20 01:50:01 B 19 41 20.66 +27 02 36.1 Z W37
2025-09-21 02:52:37 B 19 50 35.980 +23 16 56.42 X H89
2025-09-21 04:04:37 B 19 51 00.822 +23 06 06.62 X H89
2025-09-21 19:01:36 C 19 56 17.141 +20 52 37.13 Z C23
2025-09-21 19:03:55 C 19 56 17.911 +20 52 16.25 Z C23
2025-09-21 19:05:38 C 19 56 18.473 +20 52 00.95 Z C23