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
2025-09-21 19:07:24 C 19 56 19.051 +20 51 45.11 Z C23
2025-09-23 07:08:15 C 20 08 03.847 +15 38 10.82 V T05
2025-09-23 07:22:13 C 20 08 07.970 +15 36 11.52 V T05
2025-09-23 07:36:54 C 20 08 12.293 +15 34 06.17 V T05
2025-09-23 07:39:31 C 20 08 13.061 +15 33 43.88 V T05
2025-09-24 19:42:49 C 20 18 56.266 +10 36 21.17 V M22
2025-09-24 19:46:45 C 20 18 57.312 +10 35 49.74 V M22
2025-09-24 19:55:14 C 20 18 59.594 +10 34 41.66 V M22
2025-09-24 20:21:28 C 20 19 06.694 +10 31 11.78 V M22
2025-09-25 21:42:31 B 20 26 05.453 +07 13 05.16 X J51
2025-09-25 21:53:54 B 20 26 08.328 +07 11 39.08 X J51
2025-09-25 22:05:18 B 20 26 11.182 +07 10 13.01 X J51
2025-09-27 19:13:43 B 20 37 34.56 +01 47 37.9 X L99
2025-09-27 19:17:20 B 20 37 35.34 +01 47 13.7 X L99
2025-09-27 19:20:42 B 20 37 36.11 +01 46 50.8 X L99
2025-09-27 20:20:04 B 20 37 51.814 +01 40 29.35 X J51
2025-09-27 20:36:09 B 20 37 55.394 +01 38 41.42 X J51
2025-09-27 20:52:14 B 20 37 59.011 +01 36 53.75 X J51
2025-09-28 01:36:23 C 20 39 05.486 +01 06 16.88 V W68
2025-09-28 01:39:40 C 20 39 06.276 +01 05 55.86 V W68
2025-09-28 01:43:36 C 20 39 07.138 +01 05 30.16 V W68
2025-09-28 01:57:28 C 20 39 10.231 +01 03 58.46 V W68
2025-09-28 02:08:01 C 20 39 12.586 +01 02 48.66 V W68
2025-09-28 19:57:36 C 20 43 20.702 -00 52 53.80 Z J69
2025-09-28 20:06:30 C 20 43 22.603 -00 53 48.80 Z J69
2025-09-28 20:15:27 C 20 43 24.557 -00 54 44.57 Z J69
2025-09-28 20:24:24 C 20 43 26.513 -00 55 41.05 Z J69
2025-09-29 19:31:26 B 20 48 32.438 -03 15 20.68 W G34
2025-09-29 19:33:58 B 20 48 32.941 -03 15 35.58 W G34
2025-09-29 19:36:29 B 20 48 33.479 -03 15 50.04 W G34
2025-09-29 19:39:00 B 20 48 33.986 -03 16 04.87 W G34
2025-09-30 19:23:25 C 20 53 32.690 -05 28 26.26 V M22
2025-09-30 19:28:43 C 20 53 33.708 -05 28 54.95 V M22
2025-09-30 19:38:53 C 20 53 35.664 -05 29 50.10 V M22
2025-09-30 19:55:13 C 20 53 39.521 -05 32 20.54 Z C23
2025-09-30 20:02:56 C 20 53 40.310 -05 32 00.17 V M22
2025-09-30 20:19:44 C 20 53 44.359 -05 34 32.59 Z C23
2025-09-30 20:23:11 C 20 53 45.036 -05 34 51.46 Z C23
2025-10-01 05:51:36 C 20 55 40.925 -06 24 53.03 V T08
2025-10-01 05:53:35 C 20 55 41.282 -06 25 03.36 V T08
2025-10-01 06:00:49 C 20 55 42.646 -06 25 41.05 V T08
2025-10-01 06:19:17 C 20 55 46.094 -06 27 17.78 V T08
2025-10-06 03:04:57 C 21 16 43.596 -14 53 38.94 V W68
2025-10-06 03:08:58 C 21 16 44.220 -14 53 53.34 V W68
2025-10-06 03:33:17 C 21 16 47.959 -14 55 18.98 V W68
2025-10-06 03:40:24 C 21 16 49.068 -14 55 43.93 V W68
2025-10-07 08:01:01 C 21 21 18.374 -16 32 09.60 V T08
2025-10-07 08:04:58 C 21 21 18.948 -16 32 22.31 V T08
2025-10-07 08:12:51 C 21 21 20.090 -16 32 47.98 V T08
2025-10-07 08:26:42 C 21 21 22.056 -16 33 31.97 V T08