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
2007-09-20 18:39:05 C 21 41 19.40 +30 50 57.2 r 113
2007-09-21 11:31:55 C 21 43 44.27 +27 36 51.1 r 379
2007-09-21 11:34:50 C 21 43 44.59 +27 36 17.3 r 379
2007-09-21 11:44:40 C 21 43 45.81 +27 34 25.4 r 379
2007-09-21 11:46:08 C 21 43 45.95 +27 34 08.5 r 379
2007-09-21 11:47:36 C 21 43 46.14 +27 33 51.9 r 379
2007-09-21 11:52:01 C 21 43 46.64 +27 33 01.8 r 379
2007-09-21 19:30:07 C 21 44 50.44 +26 05 38.0 c 196
2007-09-21 20:01:24 C 21 44 52.78 +25 59 32.4 r 084
2007-09-21 20:14:21 C 21 44 55.79 +25 57 17.3 c 196
2007-09-21 20:48:59 C 21 45 00.64 +25 50 39.5 o J65
2007-09-21 21:08:11 C 21 45 02.16 +25 47 07.5 c 196
2007-09-21 21:23:04 C 21 45 04.76 +25 44 13.3 o J65
2007-09-22 11:54:17 C 21 46 59.41 +23 01 32.4 r 379
2007-09-22 12:04:32 C 21 47 00.48 +22 59 39.0 r 379
2007-09-22 12:07:43 C 21 47 00.88 +22 59 02.8 r 379
2007-09-22 18:40:18 C 21 47 52.41 +21 46 25.5 r A78
2007-09-22 18:45:17 C 21 47 52.98 +21 45 30.8 r A78
2007-09-22 18:49:27 C 21 47 53.45 +21 44 45.1 r A78
2007-09-22 18:55:14 C 21 47 54.05 +21 43 41.7 r A78
2007-09-22 19:01:56 C 21 47 54.77 +21 42 28.2 r A78
2007-09-22 19:14:17 C 21 47 55.83 +21 40 04.9 o 639
2007-09-22 19:18:31 C 21 47 56.30 +21 39 18.7 o 639
2007-09-22 19:24:12 C 21 47 56.94 +21 38 16.2 o 639
2007-09-22 19:35:23 C 21 47 58.19 +21 36 14.0 o 639
2007-09-22 19:44:44 C 21 47 59.22 +21 34 31.1 o 639
2007-09-23 19:45:05 C 21 50 52.97 +17 16 30.6 r 473
2007-09-23 19:46:32 C 21 50 53.13 +17 16 15.5 r 473
2007-09-23 19:47:50 C 21 50 53.27 +17 16 01.8 r 473
2007-09-24 18:59:28 C 21 53 30.52 +13 18 44.7 r B38
2007-09-24 19:03:40 C 21 53 30.92 +13 18 03.1 r B38
2007-09-24 19:07:38 C 21 53 31.31 +13 17 24.0 r B38
2007-09-24 19:12:34 C 21 53 31.76 +13 16 34.9 r B38
2007-09-24 19:17:54 C 21 53 32.27 +13 15 42.1 r B38
2007-09-24 19:22:05 C 21 53 32.67 +13 15 00.5 r B38
2007-09-24 19:33:25 C 21 53 33.44 +13 13 01.3 o 639
2007-09-24 19:43:39 C 21 53 34.44 +13 11 19.5 o 639
2007-09-24 19:45:44 C 21 53 34.66 +13 10 59.0 o 639
2007-09-24 19:55:41 C 21 53 35.62 +13 09 20.4 o 639
2007-09-24 19:58:43 C 21 53 35.90 +13 08 50.0 o 639
2007-09-24 22:38:54 C 21 53 50.85 +12 42 15.8 r 084
2007-09-24 22:40:39 C 21 53 51.05 +12 41 58.6 r 084
2007-09-24 22:41:32 C 21 53 51.12 +12 41 49.8 r 084
2007-09-25 01:11:44 C 21 54 06.60 +12 17 10.1 r 084
2007-09-25 18:46:58 C 21 55 59.87 +09 29 02.8 r 084
2007-09-25 21:20:57 C 21 56 14.04 +09 05 10.4 r 084
2007-09-25 21:22:41 C 21 56 14.20 +09 04 54.4 r 084
2007-09-27 04:16:45 C 21 59 16.14 +04 31 44.5 r H51
2007-09-27 04:18:03 C 21 59 16.28 +04 31 31.0 r H51
2007-09-27 04:19:23 C 21 59 16.36 +04 31 21.2 r H51