2009 SD1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5066514544 ± 2.00e+00
Semi-major axis (a)1.7199505422 AU ± 3.00e+00
Inclination (i)32.04216872° ± 4.00e+00
Long. of Asc. Node (Ω)0.93927522° ± 5.00e+00
Arg. of Perihelion (ω)62.01620318° ± 6.00e+00
Mean Anomaly (M)40.45754078° ± 1.69e-01
Mean Motion (n)0.4369483300°/day ± 1.14e+00
Perihelion dist (q)0.84853700 AU ± 3.74e+00
Aphelion dist (Q)2.59136440 AU ± 5.68e+00
Orbital Period2.25566190 yr ± 5.90e+00
Physical Parameters
H (abs. magnitude)22.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.300″
Uncertainty3
Orbit TypeApollo
MOID0.023332 AU
Observations Used28
Oppositions1
Arc Total2009-2009
First Observation Used
Last Observation Used2009-09-23
Observations (28)
Date Type RA Dec Mag Band Observatory
2009-09-17 10:33:10 C 03 17 48.30 -07 24 26.7 r 703
2009-09-17 10:44:37 C 03 17 51.00 -07 22 07.7 r 703
2009-09-17 10:56:15 C 03 17 53.62 -07 19 47.3 r 703
2009-09-17 11:07:48 C 03 17 56.18 -07 17 25.7 r 703
2009-09-17 11:52:22 C 03 18 06.58 -07 08 20.4 r 703
2009-09-17 11:53:08 C 03 18 06.80 -07 08 12.2 r 703
2009-09-17 11:53:46 C 03 18 06.94 -07 08 04.9 r 703
2009-09-17 11:54:32 C 03 18 07.09 -07 07 54.4 r 703
2009-09-17 13:44:45 C 03 18 37.50 -06 44 53.5 v F65
2009-09-17 13:45:52 C 03 18 37.75 -06 44 39.6 v F65
2009-09-17 13:46:43 C 03 18 37.96 -06 44 28.8 v F65
2009-09-17 13:47:32 C 03 18 38.13 -06 44 19.0 v F65
2009-09-18 11:02:17 C 03 24 40.68 -01 50 54.9 r 703
2009-09-18 11:03:12 C 03 24 40.93 -01 50 41.4 r 703
2009-09-18 11:04:05 C 03 24 41.14 -01 50 28.3 r 703
2009-09-18 11:05:00 C 03 24 41.47 -01 50 13.9 r 703
2009-09-19 07:53:26 C 03 31 50.84 +04 00 21.5 o H55
2009-09-19 08:00:39 C 03 31 53.37 +04 02 37.5 o H55
2009-09-19 08:04:19 C 03 31 54.63 +04 03 46.9 o H55
2009-09-21 13:19:30 C 03 58 51.50 +24 50 08.8 v F65
2009-09-21 13:20:22 C 03 58 52.07 +24 50 33.4 v F65
2009-09-21 13:21:15 C 03 58 52.62 +24 50 57.5 v F65
2009-09-21 13:22:02 C 03 58 53.12 +24 51 20.0 v F65
2009-09-23 01:44:10 C 04 30 58.20 +42 44 54.2 v 204
2009-09-23 01:46:53 C 04 31 01.21 +42 46 16.0 v 204
2009-09-23 01:49:36 C 04 31 04.19 +42 47 37.9 v 204
2009-09-23 01:52:19 C 04 31 07.19 +42 48 59.6 v 204
2009-09-23 01:54:42 C 04 31 09.83 +42 50 11.2 v 204