2011 SM189

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5945643399 ± 2.00e+00
Semi-major axis (a)2.4573109995 AU ± 3.00e+00
Inclination (i)7.87389903° ± 4.00e+00
Long. of Asc. Node (Ω)190.68502771° ± 5.00e+00
Arg. of Perihelion (ω)132.19649891° ± 6.00e+00
Mean Anomaly (M)251.02404296° ± 1.96e+00
Mean Motion (n)0.2558669300°/day ± 4.69e-01
Perihelion dist (q)0.99628140 AU ± 5.06e+00
Aphelion dist (Q)3.91833860 AU ± 6.86e+00
Orbital Period3.85203230 yr ± 7.05e+00
Physical Parameters
H (abs. magnitude)24.70
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.226″
Uncertainty4
Orbit TypeApollo
MOID0.058328 AU
Observations Used12
Oppositions1
Arc Total2011-2011
First Observation Used
Last Observation Used2011-09-30
Observations (12)
Date Type RA Dec Mag Band Observatory
2011-09-29 08:22:11 C 00 48 22.46 +11 14 47.9 r G96
2011-09-29 08:31:58 C 00 48 24.26 +11 14 18.4 r G96
2011-09-29 08:41:54 C 00 48 26.06 +11 13 48.3 r G96
2011-09-29 08:51:49 C 00 48 27.90 +11 13 18.0 r G96
2011-09-29 09:58:22 C 00 48 40.24 +11 09 55.0 r G96
2011-09-29 10:01:18 C 00 48 40.75 +11 09 46.1 r G96
2011-09-29 10:04:20 C 00 48 41.29 +11 09 36.5 r G96
2011-09-29 10:07:20 C 00 48 41.86 +11 09 27.6 r G96
2011-09-30 06:44:36 C 00 52 43.35 +10 09 34.3 r G96
2011-09-30 06:45:29 C 00 52 43.50 +10 09 31.6 r G96
2011-09-30 06:46:18 C 00 52 43.64 +10 09 29.5 r G96
2011-09-30 06:47:08 C 00 52 43.75 +10 09 27.4 r G96