101869 (1999 MM)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6107336517 ± 3.16e-08
Semi-major axis (a)1.6242011118 AU ± 1.97e-09
Inclination (i)4.76544416° ± 8.51e-06
Long. of Asc. Node (Ω)110.91986363° ± 2.50e-05
Arg. of Perihelion (ω)268.83811916° ± 2.48e-05
Mean Anomaly (M)243.17677701° ± 1.30e-05
Mean Motion (n)0.4761596288°/day ± 8.67e-10
Perihelion dist (q)0.63224684 AU ± 5.13e-08
Aphelion dist (Q)2.61615539 AU ± 5.13e-08
Orbital Period2.06994929 yr ± 3.77e-09
Physical Parameters
H (abs. magnitude)19.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.494″
Uncertainty0
Orbit TypeApollo
MOID0.001640 AU
Observations Used187
Oppositions10
Arc Total1999-2019
First Observation Used1999-06-12
Last Observation Used2019-04-06
Observations (207)
Date Type RA Dec Mag Band Observatory
2008-02-12 04:04:56 C 04 27 16.16 +24 22 40.9 r G96
2008-02-12 04:13:09 C 04 27 18.46 +24 22 48.6 r G96
2008-02-12 04:21:20 C 04 27 20.84 +24 22 56.2 r G96
2008-02-12 04:29:39 C 04 27 23.11 +24 23 03.1 r G96
2019-04-06 09:32:17 C 13 15 54.24 +00 16 51.4 1 T09
2019-04-06 11:37:54 C 13 15 46.85 +00 17 36.9 1 T09
2019-04-06 12:56:27 C 13 15 42.22 +00 18 05.3 1 T09