AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1998HM31 ∴ Summary
Contact »
(412990) 1998HM31  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.3404 1.234e-08 au
e 0.150373 4.575e-08
i 7.23 5.947e-06 deg
Ω 78.978 3.917e-05 deg
ω 97.177 4.401e-05 deg
M 121.688 2.015e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    17.5 mag
Slope parameter (G)    0.15 mag
Perihelion 1.9885 au
Aphelion 2.6923 au
Asc. node-Earth separation 1.34753 au
Desc. node-Earth separation 1.22982 au
Earth MOID 1.00818 au
Orbital period 1307.78 days
Date of orbit computation  feb 22 03:17
Observational summary
Optical observations (Discarded) 311 (0)
Radar observations (Discarded) 0 (0)
Arc length 9178.9 days
Unobserved 312 days

More info »
Ephemeris at epoch 60419 MJD
Right Ascension 337.71 deg
Declination -14.8743 deg
V Magnitude 22.9 mag
Solar Elongation 55.38 deg
Galactic Latitude -55.12 deg
Rate 0.366 deg/day
Direction 73.34 deg

More info »