NEODyS-2

Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ Hephaistos ∴ Summary
Contact »
(2212) Hephaistos  ▹ 
SUMMARY
Keplerian elements
(Epoch 60400.0 MJD)
Value 1-σ variation Units
a 2.16407 3.777e-09 au
e 0.837304 2.153e-08
i 11.477 4.639e-06 deg
Ω 27.412 1.498e-05 deg
ω 209.582 1.479e-05 deg
M 123.284 2.62e-06 deg

More info »
Other useful info
Absolute Magnitude (H)    13.4 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.3521 au
Aphelion distance 3.976 au
Asc. node-Earth separation 1.38411 au
Desc. node-Earth separation -0.62961 au
Earth MOID 0.11518 au
Orbital period 1162.8 days
Date of orbit computation   mag 14 14:32
Observational summary
Optical observations (Discarded) 3859 (7)
Radar observations (Discarded) 0 (0)
Arc length 17923 days
Unobserved 159 days

More info »
Ephemeris
(Epoch 60481 MJD)
Right Ascension 55.7318 deg
Declination 23.6815 deg
V Magnitude 20.27 mag
Solar Elongation 30.18 deg
Galactic Latitude -24.47 deg
Rate 0.218 deg/day
Direction 73.197 deg

More info »