AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ O'Brien ∴ Summary
Contact »
(21774) O'Brien  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.33901 7.981e-09 au
e 0.083312 3.595e-08
i 6.66 3.995e-06 deg
Ω 155.687 3.335e-05 deg
ω 267.605 4.162e-05 deg
M 233.294 2.414e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    15.7 mag
Slope parameter (G)    0.15 mag
Perihelion 2.1441 au
Aphelion 2.5339 au
Asc. node-Earth separation 1.34141 au
Desc. node-Earth separation 1.30524 au
Earth MOID 1.16958 au
Orbital period 1306.61 days
Date of orbit computation  feb 22 01:54
Observational summary
Optical observations (Discarded) 130 (1)
Radar observations (Discarded) 3 (1)
Arc length 11233 days
Unobserved 665588 days

More info »
Ephemeris at epoch 60420 MJD
Right Ascension 318.77 deg
Declination -11.5384 deg
V Magnitude 20.77 mag
Solar Elongation 72.49 deg
Galactic Latitude -37.06 deg
Rate 0.347 deg/day
Direction 72.757 deg

More info »