AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999HR4 ∴ Summary
Contact »
(59478) 1999HR4  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.66546 9.796e-09 au
e 0.227613 3.327e-08
i 4.409 4.224e-06 deg
Ω 50.001 5.029e-05 deg
ω 281.642 5.108e-05 deg
M 173.064 9.943e-06 deg

More info »
Other useful info
Absolute Magnitude (H)    14.9 mag
Slope parameter (G)    0.15 mag
Perihelion 2.0588 au
Aphelion 3.2721 au
Asc. node-Earth separation 1.42699 au
Desc. node-Earth separation 1.63954 au
Earth MOID 1.05372 au
Orbital period 1589.48 days
Date of orbit computation  apr 23 19:58
Observational summary
Optical observations (Discarded) 1612 (14)
Radar observations (Discarded) 0 (0)
Arc length 9108.87 days
Unobserved 37 days

More info »
Ephemeris at epoch 60425 MJD
Right Ascension 136.994 deg
Declination 21.4531 deg
V Magnitude 20.79 mag
Solar Elongation -98.1 deg
Galactic Latitude 39.17 deg
Rate 0.105 deg/day
Direction 120.904 deg

More info »