AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1998HB57 ∴ Summary
Contact »
(18701) 1998HB57  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.01815 1.257e-08 au
e 0.05952 3.259e-08
i 6.963 3.957e-06 deg
Ω 202.755 2.542e-05 deg
ω 125.589 4.028e-05 deg
M 224.584 3.197e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    13.6 mag
Slope parameter (G)    0.15 mag
Perihelion 2.8385 au
Aphelion 3.1978 au
Asc. node-Earth separation 2.11272 au
Desc. node-Earth separation 1.91064 au
Earth MOID 1.8349 au
Orbital period 1915.18 days
Date of orbit computation  apr 23 19:50
Observational summary
Optical observations (Discarded) 2756 (9)
Radar observations (Discarded) 0 (0)
Arc length 11288.1 days
Unobserved 34 days

More info »
Ephemeris at epoch 60426 MJD
Right Ascension 181.985 deg
Declination -2.67536 deg
V Magnitude 18.52 mag
Solar Elongation -146.93 deg
Galactic Latitude 58.4 deg
Rate 0.138 deg/day
Direction -52.187 deg

More info »