AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999JF21 ∴ Summary
Contact »
(23978) 1999JF21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.65174 7.988e-09 au
e 0.232494 2.714e-08
i 6.323 3.15e-06 deg
Ω 228.735 2.632e-05 deg
ω 137.811 2.723e-05 deg
M 141.5 7.25e-06 deg

More info »
Other useful info
Absolute Magnitude (H)    13.4 mag
Slope parameter (G)    0.15 mag
Perihelion 2.0352 au
Aphelion 3.2683 au
Asc. node-Earth separation 2.02044 au
Desc. node-Earth separation 1.15069 au
Earth MOID 1.0396 au
Orbital period 1577.23 days
Date of orbit computation  apr 23 19:51
Observational summary
Optical observations (Discarded) 3894 (172)
Radar observations (Discarded) 0 (0)
Arc length 16194.4 days
Unobserved 37 days

More info »
Ephemeris at epoch 60427 MJD
Right Ascension 148.464 deg
Declination 5.63806 deg
V Magnitude 18.98 mag
Solar Elongation -111.6 deg
Galactic Latitude 42.66 deg
Rate 0.057 deg/day
Direction 62.365 deg

More info »