AstDyS-2

Asteroids - Dynamic Site
AstDyS ∴ Objects ∴ 1999XQ221 ∴ Summary
Contact »
(49957) 1999XQ221  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 2.56633 7.912e-09 au
e 0.190007 3.043e-08
i 5.726 3.02e-06 deg
Ω 37.641 3.761e-05 deg
ω 168.538 3.891e-05 deg
M 221.124 1.266e-05 deg

More info »
Other useful info
Absolute Magnitude (H)    14.8 mag
Slope parameter (G)    0.15 mag
Perihelion 2.0787 au
Aphelion 3.0539 au
Asc. node-Earth separation 2.04776 au
Desc. node-Earth separation 1.07849 au
Earth MOID 1.07482 au
Orbital period 1501.64 days
Date of orbit computation  feb 22 02:00
Observational summary
Optical observations (Discarded) 2506 (255)
Radar observations (Discarded) 0 (0)
Arc length 9234.95 days
Unobserved 101 days

More info »
Ephemeris at epoch 60423 MJD
Right Ascension 49.7969 deg
Declination 19.9834 deg
V Magnitude 20.55 mag
Solar Elongation -19.7 deg
Galactic Latitude -30.84 deg
Rate 0.37 deg/day
Direction 73.504 deg

More info »