NEODyS-2

Near Earth Objects - Dynamic Site
NEODyS ∴ Objects ∴ 1997WB21 ∴ Summary
Contact »
(380128) 1997WB21  ▹ 
SUMMARY
Keplerian elements
(Epoch 59000.0 MJD)
Value 1-σ variation Units
a 1.46061 1.223e-09 au
e 0.317353 2.157e-08
i 3.391 3.102e-06 deg
Ω 281.037 3.491e-05 deg
ω 81.841 3.657e-05 deg
M 300.257 4.466e-06 deg

More info »
Other useful info
Absolute Magnitude (H)    20.4 mag
Slope parameter (G)    0.15 mag
Perihelion distance 0.9971 au
Aphelion distance 1.9241 au
Asc. node-Earth separation 0.24017 au
Desc. node-Earth separation 0.39266 au
Earth MOID 0.0513 au
Orbital period 644.763 days
Date of orbit computation   Jan 19 13:41
Observational summary
Optical observations (Discarded) 385 (0)
Radar observations (Discarded) 0 (0)
Arc length 8454 days
Unobserved 6 days

More info »
Ephemeris
(Epoch 59238 MJD)
Right Ascension 91.9353 deg
Declination 21.5664 deg
V Magnitude 20.89 mag
Solar Elongation -147.83 deg
Galactic Latitude 0.62 deg
Rate 0.099 deg/day
Direction -125.418 deg

More info »