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90805 (1994 WP8)
Classification: Main-belt Asteroid          SPK-ID: 2090805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05411860292271578 6.675e-08  
a 3.08630000087758 2.3657e-08 au
q 2.919273756629709 2.1967e-07 au
i 10.63546497642204 4.7556e-06 deg
node 200.9277957462239 2.2193e-05 deg
peri 174.6294147178061 4.3974e-05 deg
M 7.492588943570347 3.8165e-05 deg
tp 2459355.282177786237
(2021-May-20.78217779)
0.00020988 TDB
period 1980.412392660082
5.42
2.277e-05
6.234e-08
d
yr
n .1817803207727101 2.0901e-09 deg/d
Q 3.253326245125451 2.4937e-08 au
  Orbit Determination Parameters
   # obs. used (total)      561  
   data-arc span      13108 days (35.89 yr)  
   first obs. used      1985-01-18  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:41:59  

Additional Information
 Earth MOID = 1.92 au 
 Jupiter MOID = 2.03636 au 
 T_jup = 3.198 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.08   n/a MPCxxxxx  
diameter diameter 3.766 km 0.681 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.150   0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90805 (1994 WP8)          Discovered 1994-Nov-28 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1994 WP8 = 1985 BD1 = 1999 TV33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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