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90837 (1995 WT4)
Classification: Main-belt Asteroid          SPK-ID: 2090837
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2360697826396915 3.8821e-08  
a 2.755418648125648 1.2e-08 au
q 2.104947566781274 1.0589e-07 au
i 6.540851591861075 3.6447e-06 deg
node 258.2514695909475 3.9302e-05 deg
peri 120.1698100891097 4.0131e-05 deg
M 226.8874741416724 9.5327e-06 deg
tp 2460014.226511121276
(2023-Mar-10.72651112)
4.6763e-05 TDB
period 1670.628234042686
4.57
1.0914e-05
2.988e-08
d
yr
n .2154877983408975 1.4077e-09 deg/d
Q 3.405889729470022 1.4833e-08 au
  Orbit Determination Parameters
   # obs. used (total)      924  
   data-arc span      9334 days (25.56 yr)  
   first obs. used      1995-11-18  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51087  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:11  

Additional Information
 Earth MOID = 1.11583 au 
 Jupiter MOID = 2.11624 au 
 T_jup = 3.293 
[ 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 14.99   n/a MPO637235  
diameter diameter 5.806 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90837 (1995 WT4)          Discovered 1995-Nov-18 by Osservatorio San Vittore at Bologna
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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