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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2356267094188302 4.5565e-08  
a 2.756393965660686 1.2611e-08 au
q 2.106913925670138 1.2335e-07 au
i 6.540014998951412 3.9209e-06 deg
node 258.2632905579097 4.503e-05 deg
peri 120.1713875617237 4.6239e-05 deg
M 141.5529582180085 1.0113e-05 deg
tp 2458343.255725278540
(2018-Aug-12.75572528)
4.5325e-05 TDB
period 1671.515324570759
4.58
1.1471e-05
3.141e-08
d
yr
n .2153734367301999 1.4781e-09 deg/d
Q 3.405874005651233 1.5582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      868  
   data-arc span      8926 days (24.44 yr)  
   first obs. used      1995-11-18  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50868  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:28  

Additional Information
 Earth MOID = 1.11853 au 
 Jupiter MOID = 2.11409 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 15.0   n/a MPO468892  
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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