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20020 (1991 VT)
Classification: Main-belt Asteroid          SPK-ID: 2020020
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 43 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1905657387482246 2.3522e-08  
a 2.600703546053582 1.146e-08 au
q 2.105098553534754 6.3901e-08 au
i 15.56957897005814 7.7026e-07 deg
node 66.3535281555902 1.1899e-06 deg
peri 300.7763600769891 3.6293e-06 deg
M 5.579197840295097 3.445e-06 deg
tp 2459176.758729143898
(2020-Nov-23.25872914)
1.458e-05 TDB
period 1531.915116267768
4.19
1.0125e-05
2.772e-08
d
yr
n .2349999658447619 1.5533e-09 deg/d
Q 3.096308538572411 1.3644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2314  
   data-arc span      10719 days (29.35 yr)  
   first obs. used      1991-10-31  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40538  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:11:28  

Additional Information
 Earth MOID = 1.15008 au 
 Jupiter MOID = 2.47413 au 
 T_jup = 3.338 
[ 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 13.20   n/a E2021B10  
diameter diameter 6.371 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20020 (1991 VT)          Discovered 1991-Nov-04 by Mizuno, Y., Furuta, T. at Kani
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 VT = 1998 HV145 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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