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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1918727624346213 4.8578e-08  
a 2.600766418179893 1.4117e-08 au
q 2.101750181076521 1.2931e-07 au
i 15.58144675026424 5.0632e-06 deg
node 66.37860185351781 1.5221e-05 deg
peri 300.8344276256925 1.8662e-05 deg
M 224.6416008261754 1.2447e-05 deg
tp 2459176.514158810892
(2020-Nov-23.01415881)
5.4663e-05 TDB
period 1531.970667779743
4.19
1.2473e-05
3.415e-08
d
yr
n .2349914444000037 1.9133e-09 deg/d
Q 3.099782655283264 1.6825e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1780  
   data-arc span      10153 days (27.80 yr)  
   first obs. used      1991-10-31  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43619  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 01:29:02  

Additional Information
 Earth MOID = 1.14737 au 
 Jupiter MOID = 2.46746 au 
 T_jup = 3.337 
[ 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 13.1   n/a MPO344461  
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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