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129995 (1999 VA20)
Classification: Main-belt Asteroid          SPK-ID: 2129995
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509221466518104 5.0283e-08  
a 2.629419767073748 1.2486e-08 au
q 2.232582091378274 1.3408e-07 au
i 14.33582757493181 6.0081e-06 deg
node 55.68419948795002 1.5097e-05 deg
peri 211.8113612797174 2.1521e-05 deg
M 63.46204830336834 1.4727e-05 deg
tp 2458725.963623924319
(2019-Aug-30.46362392)
6.3693e-05 TDB
period 1557.357476310759
4.26
1.1093e-05
3.037e-08
d
yr
n .2311607999293828 1.6465e-09 deg/d
Q 3.026257442769221 1.437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      715  
   data-arc span      7630 days (20.89 yr)  
   first obs. used      1999-11-01  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55608  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:29:57  

Additional Information
 Earth MOID = 1.22953 au 
 Jupiter MOID = 2.06456 au 
 T_jup = 3.341 
[ 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 15.2   n/a MPO475137  
diameter diameter 2.271 km 0.492 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.155 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129995 (1999 VA20)          Discovered 1999-Nov-10 by Korlevic, K. at Visnjan
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

Alternate Designations
 1999 VA20 = 2002 JH59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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