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JPL Small-Body Database Browser
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20680 (1999 VX9)
Classification: Main-belt Asteroid          SPK-ID: 2020680
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1054525003461118 3.6151e-08  
a 2.556626686419821 1.311e-08 au
q 2.287024009885256 9.1737e-08 au
i 14.21929273125059 4.1164e-06 deg
node 122.6028303159326 1.4309e-05 deg
peri 16.82803872129318 2.4254e-05 deg
M 175.1594719961037 2.1318e-05 deg
tp 2457874.008511976695
(2017-Apr-30.50851198)
8.5725e-05 TDB
period 1493.136127369734
4.09
1.1485e-05
3.144e-08
d
yr
n .2411032680819033 1.8545e-09 deg/d
Q 2.826229362954386 1.4492e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1618  
   data-arc span      11701 days (32.04 yr)  
   first obs. used      1987-11-15  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45037  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 00:09:11  

Additional Information
 Earth MOID = 1.30471 au 
 Jupiter MOID = 2.22644 au 
 T_jup = 3.387 
[ 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 13.2   n/a MPO502322  
diameter diameter 5.795 km 0.270 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.332   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20680 (1999 VX9)          Discovered 1999-Nov-09 by Juels, C. W. at Fountain Hills
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VX9 = 1994 ND2 = 1998 MX29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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