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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1055934301090242 3.3791e-08  
a 2.557513076882732 1.0888e-08 au
q 2.287456498546 8.785e-08 au
i 14.21940456990115 3.9767e-06 deg
node 122.6009376250689 1.343e-05 deg
peri 16.52720984489635 2.1889e-05 deg
M 7.354462198136637 1.828e-05 deg
tp 2459365.980765189486
(2021-May-31.48076519)
7.5787e-05 TDB
period 1493.912707113896
4.09
9.5399e-06
2.612e-08
d
yr
n .2409779355150458 1.5389e-09 deg/d
Q 2.827569655219464 1.2038e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2079  
   data-arc span      12264 days (33.58 yr)  
   first obs. used      1987-11-15  
   last obs. used      2021-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4159  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:25:15  

Additional Information
 Earth MOID = 1.30526 au 
 Jupiter MOID = 2.22304 au 
 T_jup = 3.386 
[ 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 13.23   n/a MPCxxxxx  
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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