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JPL Small-Body Database Browser
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20685 (1999 VX48)
Classification: Main-belt Asteroid          SPK-ID: 2020685
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367476139476892 5.1443e-08  
a 2.812853876360735 1.652e-08 au
q 2.428202820384896 1.479e-07 au
i 10.26219551900934 4.6221e-06 deg
node 268.1323447475655 2.7607e-05 deg
peri 251.4838414868044 3.1901e-05 deg
M 301.8988700259914 1.8024e-05 deg
tp 2458878.600175280856
(2020-Jan-30.10017528)		 8.736e-05 TDB
period 1723.134526744914
4.72		 1.518e-05
4.156e-08		 d
yr
n .2089215870336356 1.8405e-09 deg/d
Q 3.197504932336574 1.8779e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1550  
   data-arc span      15164 days (41.52 yr)  
   first obs. used      1978-06-01  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49812  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:45:59  

Additional Information
 Earth MOID = 1.46172 au 
 Jupiter MOID = 1.94843 au 
 T_jup = 3.283 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3   n/a MPO502322  
diameter diameter 4.701 km 0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.349   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20685 (1999 VX48)          Discovered 1999-Nov-03 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 VX48 = 1978 LE = 1998 QF66 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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