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66890 (1999 VD81)
Classification: Main-belt Asteroid          SPK-ID: 2066890
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1744398744052941 3.0101e-08  
a 2.880354010356682 1.4981e-08 au
q 2.377905418547277 8.7093e-08 au
i 3.957052231633145 4.5198e-06 deg
node 130.4401380105739 5.8224e-05 deg
peri 293.5336432859731 6.0115e-05 deg
M 111.6215603209793 1.3902e-05 deg
tp 2458646.878666225440
(2019-Jun-12.37866623)
6.846e-05 TDB
period 1785.530318566803
4.89
1.393e-05
3.814e-08
d
yr
n .2016207712949743 1.573e-09 deg/d
Q 3.382802602166088 1.7594e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1290  
   data-arc span      10136 days (27.75 yr)  
   first obs. used      1993-06-22  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49107  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:02:40  

Additional Information
 Earth MOID = 1.39411 au 
 Jupiter MOID = 1.94463 au 
 T_jup = 3.268 
[ 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 14.47   n/a E2021B10  
diameter diameter 3.890 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.244   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66890 (1999 VD81)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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