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66850 (1999 VX8)
Classification: Main-belt Asteroid          SPK-ID: 2066850
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2582721000384365 5.0478e-08  
a 2.683032079709867 1.7447e-08 au
q 1.990079750012706 1.4015e-07 au
i 13.64637906149278 4.7471e-06 deg
node 171.2518767197905 1.8766e-05 deg
peri 199.7813321742009 2.0597e-05 deg
M 300.371868443642 1.3708e-05 deg
tp 2459466.380156111701
(2021-Sep-08.88015611)
6.3234e-05 TDB
period 1605.229842054412
4.39
1.5658e-05
4.287e-08
d
yr
n .2242669495474015 2.1875e-09 deg/d
Q 3.375984409407028 2.1953e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      9977 days (27.32 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-07-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52222  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:25:20  

Additional Information
 Earth MOID = .992411 au 
 Jupiter MOID = 2.09649 au 
 T_jup = 3.288 
[ 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 14.79   n/a E2021B10  
diameter diameter 6.521 km 0.381 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.495 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.055   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66850 (1999 VX8)          Discovered 1999-Nov-09 by Juels, C. W. at Fountain Hills
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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