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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .258389111441156 5.0813e-08  
a 2.681756992383578 1.7485e-08 au
q 1.988820186020478 1.4078e-07 au
i 13.64616193973639 4.8738e-06 deg
node 171.2754086854516 1.8806e-05 deg
peri 199.8682532721454 2.0649e-05 deg
M 255.3965673658736 1.3372e-05 deg
tp 2459466.591298416341
(2021-Sep-09.09129842)
6.3252e-05 TDB
period 1604.08567103888
4.39
1.5688e-05
4.295e-08
d
yr
n .2244269159058365 2.1949e-09 deg/d
Q 3.374693798746678 2.2003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9938 days (27.21 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:16:11  

Additional Information
 Earth MOID = .992753 au 
 Jupiter MOID = 2.09692 au 
 T_jup = 3.288 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457216.5 (2015-Jul-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2582961314990757 5.0788e-08  
q 1.988754097342265 1.4061e-07 au
tp 2457864.080531947076
(2017-Apr-20.58053195)
5.1304e-05 TDB
node 171.2942703266106 1.8806e-05 deg
peri 200.1179033506282 2.0656e-05 deg
i 13.6467706285846 4.8742e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9938 days (27.21 yr)  
   first obs. used      1993-03-25  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:16:11  

Additional Information
 Jupiter MOID = 2.09692 au 
 T_jup = 3.288 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.57943300080233E-15 -7.11368651022867E-15 -8.123858855931745E-13 -9.565035689675388E-15 -5.238213525519926E-14 -4.213957659348974E-16
q -7.11368651022867E-15 1.97722564376818E-14 2.640173882108135E-12 2.823833945562804E-14 2.023170296190687E-13 3.015304288809625E-15
tp -8.123858855931745E-13 2.640173882108135E-12 2.632059132033393E-9 -1.396785635540943E-12 4.537922064710441E-10 6.614344683273909E-12
node -9.565035689675388E-15 2.823833945562804E-14 -1.396785635540943E-12 3.53660422828234E-10 -3.436103454767024E-10 2.537241807729366E-11
peri -5.238213525519926E-14 2.023170296190687E-13 4.537922064710441E-10 -3.436103454767024E-10 4.26661928548279E-10 -2.34239469684009E-11
i -4.213957659348974E-16 3.015304288809625E-15 6.614344683273909E-12 2.537241807729366E-11 -2.34239469684009E-11 2.375825451409755E-11

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 14.8   n/a MPO385242  
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. 2019-August); 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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