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66949 (1999 XO7)
Classification: Main-belt Asteroid          SPK-ID: 2066949
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 .1570517088869878 2.2014e-08  
a 2.662407400178091 1.0634e-08 au
q 2.244271768226759 6.2562e-08 au
i 12.3472022964866 8.5378e-07 deg
node 3.390296593825961 5.1137e-06 deg
peri 69.43178217630074 1.0332e-05 deg
M 318.8489769882954 7.9127e-06 deg
tp 2459381.879554108509
(2021-Jun-16.37955411)
3.5239e-05 TDB
period 1586.756165466185
4.34
9.5061e-06
2.603e-08
d
yr
n .2268779588414159 1.3592e-09 deg/d
Q 3.080543032129422 1.2304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1794  
   data-arc span      8134 days (22.27 yr)  
   first obs. used      1998-11-06  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:26:07  

Additional Information
 Earth MOID = 1.29116 au 
 Jupiter MOID = 2.31838 au 
 T_jup = 3.335 
[ 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 13.30   n/a MPCxxxxx  
diameter diameter 6.548 km 0.306 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66949 (1999 XO7)          Discovered 1999-Dec-04 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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