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JPL Small-Body Database Browser
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66964 (1999 XC49)
Classification: Main-belt Asteroid          SPK-ID: 2066964
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06280402826138888 5.0782e-08  
a 3.005242451085079 2.2438e-08 au
q 2.816501119254806 1.5262e-07 au
i 8.766846250644283 4.6167e-06 deg
node 251.8459382261238 4.2373e-05 deg
peri 248.1158140850923 6.2702e-05 deg
M 264.2275087568257 4.7214e-05 deg
tp 2459506.739446858860
(2021-Oct-19.23944686)
0.00025164 TDB
period 1902.907593856479
5.21
2.1312e-05
5.835e-08
d
yr
n .189184173294729 2.1188e-09 deg/d
Q 3.193983782915351 2.3847e-08 au
  Orbit Determination Parameters
   # obs. used (total)      594  
   data-arc span      7823 days (21.42 yr)  
   first obs. used      1998-08-24  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54023  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:07:00  

Additional Information
 Earth MOID = 1.84505 au 
 Jupiter MOID = 1.93173 au 
 T_jup = 3.231 
[ 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 14.6   n/a MPO319850  
diameter diameter 4.118 km 1.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.181   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66964 (1999 XC49)          Discovered 1999-Dec-07 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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