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JPL Small-Body Database Browser
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15490 (1999 CJ81)
Classification: Main-belt Asteroid          SPK-ID: 2015490
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2914735282313512 4.6363e-08  
a 2.587705089807694 1.2517e-08 au
q 1.83345755725922 1.2593e-07 au
i 4.592941752139059 4.7269e-06 deg
node 221.3734546798824 4.3163e-05 deg
peri 194.5171228533865 4.4067e-05 deg
M 108.1109952704723 9.3411e-06 deg
tp 2458543.897839972958
(2019-Mar-01.39783997)
3.7075e-05 TDB
period 1520.444587513944
4.16
1.1032e-05
3.02e-08
d
yr
n .2367728511491698 1.718e-09 deg/d
Q 3.341952622356168 1.6166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1668  
   data-arc span      12506 days (34.24 yr)  
   first obs. used      1985-11-07  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51877  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:19:44  

Additional Information
 Earth MOID = .845603 au 
 Jupiter MOID = 2.03117 au 
 T_jup = 3.356 
[ 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 14.3   n/a MPO332963  
diameter diameter 3.952 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.259   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15490 (1999 CJ81)          Discovered 1999-Feb-12 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CJ81 = 1985 VD2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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