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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .291567112290035 4.1173e-08  
a 2.587316331787026 1.1008e-08 au
q 1.832939980347037 1.1104e-07 au
i 4.593432507585008 4.6038e-06 deg
node 221.3714344713391 4.2574e-05 deg
peri 194.4885515248593 4.35e-05 deg
M 155.5111799634398 9.168e-06 deg
tp 2458543.853191805770
(2019-Mar-01.35319181)
3.576e-05 TDB
period 1520.101969552916
4.16
9.7013e-06
2.656e-08
d
yr
n .2368262177213554 1.5114e-09 deg/d
Q 3.341692683227016 1.4218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1814  
   data-arc span      12616 days (34.54 yr)  
   first obs. used      1985-11-07  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50721  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:33:19  

Additional Information
 Earth MOID = .844324 au 
 Jupiter MOID = 2.03245 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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