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243376 (2008 XA40)
Classification: Main-belt Asteroid          SPK-ID: 2243376
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1121002573597701 4.6055e-08  
a 3.115557077217038 3.4696e-08 au
q 2.766302327041955 1.5569e-07 au
i 4.3103344927541 4.6123e-06 deg
node 62.82573235556686 8.3727e-05 deg
peri 340.0487962820957 8.8057e-05 deg
M 348.7539008571421 2.8451e-05 deg
tp 2458663.248218747271
(2019-Jun-28.74821875)
0.00015911 TDB
period 2008.639481305269
5.50
3.3554e-05
9.187e-08
d
yr
n .1792257910643388 2.9939e-09 deg/d
Q 3.464811827392121 3.8586e-08 au
  Orbit Determination Parameters
   # obs. used (total)      386  
   data-arc span      9866 days (27.01 yr)  
   first obs. used      1991-11-02  
   last obs. used      2018-11-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59235  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:43:49  

Additional Information
 Earth MOID = 1.77508 au 
 Jupiter MOID = 1.91789 au 
 T_jup = 3.204 
[ 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 15.4   n/a MPO454785  
diameter diameter 4.707 km 1.249 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243376 (2008 XA40)          Discovered 2008-Dec-02 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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