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249356 (2008 YZ31)
Classification: Main-belt Asteroid          SPK-ID: 2249356
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2058634750390216 8.7072e-08  
a 2.333371899766707 1.5625e-08 au
q 1.853015851922329 2.0049e-07 au
i 20.9629200365872 7.554e-06 deg
node 291.2053878819357 2.2744e-05 deg
peri 247.2624879467609 2.7363e-05 deg
M 26.26340101732194 1.7502e-05 deg
tp 2458905.522040218071
(2020-Feb-26.02204022)
6.311e-05 TDB
period 1301.890242582951
3.56
1.3077e-05
3.58e-08
d
yr
n .2765210063221304 2.7774e-09 deg/d
Q 2.813727947611085 1.8841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      219  
   data-arc span      6681 days (18.29 yr)  
   first obs. used      2002-01-12  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5229  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:43:24  

Additional Information
 Earth MOID = .952977 au 
 Jupiter MOID = 2.46071 au 
 T_jup = 3.454 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO413153  
diameter diameter 2.230 km 0.497 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.118   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249356 (2008 YZ31)          Discovered 2008-Dec-30 by BATTeRS at Bisei SG Center
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

Alternate Designations
 2008 YZ31 = 2002 AK196 = 2003 UQ330 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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