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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2060479973780749 1.0479e-07  
a 2.333774910754177 2.596e-08 au
q 1.852905264062083 2.5167e-07 au
i 20.96196850416652 8.34e-06 deg
node 291.2055379637335 2.4325e-05 deg
peri 247.2372691270103 4.0538e-05 deg
M 275.697979050611 4.682e-05 deg
tp 2458905.445593441267
(2020-Feb-25.94559344)
0.00017333 TDB
period 1302.227543332124
3.57
2.1728e-05
5.949e-08
d
yr
n .2764493823244104 4.6126e-09 deg/d
Q 2.81464455744627 3.1309e-08 au
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      6199 days (16.97 yr)  
   first obs. used      2002-01-12  
   last obs. used      2019-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51542  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:32:30  

Additional Information
 Earth MOID = .953229 au 
 Jupiter MOID = 2.46134 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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