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249331 (2008 UB355)
Classification: Outer Main-belt Asteroid          SPK-ID: 2249331
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1323535504886097 5.487e-08  
a 3.209247367637273 4.7595e-08 au
q 2.784492084134256 1.8165e-07 au
i 5.355670601973772 5.6257e-06 deg
node 60.27292183596091 6.1923e-05 deg
peri 152.9326801035941 6.5838e-05 deg
M 141.1266109683962 2.446e-05 deg
tp 2457777.291911383461
(2017-Jan-23.79191138)
0.00013319 TDB
period 2099.922260361793
5.75
4.6715e-05
1.279e-07
d
yr
n .1714349177564202 3.8137e-09 deg/d
Q 3.634002651140291 5.3895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      243  
   data-arc span      5348 days (14.64 yr)  
   first obs. used      2005-03-08  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65519  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 02:45:13  

Additional Information
 Earth MOID = 1.7796 au 
 Jupiter MOID = 1.33703 au 
 T_jup = 3.171 
[ 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 15.5   n/a MPO454848  
diameter diameter 3.426 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249331 (2008 UB355)          Discovered 2008-Oct-31 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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