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249303 (2008 UG39)
Classification: Main-belt Asteroid          SPK-ID: 2249303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07373197582295159 8.7745e-08  
a 2.25291616136632 1.1649e-08 au
q 2.086804201425322 1.9823e-07 au
i 2.134490573057781 5.2224e-06 deg
node 259.263012459681 0.00019799 deg
peri 295.3394698094273 0.00020329 deg
M 12.96331606443005 4.0055e-05 deg
tp 2458956.023604684357
(2020-Apr-16.52360468)
0.0001375 TDB
period 1235.139391344883
3.38
9.5797e-06
2.623e-08
d
yr
n .2914650787778809 2.2606e-09 deg/d
Q 2.419028121307318 1.2508e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      8853 days (24.24 yr)  
   first obs. used      1996-01-29  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .68627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 13:42:45  

Additional Information
 Earth MOID = 1.08629 au 
 Jupiter MOID = 2.54329 au 
 T_jup = 3.621 
[ 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 18.0   n/a MPO454847  
diameter diameter 1.493 km 0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249303 (2008 UG39)          Discovered 2008-Oct-20 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 UG39 = 2005 YP105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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