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31148 (1997 UO8)
Classification: Main-belt Asteroid          SPK-ID: 2031148
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08174177408546561 5.8254e-08  
a 2.559076935213985 2.0491e-08 AU
q 2.349893446508398 1.4717e-07 AU
i 15.32744805305149 8.2036e-06 deg
node 39.63459562646678 3.0012e-05 deg
peri 40.55266437718061 8.1608e-05 deg
M 22.96476403556087 7.3933e-05 deg
tp 2456905.114375521881
(2014-Sep-04.61437552)
0.00030687 JED
period 1495.283154616756
4.09
1.7959e-05
4.917e-08
d
yr
n .2407570759347374 2.8917e-09 deg/d
Q 2.768260423919572 2.2166e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      722  
   data-arc span      23687 days (64.85 yr)  
   first obs. used      1950-02-17  
   last obs. used      2014-12-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49437  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:23:17  

Additional Information
 Earth MOID = 1.37999 AU 
 T_jup = 3.381 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.9 mag n/a MPO266109  

31148 (1997 UO8)          Discovered 1997-Oct-23 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 UO8 = 1999 CL128 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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