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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0817417787455873 5.7516e-08  
a 2.559076931050306 1.8751e-08 AU
q 2.349893430759455 1.4386e-07 AU
i 15.32744935660316 7.2276e-06 deg
node 39.63459523449071 2.9538e-05 deg
peri 40.5526532369971 7.8087e-05 deg
M 22.96477737518131 6.9011e-05 deg
tp 2456905.114320347702
(2014-Sep-04.61432035)
0.00028659 JED
period 1495.283150967464
4.09
1.6435e-05
4.5e-08
d
yr
n .2407570765223137 2.6461e-09 deg/d
Q 2.768260431341156 2.0284e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      762  
   data-arc span      23811 days (65.19 yr)  
   first obs. used      1950-02-17  
   last obs. used      2015-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49087  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 17:03:55  

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
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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