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15257 (1990 RQ8)
Classification: Main-belt Asteroid          SPK-ID: 2015257
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1717593253071318 6.315e-08  
a 3.140188564701433 2.8564e-08 au
q 2.600831895491145 2.0085e-07 au
i 1.280745610881028 6.7831e-06 deg
node 7.951370423864009 0.00023951 deg
peri 325.4683238603083 0.00023988 deg
M 248.2367837647504 1.9492e-05 deg
tp 2458231.498619052935
(2018-Apr-22.99861905)
0.00011415 JED
period 2032.506852531071
5.56
2.7732e-05
7.593e-08
d
yr
n .1771211740573931 2.4167e-09 deg/d
Q 3.679545233911722 3.347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      9341 days (25.57 yr)  
   first obs. used      1990-09-15  
   last obs. used      2016-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52653  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:21:36  

Additional Information
 Earth MOID = 1.59007 au 
 Jupiter MOID = 1.6812 au 
 T_jup = 3.187 
[ 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 14.0 mag n/a MPO332961  

15257 (1990 RQ8)          Discovered 1990-Sep-15 by Debehogne, H. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RQ8 = 1994 GE3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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