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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1710236295725598 7.1977e-08  
a 3.144206047989251 3.2972e-08 au
q 2.606472517538136 2.2213e-07 au
i 1.28278709257903 6.8716e-06 deg
node 7.954067018098368 0.00028695 deg
peri 325.0507432523098 0.00028723 deg
M 213.3165608821176 2.0011e-05 deg
tp 2458230.242829568647
(2018-Apr-21.74282957)
0.00011853 JED
period 2036.408611913279
5.58
3.2032e-05
8.77e-08
d
yr
n .176781809845995 2.7807e-09 deg/d
Q 3.681939578440367 3.8611e-08 au
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      9223 days (25.25 yr)  
   first obs. used      1990-09-15  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53547  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:30:11  

Additional Information
 Earth MOID = 1.59435 au 
 Jupiter MOID = 1.67615 au 
 T_jup = 3.186 
[ 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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