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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1699858952567857 7.2168e-08  
a 3.1464408797897 3.142e-08 AU
q 2.6115903099661 2.2313e-07 AU
i 1.284366826575688 7.657e-06 deg
node 7.945267599418408 0.00029978 deg
peri 323.9035768579043 0.0003001 deg
M 144.2482831618616 2.1226e-05 deg
tp 2456183.661981854108
(2012-Sep-13.16198185)
0.00011771 JED
period 2038.580148663214
5.58
3.0536e-05
8.36e-08
d
yr
n .1765934982914789 2.6452e-09 deg/d
Q 3.6812914496133 3.6761e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      700  
   data-arc span      8868 days (24.28 yr)  
   first obs. used      1990-09-15  
   last obs. used      2014-12-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5408  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:26:44  

Additional Information
 Earth MOID = 1.60183 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 13.9 mag n/a MPO247498  

15257 (1990 RQ8)          Discovered 1990-Sep-15 by Debehogne, H. at La Silla (809)
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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