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129558 (1996 XQ8)
Classification: Mars-crossing Asteroid          SPK-ID: 2129558
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3409865442754122 8.4587e-08  
a 2.335859929563207 1.3159e-08 au
q 1.539363124270041 2.0056e-07 au
i 14.18536182586198 1.0181e-05 deg
node 40.08549681814837 3.2126e-05 deg
peri 286.1584614054107 3.4234e-05 deg
M 262.9750896901877 1.7067e-05 deg
tp 2459351.938527834124
(2021-May-17.43852783)
6.3875e-05 TDB
period 1303.97306852743
3.57
1.1019e-05
3.017e-08
d
yr
n .2760793214897806 2.333e-09 deg/d
Q 3.132356734856373 1.7646e-08 au
  Orbit Determination Parameters
   # obs. used (total)      138  
   data-arc span      8538 days (23.38 yr)  
   first obs. used      1996-12-06  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67321  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:45:31  

Additional Information
 Earth MOID = .603013 au 
 Jupiter MOID = 2.41782 au 
 T_jup = 3.449 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO432774  

129558 (1996 XQ8)          Discovered 1996-Dec-06 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1996 XQ8 = 2003 SP235 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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