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152704 (1998 SD4)
Classification: Mars-crossing Asteroid          SPK-ID: 2152704
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1253906939438943 7.9328e-08  
a 1.514805330923796 3.9058e-09 au
q 1.324862839289351 1.2114e-07 au
i 13.67220284454352 1.0531e-05 deg
node 181.8042306690772 2.0203e-05 deg
peri 144.0925484293149 3.8992e-05 deg
M 131.9604886619615 2.9361e-05 deg
tp 2457150.882471735333
(2015-May-08.38247174)
5.5559e-05 JED
period 680.9789133585057
1.86
2.6338e-06
7.211e-09
d
yr
n .5286507304969599 2.0446e-09 deg/d
Q 1.704747822558242 4.3956e-09 au
  Orbit Determination Parameters
   # obs. used (total)      193  
   data-arc span      5566 days (15.24 yr)  
   first obs. used      1998-09-15  
   last obs. used      2013-12-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62146  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 09:00:06  

Additional Information
 Earth MOID = .333727 au 
 Jupiter MOID = 3.54642 au 
 T_jup = 4.475 
[ 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 18.5 mag n/a MPO280797  

152704 (1998 SD4)          Discovered 1998-Sep-17 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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