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85640 (1998 OX4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2085640
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 60 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4857567378096233 1.458e-07  
a 1.580626589341698 6.2544e-09 AU
q .812826573607924 2.3103e-07 AU
i 4.513636115924784 1.4176e-05 deg
node 299.7155447925194 0.00011462 deg
peri 117.1128760155431 0.00011297 deg
M 290.1015776409804 1.2585e-05 deg
tp 2456941.431224311504
(2014-Oct-10.93122431)
2.6114e-05 JED
period 725.8424301989223
1.99
4.3081e-06
1.179e-08
d
yr
n .4959754142525664 2.9438e-09 deg/d
Q 2.348426605075473 9.2925e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      3656 days (10.01 yr)  
   first obs. used      1998-07-26  
   last obs. used      2008-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63923  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-27 05:50:11  

Additional Information
 Earth MOID = .00107567 AU 
 T_jup = 4.252 
[ 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 21.1 mag n/a MPO267962  

85640 (1998 OX4)          Discovered 1998-Jul-26 by Spacewatch at Kitt Peak (691)
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 OX4 = 2002 PJ34 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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