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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4857245860080922 1.3475e-07  
a 1.580440544356093 5.4897e-09 AU
q .812781715238326 2.1343e-07 AU
i 4.51360687860809 1.353e-05 deg
node 299.7139707845058 0.00010755 deg
peri 117.1234211938657 0.00010595 deg
M 29.29900250700595 1.2215e-05 deg
tp 2456941.436931684622
(2014-Oct-10.93693168)
2.435e-05 JED
period 725.7142828822197
1.99
3.7812e-06
1.035e-08
d
yr
n .4960629940618469 2.5846e-09 deg/d
Q 2.348099373473861 8.1562e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      241  
   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      .62618  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 16:36:47  

Additional Information
 Earth MOID = .00107332 AU 
 T_jup = 4.253 
[ 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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