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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 61 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4857607614345807 1.3447e-07  
a 1.58028013204408 5.4378e-09 au
q .8126420518224081 2.1289e-07 au
i 4.513480696836766 1.353e-05 deg
node 299.708144957764 0.00010757 deg
peri 117.1090596829238 0.00010597 deg
M 227.7755537429747 1.3147e-05 deg
tp 2457667.007111959686
(2016-Oct-05.50711196)
2.7762e-05 JED
period 725.6037973415943
1.99
3.7452e-06
1.025e-08
d
yr
n .4961385281043698 2.5608e-09 deg/d
Q 2.347918212265752 8.0793e-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 = .00103632 au 
 Jupiter MOID = 3.03959 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
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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