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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 62 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4855759692344272 1.2011e-07  
a 1.580376288125954 5.9234e-09 au
q .8129835402640875 1.9011e-07 au
i 4.516024515733712 1.6497e-05 deg
node 299.606270277002 0.00013556 deg
peri 117.2578346115637 0.00013424 deg
M 301.491515295653 1.988e-05 deg
tp 2459118.438482122996
(2020-Sep-25.93848212)
4.0706e-05 TDB
period 725.6700251053343
1.99
4.0798e-06
1.117e-08
d
yr
n .4960932483710408 2.7891e-09 deg/d
Q 2.347769035987821 8.7997e-09 au
  Orbit Determination Parameters
   # obs. used (total)      244  
   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-N16  
   condition code      0  
   norm. resid. RMS      .47749  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:28:39  

Additional Information
 Earth MOID = .000941123 au 
 Jupiter MOID = 3.03592 au 
 T_jup = 4.253 
[ 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 21.1   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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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