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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4855760494201974 3.4736e-08  
a 1.580376285984731 2.483e-09 au
q .8129834124389014 5.4142e-08 au
i 4.516012993213755 6.9279e-06 deg
node 299.606132014062 7.8546e-05 deg
peri 117.2579907446749 7.8907e-05 deg
M 301.4915190551581 7.1449e-06 deg
tp 2459118.438474305084
(2020-Sep-25.93847430)
1.4646e-05 TDB
period 725.6700236305386
1.99
1.7102e-06
4.682e-09
d
yr
n .4960932493792624 1.1691e-09 deg/d
Q 2.347769159530561 3.6886e-09 au
  Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      7584 days (20.76 yr)  
   first obs. used      1998-07-26  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56915  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-29 06:09:12  

Additional Information
 Earth MOID = .000940885 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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