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118273 (1998 OX9)
Classification: Mars-crossing Asteroid          SPK-ID: 2118273
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2633173274872106 3.4447e-08  
a 2.248582314672142 7.9195e-09 au
q 1.656491628937667 7.8506e-08 au
i 2.002631855531587 4.2969e-06 deg
node 175.8710275391694 9.5148e-05 deg
peri 155.886293702619 9.5501e-05 deg
M 162.3233179309357 8.1021e-06 deg
tp 2458445.184209139918
(2018-Nov-22.68420914)
2.6934e-05 TDB
period 1231.577121869131
3.37
6.5064e-06
1.781e-08
d
yr
n .2923081255793692 1.5443e-09 deg/d
Q 2.840673000406616 1.0005e-08 au
  Orbit Determination Parameters
   # obs. used (total)      584  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1998-07-26  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56487  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 05:56:17  

Additional Information
 Earth MOID = .646251 au 
 Jupiter MOID = 2.53441 au 
 T_jup = 3.582 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO449690  

118273 (1998 OX9)          Discovered 1998-Jul-26 by Elst, E. W. at La Silla
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 OX9 = 2001 JB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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