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30812 (1990 OZ4)
Classification: Main-belt Asteroid          SPK-ID: 2030812
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1989480535522611 6.738e-08  
a 2.271330818055105 2.0796e-08 AU
q 1.819453972829777 1.5341e-07 AU
i 4.947071632586725 7.9958e-06 deg
node 228.7056938631883 9.3656e-05 deg
peri 57.1557444038413 9.861e-05 deg
M 358.5585243204674 4.1566e-05 deg
tp 2456805.506380288469
(2014-May-28.00638029)
0.00014441 JED
period 1250.313778747399
3.42
1.7172e-05
4.701e-08
d
yr
n .2879277235196581 3.9544e-09 deg/d
Q 2.723207663280433 2.4934e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      13542 days (37.08 yr)  
   first obs. used      1976-05-03  
   last obs. used      2013-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62008  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 22:47:06  

Additional Information
 Earth MOID = .808362 AU 
 T_jup = 3.581 
[ 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 15.3 mag n/a MPO263605  

30812 (1990 OZ4)          Discovered 1990-Jul-25 by Holt, H. E. at Palomar (675)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 OZ4 = 1976 JX4 = 2000 HC14 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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