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JPL Small-Body Database Browser
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136909 (1998 HJ93)
Classification: Main-belt Asteroid          SPK-ID: 2136909
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1002714083034708 3.6922e-08  
a 2.348524684039686 1.2716e-08 au
q 2.113034806535563 8.9354e-08 au
i 5.803461324109572 4.948e-06 deg
node 239.0214344001232 5.3287e-05 deg
peri 34.46494438073985 6.1559e-05 deg
M 252.663001241271 3.1654e-05 deg
tp 2458992.456677572953
(2020-May-22.95667757)
0.00011646 TDB
period 1314.592410427237
3.60
1.0677e-05
2.923e-08
d
yr
n .2738491392042963 2.2242e-09 deg/d
Q 2.584014561543809 1.3992e-08 au
  Orbit Determination Parameters
   # obs. used (total)      541  
   data-arc span      9649 days (26.42 yr)  
   first obs. used      1992-11-27  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5739  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 14:22:52  

Additional Information
 Earth MOID = 1.09935 au 
 Jupiter MOID = 2.49 au 
 T_jup = 3.546 
[ 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 16.1   n/a MPO351820  

136909 (1998 HJ93)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 HJ93 = 2005 EP258 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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