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58993 (1998 SF9)
Classification: Main-belt Asteroid          SPK-ID: 2058993
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2148668176742344 4.9158e-08  
a 3.054906760941093 2.6203e-08 au
q 2.398508666926177 1.4986e-07 au
i .6585880620270511 6.1636e-06 deg
node 62.7776305581256 0.00052511 deg
peri 253.5553044079809 0.0005255 deg
M 124.6946015399813 1.675e-05 deg
tp 2456724.976413579919
(2014-Mar-08.47641358)
8.8562e-05 JED
period 1950.272811395565
5.34
2.5092e-05
6.87e-08
d
yr
n .1845895599305377 2.3749e-09 deg/d
Q 3.711304854956009 3.1833e-08 au
  Orbit Determination Parameters
   # obs. used (total)      727  
   data-arc span      7652 days (20.95 yr)  
   first obs. used      1995-01-07  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57045  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 15:24:31  

Additional Information
 Earth MOID = 1.38313 au 
 Jupiter MOID = 1.587 au 
 T_jup = 3.200 
[ 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 14.5 mag n/a MPO266216  

58993 (1998 SF9)          Discovered 1998-Sep-17 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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