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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2146951955133688 4.8701e-08  
a 3.055158985729426 2.5942e-08 au
q 2.399231029963822 1.4812e-07 au
i .6586269318513663 6.0846e-06 deg
node 62.78160632597251 0.00051528 deg
peri 253.5324903651351 0.00051565 deg
M 161.6483385903234 1.6768e-05 deg
tp 2456724.673877860841
(2014-Mar-08.17387786)
8.7621e-05 JED
period 1950.514349356705
5.34
2.4843e-05
6.802e-08
d
yr
n .1845667016593499 2.3508e-09 deg/d
Q 3.711086941495031 3.1512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      731  
   data-arc span      7670 days (21.00 yr)  
   first obs. used      1995-01-07  
   last obs. used      2016-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56909  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 23:48:39  

Additional Information
 Earth MOID = 1.38528 au 
 Jupiter MOID = 1.58818 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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