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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150489648167667 4.998e-08  
a 3.055548653691072 2.666e-08 AU
q 2.398456078767542 1.5311e-07 AU
i .6586288676961681 6.2755e-06 deg
node 62.77908713783499 0.00054187 deg
peri 253.610958933798 0.00054228 deg
M 50.7860309411744 1.6763e-05 deg
tp 2456725.283793644011
(2014-Mar-08.78379364)
9.014e-05 JED
period 1950.887526590102
5.34
2.5533e-05
6.991e-08
d
yr
n .184531396655774 2.4151e-09 deg/d
Q 3.712641228614602 3.2393e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      715  
   data-arc span      7343 days (20.10 yr)  
   first obs. used      1995-01-07  
   last obs. used      2015-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56648  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 18:35:36  

Additional Information
 Earth MOID = 1.38593 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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