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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2150489572070853 5.0387e-08  
a 3.055548657765811 2.6878e-08 AU
q 2.398456105217764 1.5471e-07 AU
i .6586290423955691 6.2786e-06 deg
node 62.77918061304895 0.00054803 deg
peri 253.6108656354608 0.00054843 deg
M 50.78602958913572 1.6806e-05 deg
tp 2456725.283800420363
(2014-Mar-08.78380042)
9.0343e-05 JED
period 1950.887530492523
5.34
2.5741e-05
7.048e-08
d
yr
n .1845313962866501 2.4348e-09 deg/d
Q 3.712641210313858 3.2658e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      7287 days (19.95 yr)  
   first obs. used      1995-01-07  
   last obs. used      2014-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57363  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 04:47:29  

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 (327)
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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