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221949 (1993 SJ9)
Classification: Main-belt Asteroid          SPK-ID: 2221949
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .160661398528058 1.377e-07  
a 3.01913962340275 7.4498e-08 AU
q 2.53408042915539 4.3639e-07 AU
i 15.03693055472741 1.6078e-05 deg
node 191.706672738463 5.0464e-05 deg
peri 172.8555108801839 6.9001e-05 deg
M 341.3314303247142 5.4909e-05 deg
tp 2456899.864618160660
(2014-Aug-30.36461816)
0.00029415 JED
period 1916.122293246344
5.25
7.0921e-05
1.942e-07
d
yr
n .1878794486494277 6.9539e-09 deg/d
Q 3.504198817650111 8.6467e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      7214 days (19.75 yr)  
   first obs. used      1993-09-18  
   last obs. used      2013-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .72968  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-08 17:55:26  

Additional Information
 Earth MOID = 1.53201 AU 
 T_jup = 3.176 
[ 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 15.1 mag n/a MPO264560  

221949 (1993 SJ9)          Discovered 1993-Sep-22 by Debehogne, H., Elst, E. W. at La Silla (809)
Reference: 20091102/Numbers.arcLast Updated: 2009-11-04

[ show close-approach data ]
Alternate Designations
 1993 SJ9 = 1998 QV94 = 2004 XD67 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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