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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604918359933372 1.2875e-07  
a 3.018525531905505 5.4286e-08 AU
q 2.534076827297226 4.0576e-07 AU
i 15.03816640529746 1.3998e-05 deg
node 191.7060529035814 3.1755e-05 deg
peri 172.8567698576567 4.6383e-05 deg
M 18.91262739001317 2.9406e-05 deg
tp 2456899.867080376014
(2014-Aug-30.36708038)
0.00015714 JED
period 1915.537715492933
5.24
5.1675e-05
1.415e-07
d
yr
n .1879367851065046 5.0699e-09 deg/d
Q 3.502974236513785 6.2999e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      7794 days (21.34 yr)  
   first obs. used      1993-09-17  
   last obs. used      2015-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .63295  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 22:10:06  

Additional Information
 Earth MOID = 1.53344 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
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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