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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604918336010859 1.2881e-07  
a 3.018525536127082 5.4416e-08 AU
q 2.534076838062346 4.0599e-07 AU
i 15.03816574886622 1.4023e-05 deg
node 191.7060499508353 3.2154e-05 deg
peri 172.8567747978944 4.6682e-05 deg
M 18.9126242410849 2.9537e-05 deg
tp 2456899.867096920156
(2014-Aug-30.36709692)
0.00015782 JED
period 1915.537719511412
5.24
5.1798e-05
1.418e-07
d
yr
n .1879367847122445 5.082e-09 deg/d
Q 3.502974234191818 6.3149e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      7786 days (21.32 yr)  
   first obs. used      1993-09-17  
   last obs. used      2015-01-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .64098  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 20:04:19  

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 (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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