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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604918407659774 1.347e-07  
a 3.018525501263664 8.0528e-08 AU
q 2.534076787166814 4.3885e-07 AU
i 15.03815855079295 1.4861e-05 deg
node 191.7060018209585 4.5646e-05 deg
peri 172.8568002553384 6.2705e-05 deg
M 18.9126540742335 5.2555e-05 deg
tp 2456899.866939923258
(2014-Aug-30.36693992)
0.00027758 JED
period 1915.537686325247
5.24
7.6654e-05
2.099e-07
d
yr
n .1879367879681977 7.5206e-09 deg/d
Q 3.502974215360514 9.3452e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      159  
   data-arc span      7215 days (19.75 yr)  
   first obs. used      1993-09-17  
   last obs. used      2013-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .71644  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 22:29:26  

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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