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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604918252275186 1.303e-07  
a 3.018525541603793 5.6177e-08 AU
q 2.534076867935916 4.1197e-07 AU
i 15.03816631919067 1.4112e-05 deg
node 191.7060455510146 3.4017e-05 deg
peri 172.8567803649231 4.8388e-05 deg
M 18.91262157065589 3.0613e-05 deg
tp 2456899.867110855466
(2014-Aug-30.36711086)
0.00016335 JED
period 1915.537724724643
5.24
5.3474e-05
1.464e-07
d
yr
n .1879367842007652 5.2464e-09 deg/d
Q 3.50297421527167 6.5192e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      207  
   data-arc span      7688 days (21.05 yr)  
   first obs. used      1993-09-17  
   last obs. used      2014-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67947  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 19:29:52  

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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