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22522 (1998 EF6)
Classification: Main-belt Asteroid          SPK-ID: 2022522
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2507878260655467 6.7856e-08  
a 2.298254334152106 1.7488e-08 AU
q 1.721880125944379 1.5811e-07 AU
i 20.82087036707636 1.4093e-05 deg
node 322.4674319443326 2.2839e-05 deg
peri 279.3837574604819 3.8599e-05 deg
M 177.6057326431712 3.0664e-05 deg
tp 2456172.658473405131
(2012-Sep-02.15847341)
0.00010618 JED
period 1272.610665266402
3.48
1.4525e-05
3.977e-08
d
yr
n .2828830606449768 3.2288e-09 deg/d
Q 2.874628542359834 2.1874e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      13470 days (36.88 yr)  
   first obs. used      1977-02-12  
   last obs. used      2013-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54901  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jan-22 07:05:31  

Additional Information
 Earth MOID = .837958 AU 
 T_jup = 3.467 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5 mag n/a MPO270287  

22522 (1998 EF6)          Discovered 1998-Mar-02 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905)
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 EF6 = 1977 CT = 1991 CP4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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