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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2504786306792972 6.545e-08  
a 2.298918476199537 1.7456e-08 AU
q 1.72308852423774 1.5302e-07 AU
i 20.82164964143429 1.2335e-05 deg
node 322.4629894787683 2.1895e-05 deg
peri 279.3475870109546 3.5688e-05 deg
M 234.2183813827298 2.8888e-05 deg
tp 2457445.334498793958
(2016-Feb-26.83449879)
0.00010447 JED
period 1273.162337440592
3.49
1.4501e-05
3.97e-08
d
yr
n .28276048498552 3.2206e-09 deg/d
Q 2.874748428161333 2.1829e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      13769 days (37.70 yr)  
   first obs. used      1977-02-12  
   last obs. used      2014-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53879  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:40:56  

Additional Information
 Earth MOID = .840561 AU 
 T_jup = 3.466 
[ 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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