Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2504786472511272 6.2983e-08  
a 2.298918478112806 1.7319e-08 AU
q 1.723088487574491 1.4789e-07 AU
i 20.82164539670453 8.9927e-06 deg
node 322.4629844103561 1.8018e-05 deg
peri 279.3475756135333 2.7963e-05 deg
M 234.218394269493 2.4854e-05 deg
tp 2457445.334453774439
(2016-Feb-26.83445377)
9.0931e-05 JED
period 1273.162339029971
3.49
1.4387e-05
3.939e-08
d
yr
n .2827604846325298 3.1953e-09 deg/d
Q 2.874748468651122 2.1657e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      510  
   data-arc span      13835 days (37.88 yr)  
   first obs. used      1977-02-12  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53065  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:54:03  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Jan-25 12:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin