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18458 Caesar (1995 EY8)
Classification: Main-belt Asteroid          SPK-ID: 2018458
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1385941603035887 7.2674e-08  
a 2.298938383634307 1.8189e-08 AU
q 1.980318948764821 1.675e-07 AU
i 5.872936109042872 8.2598e-06 deg
node 353.7587643589057 5.8647e-05 deg
peri 220.5619015368639 6.365e-05 deg
M 206.4027590612047 2.7984e-05 deg
tp 2457543.713228888590
(2016-Jun-04.21322889)
0.00010188 JED
period 1273.178874858937
3.49
1.511e-05
4.137e-08
d
yr
n .2827568121878292 3.3557e-09 deg/d
Q 2.617557818503793 2.071e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      9660 days (26.45 yr)  
   first obs. used      1988-03-22  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51096  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 14:10:04  

Additional Information
 Earth MOID = .980211 AU 
 T_jup = 3.573 
[ 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 14.8 mag n/a MPO266053  

18458 Caesar           Discovered 1995 Mar. 5 by F. Börngen at Tautenburg.
Emperor Gaius Julius Caesar (100-44 B.C.) promulgated in 46 B.C. on the advice of the Alexandrine astronomer Sosigenes what is now called the Julian calendar. In 44 B.C., after the assassination of Julius, the fifth month "Quintilis" was renamed Julius (July).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020526/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1995 EY8 = 1993 TF7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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