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 ]  
12609 Apollodoros (2155 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012609
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .1845422814192337 7.3757e-08  
a 3.118216157558164 3.5348e-08 AU
q 2.542773433884064 2.4136e-07 AU
i .8766862362150616 6.6085e-06 deg
node 299.8765097017814 0.00046503 deg
peri 32.3139731110553 0.00046501 deg
M 314.0951092941523 2.6687e-05 deg
tp 2457256.956794830848
(2015-Aug-22.45679483)
0.00015146 JED
period 2011.211544554323
5.51
3.4198e-05
9.363e-08
d
yr
n .1789965859010493 3.0436e-09 deg/d
Q 3.693658881232264 4.1871e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      685  
   data-arc span      19627 days (53.74 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-06-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53413  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:28:46  

Additional Information
 Earth MOID = 1.53299 AU 
 T_jup = 3.190 
[ 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 14.0 mag n/a MPO263462  

12609 Apollodoros           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Apollodoros of Athens (c. 180 B.C.-c. 110 B.C.), a universal scholar and stoic, was author of a much used Chronika.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080819/MPCPages.arcLast Updated: 2008-08-25

[ show close-approach data ]
Alternate Designations
 2155 P-L = 1997 GY11 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Aug-23 05:31 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin