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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845457078333695 8.7946e-08  
a 3.117655409136438 2.3322e-08 AU
q 2.542305484876821 2.7921e-07 AU
i .8766883974732987 7.5831e-06 deg
node 299.8781313155243 0.00049739 deg
peri 32.36965349829878 0.00049735 deg
M 278.2389179425776 2.6204e-05 deg
tp 2457257.151326670629
(2015-Aug-22.65132667)
0.00014883 JED
period 2010.669055064229
5.50
2.2562e-05
6.177e-08
d
yr
n .1790448801573167 2.0091e-09 deg/d
Q 3.693005333396055 2.7626e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      19544 days (53.51 yr)  
   first obs. used      1960-09-24  
   last obs. used      2014-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55682  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:02:32  

Additional Information
 Earth MOID = 1.53072 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 ]
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