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20613 Chibaken (1999 RE240)
Classification: Main-belt Asteroid          SPK-ID: 2020613
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119017008388177 7.388e-08  
a 3.0532617343521 4.3198e-08 AU
q 2.711596553172022 2.2788e-07 AU
i 12.39474070761627 8.4201e-06 deg
node 130.6720113257797 2.9389e-05 deg
peri 214.2229568074887 4.3837e-05 deg
M 289.1549291298973 3.5879e-05 deg
tp 2457183.987857660164
(2015-Jun-10.48785766)
0.00019701 JED
period 1948.697729596314
5.34
4.1355e-05
1.132e-07
d
yr
n .1847387588810792 3.9205e-09 deg/d
Q 3.394926915532178 4.8031e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      7644 days (20.93 yr)  
   first obs. used      1993-07-20  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56915  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:45:05  

Additional Information
 Earth MOID = 1.71096 AU 
 T_jup = 3.191 
[ 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 13.5 mag n/a MPO263531  

20613 Chibaken           Discovered 1999 Sept. 11 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Chiba prefecture is located east of Tokyo. In 2011, some areas were damaged during the Tohoku earthquake.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120506/MPCPages.arcLast Updated: 2012-05-09

Alternate Designations
 1999 RE240 = 1993 OF2 = 1996 AK9 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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