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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1116961799294396 7.2513e-08  
a 3.052873502666989 3.3933e-08 au
q 2.711879194611278 2.1889e-07 au
i 12.39470922942177 7.2211e-06 deg
node 130.6686072893233 2.8951e-05 deg
peri 214.0564630734712 4.0774e-05 deg
M 40.13670989799731 2.7972e-05 deg
tp 2457183.279449618697
(2015-Jun-09.77944962)
0.00015155 JED
period 1948.326066984649
5.33
3.2484e-05
8.894e-08
d
yr
n .1847739996401929 3.0807e-09 deg/d
Q 3.393867810722699 3.7724e-08 au
  Orbit Determination Parameters
   # obs. used (total)      815  
   data-arc span      8172 days (22.37 yr)  
   first obs. used      1993-07-20  
   last obs. used      2015-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55694  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:45:45  

Additional Information
 Earth MOID = 1.71036 au 
 Jupiter MOID = 1.98081 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 13.6 mag n/a MPO350965  

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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