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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1084214082442814 4.6775e-08  
a 3.052555511950454 1.6564e-08 au
q 2.721593144600942 1.4751e-07 au
i 12.41069577049777 4.5044e-06 deg
node 130.5334147051963 1.7115e-05 deg
peri 213.1873906490714 2.5584e-05 deg
M 49.77379211056452 1.6655e-05 deg
tp 2459127.165485029008
(2020-Oct-04.66548503)
9.0885e-05 TDB
period 1948.021665180241
5.33
1.5856e-05
4.341e-08
d
yr
n .1848028727989998 1.5042e-09 deg/d
Q 3.383517879299966 1.836e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1641  
   data-arc span      10067 days (27.56 yr)  
   first obs. used      1993-07-20  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49551  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:11:30  

Additional Information
 Earth MOID = 1.72056 au 
 Jupiter MOID = 1.99655 au 
 T_jup = 3.192 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.70   n/a MPCxxxxx  
diameter diameter 6.157 km 0.815 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.186   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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