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20120 Ryugatake (1995 WB5)
Classification: Main-belt Asteroid          SPK-ID: 2020120
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555566066335279 7.7797e-08  
a 2.630696470667418 2.0435e-08 AU
q 2.221474254607597 2.0055e-07 AU
i 12.80167489201409 9.1067e-06 deg
node 253.6312106737925 3.1737e-05 deg
peri 96.5091110371259 4.4249e-05 deg
M 224.9591551390228 3.165e-05 deg
tp 2457585.111273202447
(2016-Jul-15.61127320)
0.00014017 JED
period 1558.491866438977
4.27
1.8159e-05
4.972e-08
d
yr
n .2309925433377908 2.6915e-09 deg/d
Q 3.03991868672724 2.3613e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      552  
   data-arc span      7007 days (19.18 yr)  
   first obs. used      1995-11-17  
   last obs. used      2015-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58944  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:55:59  

Additional Information
 Earth MOID = 1.26032 AU 
 T_jup = 3.348 
[ 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 14.1 mag n/a MPO324494  

20120 Ryugatake           Discovered 1995 Nov. 24 by T. Kobayashi at Oizumi.
Ryugatake is a town in Kumamoto, on the east coast of the beautiful Amakusa-Kamishima Island. It is also the name of the mountain where Myu-i public observatory is located.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1995 WB5 = 1998 KC66 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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