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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1556012227920772 5.7708e-08  
a 2.631298070813056 1.8401e-08 au
q 2.221864873464111 1.5296e-07 au
i 12.80039661173099 9.0886e-06 deg
node 253.6303304261344 2.7156e-05 deg
peri 96.41981717739951 4.098e-05 deg
M 317.4406954917648 3.1898e-05 deg
tp 2457584.808565649203
(2016-Jul-15.30856565)
0.00013906 JED
period 1559.026501969136
4.27
1.6354e-05
4.477e-08
d
yr
n .2309133292765071 2.4222e-09 deg/d
Q 3.040731268162002 2.1264e-08 au
  Orbit Determination Parameters
   # obs. used (total)      671  
   data-arc span      7210 days (19.74 yr)  
   first obs. used      1995-11-17  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55237  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:54:16  

Additional Information
 Earth MOID = 1.25864 au 
 Jupiter MOID = 2.47785 au 
 T_jup = 3.347 
[ 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 14.2 mag n/a MPO344461  

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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