Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
20120 Ryugatake (1995 WB5)
Classification: Main-belt Asteroid          SPK-ID: 2020120
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1543261887277201 3.7084e-08  
a 2.631485982550999 9.7366e-09 au
q 2.225378780173484 1.0077e-07 au
i 12.79536400686698 2.9925e-06 deg
node 253.6020665407034 1.6788e-05 deg
peri 95.93293136164887 2.0288e-05 deg
M 58.77023160762699 9.6929e-06 deg
tp 2459141.960656440025
(2020-Oct-19.46065644)
4.2184e-05 TDB
period 1559.193509621952
4.27
8.6536e-06
2.369e-08
d
yr
n .2308885957890417 1.2814e-09 deg/d
Q 3.037593184928514 1.1239e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1848  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-11-17  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47911  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:18:55  

Additional Information
 Earth MOID = 1.26302 au 
 Jupiter MOID = 2.48413 au 
 T_jup = 3.348 
[ 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 14.27   n/a E2021B10  
diameter diameter 4.825 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.209   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

Alternate Designations
 1995 WB5 = 1998 KC66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-29 16:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin