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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
48495 Ryugado (1993 BB)
Classification: Main-belt Asteroid          SPK-ID: 2048495
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .139950274784922 4.8797e-08  
a 2.297159905950926 8.6227e-09 au
q 1.975671745888188 1.1256e-07 au
i 5.802059430985437 4.922e-06 deg
node 144.5868270369276 3.6432e-05 deg
peri 24.54852597964523 3.8386e-05 deg
M 169.5090057113257 1.2954e-05 deg
tp 2458001.708614206858
(2017-Sep-05.20861421)
4.4312e-05 TDB
period 1271.701748122094
3.48
7.1602e-06
1.96e-08
d
yr
n .2830852442654949 1.5939e-09 deg/d
Q 2.618648066013664 9.8294e-09 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      23544 days (64.46 yr)  
   first obs. used      1955-05-17  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54957  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:37:19  

Additional Information
 Earth MOID = .984546 au 
 Jupiter MOID = 2.35279 au 
 T_jup = 3.574 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO449310  
diameter diameter 1.917 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.400   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48495 Ryugado           Discovered 1993 Jan. 16 by T. Seki at Geisei.
Ryugado, in Kochi prefecture, is one of the Three Greatest Limestone Caves of Japan and has been designated a National Historic Site, as well as a National Natural Treasure. Earthenware from the Yayoi Period (300 B.C.-A.D. 300), evidence of cave dwelling, was uncovered in this 4-km-long cave.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

[ show close-approach data ]
Alternate Designations
 1993 BB = 1999 YH16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin