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48495 Ryugado (1993 BB)
Classification: Main-belt Asteroid          SPK-ID: 2048495
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1395555714521855 4.6461e-08  
a 2.297479817648993 5.4822e-09 au
q 1.976853708797125 1.0635e-07 au
i 5.802150138843944 4.2464e-06 deg
node 144.5784850223959 3.0822e-05 deg
peri 24.41023750037798 3.2553e-05 deg
M 34.91979335005279 9.3989e-06 deg
tp 2459273.119891297167
(2021-Feb-27.61989130)
3.3187e-05 TDB
period 1271.967410796621
3.48
4.5527e-06
1.246e-08
d
yr
n .2830261191790562 1.013e-09 deg/d
Q 2.618105926500861 6.2473e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1466  
   data-arc span      24148 days (66.11 yr)  
   first obs. used      1955-05-17  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49502  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 07:54:36  

Additional Information
 Earth MOID = .986069 au 
 Jupiter MOID = 2.35029 au 
 T_jup = 3.574 
[ 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 15.41   n/a MPCxxxxx  
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

Alternate Designations
 1993 BB = 1999 YH16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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