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JPL Small-Body Database Browser
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20193 Yakushima (1997 BH8)
Classification: Main-belt Asteroid          SPK-ID: 2020193
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2019987210763731 5.0005e-08  
a 2.651994900962917 1.4543e-08 au
q 2.116295322667345 1.3124e-07 au
i 10.56113935644741 5.1693e-06 deg
node 316.9106504452925 2.4405e-05 deg
peri 31.20221439818231 2.7104e-05 deg
M 260.0361714371845 1.4035e-05 deg
tp 2459438.523926757299
(2021-Aug-12.02392676)
6.3114e-05 TDB
period 1577.456725094705
4.32
1.2976e-05
3.553e-08
d
yr
n .2282154522992615 1.8772e-09 deg/d
Q 3.187694479258489 1.748e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1350  
   data-arc span      19528 days (53.46 yr)  
   first obs. used      1965-10-23  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50035  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 23:37:44  

Additional Information
 Earth MOID = 1.11619 au 
 Jupiter MOID = 2.2505 au 
 T_jup = 3.337 
[ 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 13.6   n/a MPO435887  
diameter diameter 11.554 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20193 Yakushima           Discovered 1997 Jan. 18 by N. Sato at Chichibu.
Yakushima is a small island located to the south of Kagoshima prefecture, Japan. This island was listed as a UNESCO World Natural Heritage site in 1993. The first total solar eclipse visible in Japan in 46 years occurred on the island on July 22, 2009, and attracted many space enthusiasts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111012/MPCPages.arcLast Updated: 2011-10-13

[ show close-approach data ]
Alternate Designations
 1997 BH8 = 1965 UH2 = 1998 FB108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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