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17508 Takumadan (1992 JH)
Classification: Main-belt Asteroid          SPK-ID: 2017508
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2229876175035468 3.2349e-08  
a 2.360898105299766 8.5868e-09 au
q 1.834447061630334 7.5511e-08 au
i 3.299412378388727 4.4627e-06 deg
node 154.8615032606681 6.2965e-05 deg
peri 129.368714076319 6.3729e-05 deg
M 118.298145030673 1.1079e-05 deg
tp 2458165.098695084498
(2018-Feb-15.59869508)
3.9852e-05 TDB
period 1324.995161411359
3.63
7.2287e-06
1.979e-08
d
yr
n .2716991053888341 1.4823e-09 deg/d
Q 2.887349148969199 1.0502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1476  
   data-arc span      24668 days (67.54 yr)  
   first obs. used      1952-05-24  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5284  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 00:20:20  

Additional Information
 Earth MOID = .819622 au 
 Jupiter MOID = 2.2793 au 
 T_jup = 3.515 
[ 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 14.8   n/a MPO358800  
diameter diameter 6.877 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17508 Takumadan           Discovered 1992 May 3 by T. Seki at Geisei.
Educated at the Massachusetts Institute of Technology, Takuma Dan (1858-1932) returned to Japan in 1881 and became a lecturer in astronomy at Tokyo Imperial University. He later directed the Japanese mining industry and became a financier.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1992 JH = 1952 KN1 = 1993 VO8 = 1999 JQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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