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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 ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2230915870550558 3.0621e-08  
a 2.360441477680362 7.7491e-09 au
q 1.833846842274069 7.2198e-08 au
i 3.300226714316646 4.0989e-06 deg
node 154.8488492282984 5.8352e-05 deg
peri 129.4823498455466 5.901e-05 deg
M 281.189020977163 1.0416e-05 deg
tp 2459490.482977500829
(2021-Oct-02.98297750)
3.9013e-05 TDB
period 1324.610773710198
3.63
6.5229e-06
1.786e-08
d
yr
n .2717779495267503 1.3383e-09 deg/d
Q 2.887036113086655 9.4779e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1652  
   data-arc span      25140 days (68.83 yr)  
   first obs. used      1952-05-24  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52225  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:33:44  

Additional Information
 Earth MOID = .81772 au 
 Jupiter MOID = 2.28063 au 
 T_jup = 3.515 
[ 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 14.83   n/a MPCxxxxx  
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

Alternate Designations
 1992 JH = 1952 KN1 = 1993 VO8 = 1999 JQ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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