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8432 Tamakasuga (1997 YD18)
Classification: Main-belt Asteroid          SPK-ID: 2008432
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1635745074476849 3.8877e-08  
a 3.173335134391605 1.7705e-08 au
q 2.654258402817065 1.2728e-07 au
i 2.348798044086498 4.2681e-06 deg
node 86.29600363975669 0.00010022 deg
peri 78.78154274909808 0.0001011 deg
M 313.8078799046737 1.4252e-05 deg
tp 2459265.434021619724
(2021-Feb-19.93402162)
8.2674e-05 TDB
period 2064.77311684922
5.65
1.728e-05
4.731e-08
d
yr
n .1743532967677092 1.4592e-09 deg/d
Q 3.692411865966144 2.0601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1864  
   data-arc span      16282 days (44.58 yr)  
   first obs. used      1976-04-02  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:20:52  

Additional Information
 Earth MOID = 1.66303 au 
 Jupiter MOID = 1.28503 au 
 T_jup = 3.179 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456787.5 (2014-May-10.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654210048321697 3.875e-08  
q 2.645976840280497 1.2706e-07 au
tp 2457204.834434715325
(2015-Jul-01.33443472)
7.6216e-05 TDB
node 86.34288659312557 0.0001001 deg
peri 79.38659927630486 0.00010096 deg
i 2.350532216688028 4.273e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1864  
   data-arc span      16282 days (44.58 yr)  
   first obs. used      1976-04-02  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48723  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:20:52  

Additional Information
 Jupiter MOID = 1.28503 au 
 T_jup = 3.179 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.501571330350268E-15 -4.89236253534591E-15 -2.004649241700187E-13 3.219690685454982E-15 2.150721207965167E-14 -7.6943726759044E-17
q -4.89236253534591E-15 1.614496763542391E-14 8.878009242634467E-13 -1.058737212370843E-14 -3.753180922593935E-14 3.54608492409852E-16
tp -2.004649241700187E-13 8.878009242634467E-13 5.808814926172677E-9 -5.81087781048549E-12 1.019754818025188E-9 5.696824261853629E-13
node 3.219690685454982E-15 -1.058737212370843E-14 -5.81087781048549E-12 1.00209557273295E-8 -1.001295353873268E-8 -4.109881615462335E-11
peri 2.150721207965167E-14 -3.753180922593935E-14 1.019754818025188E-9 -1.001295353873268E-8 1.019383351618794E-8 4.115500283872365E-11
i -7.6943726759044E-17 3.54608492409852E-16 5.696824261853629E-13 -4.109881615462335E-11 4.115500283872365E-11 1.825829700054671E-11

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 13.5   n/a MPO416805  
diameter diameter 11.156 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12.08 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 [Result based on fragmentary lightcurve(s), may be completely wrong.]
geometric albedo albedo 0.071   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8432 Tamakasuga           Discovered 1997 Dec. 27 by A. Nakamura at Kuma Kogen.
Named in honor of Ryoji Matsumoto (b. 1972), Japanese sumo wrestler whose professional name is Tamakasuga. Born in Ehime prefecture, where this minor planet was discovered, he became a professional wrestler in 1994. In 1996 he was promoted to "Makunouchi", the top division in the official listing of rank. Famous for his powerful "tsuki-oshi", or pushing-thrusting style, Tamakasuga has won the Outstanding Performance Award, the Technique Prize and the Fighting Spirit Prize (twice) in his 26 tournaments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980610/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1997 YD18 = 1976 GV5 = 1981 AQ1 = 1987 CD = 1993 FL36 = 1994 NX9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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