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4212 Sansyu-Asuke (1987 SB2)
Classification: Main-belt Asteroid          SPK-ID: 2004212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2456765539075597 4.2665e-08  
a 3.157260387315451 1.6254e-08 au
q 2.381595535570944 1.3811e-07 au
i 14.82443981630153 4.6549e-06 deg
node 22.12875235634613 1.398e-05 deg
peri 343.1219823720248 1.5611e-05 deg
M 314.3839172487287 7.3508e-06 deg
tp 2459260.144731714351
(2021-Feb-14.64473171)
4.2604e-05 TDB
period 2049.104126867651
5.61
1.5823e-05
4.332e-08
d
yr
n .1756865330949831 1.3567e-09 deg/d
Q 3.932925239059959 2.0247e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3187  
   data-arc span      26186 days (71.69 yr)  
   first obs. used      1948-11-26  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39014  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:13:07  

Additional Information
 Earth MOID = 1.38491 au 
 Jupiter MOID = 1.54096 au 
 T_jup = 3.108 
[ 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 11.2   n/a MPO435738  
diameter diameter 16.895 km 0.629 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.94 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
geometric albedo albedo 0.225   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4212 Sansyu-Asuke           Discovered 1987 Sept. 28 by K. Suzuki and T. Urata at Toyota.
Sansyu-Asuke, in the middle of Aichi prefecture, has a national park where colors are beautiful in the autumn season.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

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Alternate Designations
 1987 SB2 = 1948 WJ = 1978 EB4 = 1982 YD1 = 2019 FT5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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