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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2451082638233547 1.3129e-08  
a 3.154861539817198 1.4362e-08 au
q 2.38157890518953 4.1616e-08 au
i 14.82810136083098 1.03e-06 deg
node 22.09295369601615 2.4578e-06 deg
peri 343.2093162102762 5.6636e-06 deg
M 349.4701196678694 4.022e-06 deg
tp 2459260.367320032102
(2021-Feb-14.86732003)
2.3061e-05 TDB
period 2046.769244451224
5.60
1.3976e-05
3.826e-08
d
yr
n .1758869501170967 1.201e-09 deg/d
Q 3.928144174444867 1.7882e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3514  
   data-arc span      26351 days (72.15 yr)  
   first obs. used      1948-11-26  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38176  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:04:26  

Additional Information
 Earth MOID = 1.38337 au 
 Jupiter MOID = 1.54663 au 
 T_jup = 3.109 
[ 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 11.35   n/a E2020-QM5  
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. 2020-October); 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

[ show close-approach data ]
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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