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4714 Toyohiro (1989 SH)
Classification: Main-belt Asteroid          SPK-ID: 2004714
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1215575245094527 4.6365e-08  
a 3.024374092878221 1.6268e-08 au
q 2.656738664957423 1.456e-07 au
i 9.842641378972635 4.9345e-06 deg
node 336.2226263350078 1.9892e-05 deg
peri 36.51462656212779 2.5495e-05 deg
M 308.22532942577 1.5754e-05 deg
tp 2459276.790870155417
(2021-Mar-03.29087016)
8.4544e-05 TDB
period 1921.10760247806
5.26
1.5501e-05
4.244e-08
d
yr
n .1873918980569499 1.512e-09 deg/d
Q 3.39200952079902 1.8246e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2230  
   data-arc span      30641 days (83.89 yr)  
   first obs. used      1936-09-11  
   last obs. used      2020-08-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42763  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:19:05  

Additional Information
 Earth MOID = 1.66322 au 
 Jupiter MOID = 2.09997 au 
 T_jup = 3.212 
[ 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 11.5   n/a MPO347561  
diameter diameter 19.180 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 14.706 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.081   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4714 Toyohiro (1989 SH)          Discovered 1989-Sep-29 by Fujii and Watanabe at Kitami
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1989 SH = 1936 RQ = 1968 UE = 1978 QO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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