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4574 Yoshinaka (1986 YB)
Classification: Main-belt Asteroid          SPK-ID: 2004574
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1005671465529106 4.0947e-08  
a 2.997603865270342 1.6676e-08 au
q 2.696143398044129 1.2085e-07 au
i 8.710579928702579 4.0696e-06 deg
node 280.0652430252192 2.9281e-05 deg
peri 103.7770066544844 3.5557e-05 deg
M 191.1819295604429 2.0657e-05 deg
tp 2459889.447715716458
(2022-Nov-05.94771572)
0.00011086 TDB
period 1895.657122633113
5.19
1.5819e-05
4.331e-08
d
yr
n .1899077611144949 1.5848e-09 deg/d
Q 3.299064332496556 1.8353e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1898  
   data-arc span      23475 days (64.27 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:16:24  

Additional Information
 Earth MOID = 1.71712 au 
 Jupiter MOID = 2.15877 au 
 T_jup = 3.229 
[ 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 12.3   n/a MPO384794  
diameter diameter 12.071 km 0.327 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.02736 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.143   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4574 Yoshinaka (1986 YB)          Discovered 1986-Dec-20 by Niijima and Urata at Ojima
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1986 YB = 1977 BR = 1981 YT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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