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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1005671428364662 4.0246e-08  
a 2.997603862167293 1.5809e-08 au
q 2.696143406393572 1.1953e-07 au
i 8.710577310602492 3.5345e-06 deg
node 280.0652362918814 2.881e-05 deg
peri 103.7770192675631 3.3764e-05 deg
M 191.181925072675 1.9286e-05 deg
tp 2459889.447737967434
(2022-Nov-05.94773797)
0.00010463 TDB
period 1895.657119689603
5.19
1.4997e-05
4.106e-08
d
yr
n .189907761409377 1.5024e-09 deg/d
Q 3.299064317941014 1.7399e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2130  
   data-arc span      23612 days (64.65 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45041  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:11:00  

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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