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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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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1005977065043736 1.9693e-08  
a 2.997750655090051 1.4529e-08 au
q 2.696183814516008 6.3182e-08 au
i 8.710538864586919 1.1205e-06 deg
node 280.0651361283418 8.6715e-06 deg
peri 103.6867849337388 1.3213e-05 deg
M 229.2710765923916 1.0636e-05 deg
tp 2459888.931716877144
(2022-Nov-05.43171688)
5.7774e-05 TDB
period 1895.796367136211
5.19
1.3782e-05
3.773e-08
d
yr
n .189893812563749 1.3805e-09 deg/d
Q 3.299317495664093 1.5991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2217  
   data-arc span      23673 days (64.81 yr)  
   first obs. used      1955-10-24  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45234  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:31:18  

Additional Information
 Earth MOID = 1.71591 au 
 Jupiter MOID = 2.15955 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 12.38   n/a E2021B10  
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. 2020-October); 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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