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5176 Yoichi (1989 AU)
Classification: Main-belt Asteroid          SPK-ID: 2005176
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3101950997478595 3.424e-08  
a 2.687125482822476 9.8594e-09 au
q 1.853592325643343 9.1469e-08 au
i 7.704835325821825 3.6175e-06 deg
node 93.61386792132805 2.7307e-05 deg
peri 269.8318110321234 2.7791e-05 deg
M 114.820201946739 6.6578e-06 deg
tp 2458487.347848963390
(2019-Jan-03.84784896)
2.8427e-05 TDB
period 1608.904802822689
4.40
8.8549e-06
2.424e-08
d
yr
n .2237546928621321 1.2315e-09 deg/d
Q 3.520658640001609 1.2918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2747  
   data-arc span      30805 days (84.34 yr)  
   first obs. used      1935-12-26  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44934  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:17:48  

Additional Information
 Earth MOID = .870824 au 
 Jupiter MOID = 1.99875 au 
 T_jup = 3.290 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456845.5 (2014-Jul-07.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3105061357235961 3.4634e-08  
q 1.852267099638891 9.2734e-08 au
tp 2456871.632119310135
(2014-Aug-02.13211931)
2.5246e-05 TDB
node 94.15153094008055 2.7317e-05 deg
peri 268.3956591129535 2.7784e-05 deg
i 7.704615575581955 3.6211e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2747  
   data-arc span      30805 days (84.34 yr)  
   first obs. used      1935-12-26  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44934  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:17:48  

Additional Information
 Jupiter MOID = 1.99875 au 
 T_jup = 3.290 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.199483190754192E-15 -3.2032339979268E-15 6.10237605628787E-14 -6.297180457900789E-15 -2.744606772668101E-14 3.027684283872236E-16
q -3.2032339979268E-15 8.599642077005814E-15 -1.264312137753625E-13 1.656229216916103E-14 8.050866856932609E-14 -5.846745396925765E-16
tp 6.10237605628787E-14 -1.264312137753625E-13 6.37335785559812E-10 -3.153110058059528E-12 1.420066123601494E-10 -5.707469141765048E-14
node -6.297180457900789E-15 1.656229216916103E-14 -3.153110058059528E-12 7.462047465517789E-10 -7.396132030518907E-10 1.413801433610441E-11
peri -2.744606772668101E-14 8.050866856932609E-14 1.420066123601494E-10 -7.396132030518907E-10 7.719760988943197E-10 -1.411637017883225E-11
i 3.027684283872236E-16 -5.846745396925765E-16 -5.707469141765048E-14 1.413801433610441E-11 -1.411637017883225E-11 1.311237091277123E-11

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 MPO337296  
diameter diameter 16.56 km 0.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9
geometric albedo albedo 0.0849   0.007 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 9

5176 Yoichi           Discovered 1989 Jan. 4 by S. Ueda and H. Kaneda at Kushiro.
Yoichi is a city of population of 24 000 located in southwestern Hokkaido and noted for its fruit and marine products.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1989 AU = 1935 YH = 1948 VS = 1948 WS = 1952 OH1 = 1961 TK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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