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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 ]

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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3101950998658082 3.4203e-08  
a 2.687125482801385 9.842e-09 au
q 1.853592325311851 9.135e-08 au
i 7.704835335920174 3.605e-06 deg
node 93.61386788002828 2.7243e-05 deg
peri 269.8318111100618 2.7726e-05 deg
M 114.8202019370887 6.6569e-06 deg
tp 2458487.347849012561
(2019-Jan-03.84784901)
2.842e-05 TDB
period 1608.904802803747
4.40
8.8393e-06
2.42e-08
d
yr
n .2237546928647664 1.2293e-09 deg/d
Q 3.520658640290919 1.2895e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2808  
   data-arc span      30851 days (84.47 yr)  
   first obs. used      1935-12-26  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4486  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:17:16  

Additional Information
 Earth MOID = .870824 au 
 Jupiter MOID = 1.99875 au 
 T_jup = 3.290 
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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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2016-Nov-04 13:33 < 00:01 Jupiter 1.99335320145974 1.99335286937329 1.9933535335462 0.749302771570196 n/a 2457697.064865016 0.157915065823367 62.7020970272866 16.4687416553492 88.3573414907129 18095833.4334115 F 36 CATAB v2.0f-lin.ifort 2020-Jun-23 16:17:28 2020-Jun-23 16:17
2170-Dec-18 01:53 00:02 Jupiter 1.9827316947685 1.9827313593676 1.98273203016944 0.726772292659238 n/a 2513987.578240946 2.44753542919125 226.998062238182 16.6981729647985 -89.7599512615943 17758718.3456095 F 36 CATAB v2.0f-lin.ifort 2020-Jun-23 16:17:28 2020-Jun-23 16:17

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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