Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3099580037977292 3.6906e-08  
a 2.687119389130432 1.0608e-08 au
q 1.85422522730939 9.9744e-08 au
i 7.704868146358463 3.7667e-06 deg
node 93.61444144676894 3.1357e-05 deg
peri 269.84606338 3.1799e-05 deg
M 25.33113579961137 6.431e-06 deg
tp 2458487.290979401879
(2019-Jan-03.79097940)
2.8479e-05 TDB
period 1608.899329968016
4.40
9.5272e-06
2.608e-08
d
yr
n .2237554539892541 1.325e-09 deg/d
Q 3.520013550951474 1.3896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2365  
   data-arc span      30653 days (83.92 yr)  
   first obs. used      1935-12-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47159  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:13:29  

Additional Information
 Earth MOID = .87063 au 
 Jupiter MOID = 1.99593 au 
 T_jup = 3.291 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456431.5 (2013-May-19.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3107179714237915 3.7101e-08  
q 1.851860350243924 1.0039e-07 au
tp 2456871.595783950430
(2014-Aug-02.09578395)
2.5641e-05 TDB
node 94.15301230637452 3.137e-05 deg
peri 268.40370026671 3.1803e-05 deg
i 7.704708070934766 3.766e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2365  
   data-arc span      30653 days (83.92 yr)  
   first obs. used      1935-12-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47159  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 21:13:29  

Additional Information
 Jupiter MOID = 1.99593 au 
 T_jup = 3.291 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.376453016752326E-15 -3.715025208951427E-15 1.201798915156467E-13 -8.530127447246065E-15 1.690862672913292E-15 4.710499618053796E-16
q -3.715025208951427E-15 1.007877811982297E-14 -2.9729228999085E-13 2.187167592510022E-14 -2.221042249952568E-15 -9.94482227089739E-16
tp 1.201798915156467E-13 -2.9729228999085E-13 6.574558047713016E-10 -7.853783094308009E-12 1.559156611113779E-10 2.823995892807441E-13
node -8.530127447246065E-15 2.187167592510022E-14 -7.853783094308009E-12 9.840755286975658E-10 -9.761615156887646E-10 -9.925491606726619E-13
peri 1.690862672913292E-15 -2.221042249952568E-15 1.559156611113779E-10 -9.761615156887646E-10 1.01141347884734E-9 9.427437582613452E-13
i 4.710499618053796E-16 -9.94482227089739E-16 2.823995892807441E-13 -9.925491606726619E-13 9.427437582613452E-13 1.418279215752362E-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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-05 20:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin