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5891 Gehrig (1981 SM)
Classification: Main-belt Asteroid          SPK-ID: 2005891
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2454800.5 (2008-Nov-30.0) TDB
Reference: MPO47609 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1313478 n/a  
a 2.4346294 n/a AU
q 2.1148462 n/a AU
i 3.34295 n/a deg
node 300.60676 n/a deg
peri 110.81144 n/a deg
M 21.37234 n/a deg
tp 2454718.1246459
(2008-Sep-08.62464590)
n/a JED
period 1387.5470581
3.80
n/a
n/a
d
yr
n 0.25945066 n/a deg/d
Q 2.7544126 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      287  
   first obs. used      1951-??-??  
   last obs. used      2002-05-23  
   # oppositions      11  
   planetary ephem.      DE403  
   quality code      1  
   fit RMS      0.70  
   data source      MPC:mpn  
   producer      MPC  

Additional Information
 T_jup = 3.491 

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a PDS3 (MPC 23328)  

5891 Gehrig           Discovered 1981 Sept. 22 by A. Mrkos at Klet.
Named in memory of Henry Louis (Lou) Gehrig (1903-1941), professional U.S. baseball player. From 1925 to 1939 Gehrig appeared in 2130 consecutive games for the New York Yankees, a reliability record that remained unbroken until 1995. Gehrig was a consistent left-handed batsman, with a career average of 0.340, but his career was ended prematurely as a result of amyothrophic lateral sclerosis ("Lou Gehrig's Disease"). Name suggested by G. V. Williams, who made the identifications involving this object, and T. B. Spahr.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19960828/MPCPages.arcLast Updated: 2003-09-26

Alternate Designations
 1981 SM = 1976 JT4 = 1990 BH3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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