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2675 Tolkien (1982 GB)
Classification: Main-belt Asteroid          SPK-ID: 2002675
[ 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: MPO47591 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1020689 n/a  
a 2.2123414 n/a AU
q 1.9865301 n/a AU
i 2.75346 n/a deg
node 5.97932 n/a deg
peri 1.92491 n/a deg
M 218.46242 n/a deg
tp 2455273.0479628
(2010-Mar-17.54796281)		 n/a JED
period 1201.9229565
3.29		 n/a
n/a		 d
yr
n 0.29952003 n/a deg/d
Q 2.4381527 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      304  
   first obs. used      1937-??-??  
   last obs. used      2002-06-09  
   # oppositions      22  
   planetary ephem.      DE403  
   quality code      1  
   fit RMS      0.72  
   data source      MPC:mpn  
   producer      MPC  

Additional Information
 T_jup = 3.648 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a PDS3 (MPC 17266)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2675 Tolkien (1982 GB)           Discovered 1982-Apr-14 by Watt, M. at Flagstaff (AM) (688)
Reference: DISCOVERY.DBLast Updated: 2003--0-8-

Alternate Designations
 1982 GB = 1934 VO = 1937 RH = 1939 FR = 1949 FO = 1950 QA1 = 1952 DX = 1969 JE = 1969 KB = 1970 RB = 1973 QX = 1975 BV 
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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