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85585 Mjolnir (1998 FG2)
Classification: Apollo [NEO, PHA]          SPK-ID: 2085585
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3562893362461803 1.3452e-07  
a 1.297494526607819 1.9673e-08 AU
q .8352110629396672 1.8704e-07 AU
i 4.083287382384631 1.2149e-05 deg
node 2.369177304305823 4.557e-05 deg
peri 95.35094902349931 5.3281e-05 deg
M 156.8847653540136 5.9879e-05 deg
tp 2456765.247092105067
8.4483e-05 JED
period 539.8296428022745
n .6668770505658553 1.5167e-08 deg/d
Q 1.75977799027597 2.6682e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      195  
   data-arc span      2039 days (5.58 yr)  
   first obs. used      1998-03-21  
   last obs. used      2003-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58199  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 16:35:59  

Additional Information
 Earth MOID = .0215732 AU 
 T_jup = 4.941 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.6 mag n/a MPO62746  

85585 Mjolnir           Discovered 1998 Mar. 21 by R. Tucker at the Goodricke-Pigott Observatory.
According to Norse mythology, Mjolnir was the hammer of Thor, god of thunder and defender of the world. Forged by the dwarf Eitri, the hammer had the magical power to return when thrown by Thor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050523/MPCPages.arcLast Updated: 2005-07-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2015-Mar-31 02:03 UT
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