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85585 Mjolnir (1998 FG2)
Classification: Apollo [NEO, PHA]          SPK-ID: 2085585
[ 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3563702164068558 1.4318e-07  
a 1.297618545870533 1.8491e-08 au
q .8351859438651016 1.9751e-07 au
i 4.082502885097603 1.5171e-05 deg
node 2.322832619994108 5.5012e-05 deg
peri 95.41018139054613 6.224e-05 deg
M 183.9970312195639 9.8183e-05 deg
tp 2459464.459006751420
(2021-Sep-06.95900675)		 0.00015287 TDB
period 539.9070429832083
1.48		 1.1541e-05
3.16e-08		 d
yr
n .6667814481745822 1.4253e-08 deg/d
Q 1.760051147875964 2.5081e-08 au
   Orbit Determination Parameters
   # obs. used (total)      196  
   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-N16  
   condition code      0  
   norm. resid. RMS      .56558  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:28:39  

Additional Information
 Earth MOID = .0212412 au 
 Jupiter MOID = 3.4187 au 
 T_jup = 4.941 
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Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 21.6   n/a MPO62746  
rotation period rot_per 11.6 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Hasegawa, S.; Kuroda, D.; Kitazato, K.; Kasuga, T.; et al. (2018) Pub. Astron. Soc. Japan 70, A114.]

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

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