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7984 Marius (1980 SM)
Classification: Main-belt Asteroid          SPK-ID: 2007984
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1990502337028072 5.778e-08  
a 2.634502253645572 1.4415e-08 au
q 2.110103964366848 1.5435e-07 au
i 9.065355977657124 7.3798e-06 deg
node 340.3967799455419 2.586e-05 deg
peri 27.9214955933095 3.0468e-05 deg
M 136.7517731194563 1.4598e-05 deg
tp 2457007.196713799230
(2014-Dec-15.69671380)
6.2391e-05 JED
period 1561.875054049219
4.28
1.2819e-05
3.51e-08
d
yr
n .2304921889024905 1.8917e-09 deg/d
Q 3.158900542924295 1.7284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1305  
   data-arc span      12967 days (35.50 yr)  
   first obs. used      1980-09-08  
   last obs. used      2016-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54096  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 15:58:23  

Additional Information
 Earth MOID = 1.11185 au 
 Jupiter MOID = 2.31599 au 
 T_jup = 3.352 
[ 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 13.6 mag n/a MPO319185  
rotation period rot_per 3.5341 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

7984 Marius           Discovered 1980 Sept. 29 by Z. Vavrova at Klet.
Simon Marius (1573-1625) was court astronomer in Ansbach. He discovered the Jovian satellites, but published his observations after Galileo, who accused him of plagiarism and ruined his reputation. Marius suggested the names for the satellites and also measured the diameter of the Andromeda Galaxy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2014-03-16Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 1980 SM = 1995 DJ12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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