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3791 Marci (1981 WV1)
Classification: Main-belt Asteroid          SPK-ID: 2003791
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0655219453007823 2.5138e-08  
a 2.882233942631853 1.1283e-08 au
q 2.693384367898671 6.9579e-08 au
i 1.282770614262635 4.5206e-07 deg
node 329.5133707961562 2.9871e-05 deg
peri 353.3900625230166 3.8173e-05 deg
M 70.32640707238886 1.8484e-05 deg
tp 2458851.353093244909
9.1658e-05 TDB
period 1787.278657680519
n .2014235432471387 1.1827e-09 deg/d
Q 3.071083517365035 1.2022e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2933  
   data-arc span      25429 days (69.62 yr)  
   first obs. used      1951-08-06  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43024  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:12:15  

Additional Information
 Earth MOID = 1.67886 au 
 Jupiter MOID = 2.13647 au 
 T_jup = 3.290 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.1   n/a MPO347552  
diameter diameter 11.708 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 10.584 h n/a LCDB (Rev. 2020-October); 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. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.118   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

3791 Marci           Discovered 1981 Nov. 17 by A. Mrkos at Klet.
Named in memory of Jan Marcus Marci of Kronland (1595-1667), Czech physicist, mathematician, astronomer and physician at the Charles University in Prague during the Thirty Years War. Twenty years before Newton, Marci thoroughly described the spectral dispersion and diffraction of light, color effects on thin layers and rainbow colors. He also studied elastic and inelastic collisions of spheres, the motion of a pendulum and tried to solve the problem of squaring the circle. Name suggested by J. Ticha and M. Šolc.
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 WV1 = 1973 AM1 = 1976 UL3 = 1976 WZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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