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JPL Small-Body Database Browser
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6385 Martindavid (1989 EC2)
Classification: Main-belt Asteroid          SPK-ID: 2006385
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189388330738789 4.6682e-08  
a 3.148173795145001 1.9069e-08 au
q 2.77373367763669 1.4668e-07 au
i 5.667557532487686 5.9644e-06 deg
node 22.92768442456224 4.1467e-05 deg
peri 200.6474802302121 4.6349e-05 deg
M 167.0156297069029 2.1442e-05 deg
tp 2458053.955381168670
0.00011937 TDB
period 2040.264515226955
n .1764477092618328 1.6032e-09 deg/d
Q 3.522613912653312 2.1337e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1914  
   data-arc span      23683 days (64.84 yr)  
   first obs. used      1955-03-23  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48903  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:01:51  

Additional Information
 Earth MOID = 1.76606 au 
 Jupiter MOID = 1.46216 au 
 T_jup = 3.190 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO416782  
diameter diameter 13.471 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.476 h n/a LCDB (Rev. 2019-August); 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.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.089   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

6385 Martindavid           Discovered 1989 Mar. 5 by A. Mrkos at Klet.
Martin Alois David (1757-1836), the fourth director of the Klementinum observatory in Prague, organized extensive longitude and latitude measurements in Bohemia. The name was 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: 20010309/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1989 EC2 = 1987 WS2 = 1991 RV12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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