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JPL Small-Body Database Browser
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11239 Marcgraf (4141 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2011239
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788927412437163 5.3075e-08  
a 2.53561072661872 1.0757e-08 au
q 2.082008373006926 1.3444e-07 au
i 4.37283570114572 5.141e-06 deg
node 215.9163667993643 6.0077e-05 deg
peri 232.5880553879256 6.1035e-05 deg
M 113.4489538055495 1.0839e-05 deg
tp 2458135.749043880115
(2018-Jan-17.24904388)
4.4003e-05 TDB
period 1474.763218089493
4.04
9.3851e-06
2.57e-08
d
yr
n .2441069831307347 1.5535e-09 deg/d
Q 2.989213080230514 1.2682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1535  
   data-arc span      23780 days (65.11 yr)  
   first obs. used      1954-04-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46151  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:54:18  

Additional Information
 Earth MOID = 1.10174 au 
 Jupiter MOID = 2.23741 au 
 T_jup = 3.422 
[ show covariance matrix ]

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 13.8   n/a MPO384856  
diameter diameter 5.349 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.225   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11239 Marcgraf           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Georg Marcgraf (1610-1643), astronomer, mathematician and naturalist, made the first serious study of the southern sky during his stay in Dutch Brazil. He is also known for his zoological and cartographic work during the reign of Johan Maurits in Dutch Brazil. Marcgraf died in 1643 in Luanda (then Dutch Angola).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

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Alternate Designations
 4141 P-L = 1954 GQ = 1999 JR79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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