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JPL Small-Body Database Browser
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12157 Konnen (1070 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2012157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09621328578901914 3.2092e-08  
a 2.412520010265345 9.1202e-09 au
q 2.180403533045958 7.82e-08 au
i 5.821112072662945 5.0263e-06 deg
node 187.4660978043936 3.5412e-05 deg
peri 82.68679517136934 4.4725e-05 deg
M 244.6190586560699 2.8231e-05 deg
tp 2459439.168440076694
(2021-Aug-12.66844008)
0.00010824 TDB
period 1368.689114408214
3.75
7.7612e-06
2.125e-08
d
yr
n .2630253986900851 1.4915e-09 deg/d
Q 2.644636487484732 9.9977e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      16937 days (46.37 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:15:50  

Additional Information
 Earth MOID = 1.17387 au 
 Jupiter MOID = 2.42662 au 
 T_jup = 3.505 
[ 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 14.8   n/a MPO267755  
diameter diameter 2.568 km 0.682 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.353   0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12157 Können           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Günther Peter Können (b. 1944), a researcher at the Koninklijk Nederlands Meteorologisch Instituut, specialized in atmospheric optics. He is famous for his book Polarized light in Nature, which describes phenomena such as halos and rainbows. The name was suggested by M. Drummen.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20091202/MPCPages.arcLast Updated: 2010-04-12

[ show close-approach data ]
Alternate Designations
 1070 T-2 = 1991 JJ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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