Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]

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.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09619105222480408 3.259e-08  
a 2.412672209641845 9.3564e-09 au
q 2.180594731122853 7.9071e-08 au
i 5.821045450623071 5.8858e-06 deg
node 187.4803452749983 3.5607e-05 deg
peri 82.5282355545756 4.7292e-05 deg
M 139.587021830916 3.0844e-05 deg
tp 2458069.751897393887
(2017-Nov-12.25189739)
0.0001167 TDB
period 1368.818636804546
3.75
7.9625e-06
2.18e-08
d
yr
n .2630005103089522 1.5299e-09 deg/d
Q 2.644749688160837 1.0256e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      16871 days (46.19 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56617  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 22:43:11  

Additional Information
 Earth MOID = 1.17361 au 
 Jupiter MOID = 2.42619 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-27 00:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin