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12171 Johannink (2382 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2012171
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .059464216423704 6.0945e-08  
a 2.738412499406902 2.6723e-08 AU
q 2.575574945884794 1.6037e-07 AU
i 2.376167519886299 6.7128e-06 deg
node 310.8813720052856 0.00015728 deg
peri 273.8345329330504 0.00017046 deg
M 224.2568116107185 6.7159e-05 deg
tp 2457624.611628756827
(2016-Aug-24.11162876)
0.00031185 JED
period 1655.185715161814
4.53
2.4228e-05
6.633e-08
d
yr
n .2174982521310642 3.1837e-09 deg/d
Q 2.90125005292901 2.8312e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      707  
   data-arc span      13593 days (37.22 yr)  
   first obs. used      1977-10-11  
   last obs. used      2014-12-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55471  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:15:03  

Additional Information
 Earth MOID = 1.56909 AU 
 T_jup = 3.347 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO279644  

12171 Johannink           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Carl F. Johannink (b. 1959) is a Dutch high-school teacher and amateur astronomer. His main interests lie in meteor astronomy. He is a very prolific meteor observer, active within the Dutch Meteor Society. The name was suggested by K. Miskotte.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

[ show close-approach data ]
Alternate Designations
 2382 T-3 = 1998 HC45 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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