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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05946421299688823 5.8585e-08  
a 2.738412498192072 2.6088e-08 AU
q 2.575574954126238 1.5516e-07 AU
i 2.376168119594849 6.5297e-06 deg
node 310.8813882270314 0.00015187 deg
peri 273.8345189881085 0.0001651 deg
M 224.256809756826 6.6472e-05 deg
tp 2457624.611636865231
(2016-Aug-24.11163687)
0.000309 JED
period 1655.185714060389
4.53
2.3652e-05
6.476e-08
d
yr
n .2174982522757959 3.108e-09 deg/d
Q 2.901250042257906 2.7639e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      13648 days (37.37 yr)  
   first obs. used      1977-10-11  
   last obs. used      2015-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53216  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:29:58  

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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