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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05877635873532634 5.9009e-08  
a 2.740587684128049 2.6783e-08 au
q 2.579505919260122 1.5645e-07 au
i 2.37337748387565 6.5269e-06 deg
node 310.8690559938892 0.00015201 deg
peri 272.9749295113241 0.00016536 deg
M 312.0062055828913 6.7273e-05 deg
tp 2457621.425865751506
(2016-Aug-20.92586575)
0.00031098 JED
period 1657.158235486176
4.54
2.4293e-05
6.651e-08
d
yr
n .2172393633215016 3.1845e-09 deg/d
Q 2.901669448995977 2.8357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   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      .53022  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:43:20  

Additional Information
 Earth MOID = 1.57095 au 
 Jupiter MOID = 2.08058 au 
 T_jup = 3.346 
[ 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

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