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

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05741658598523759 3.1608e-08  
a 2.738577851866643 1.2527e-08 au
q 2.581338061157675 8.8426e-08 au
i 2.372503344220558 3.9167e-06 deg
node 310.7923607354137 8.6557e-05 deg
peri 273.991745145192 9.368e-05 deg
M 342.3361068137408 3.6266e-05 deg
tp 2459281.721310631011
(2021-Mar-08.22131063)
0.00016684 TDB
period 1655.33563404412
4.53
1.1358e-05
3.11e-08
d
yr
n .2174785539537324 1.4922e-09 deg/d
Q 2.895817642575611 1.3246e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1335  
   data-arc span      15585 days (42.67 yr)  
   first obs. used      1977-10-07  
   last obs. used      2020-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:10:46  

Additional Information
 Earth MOID = 1.572 au 
 Jupiter MOID = 2.08623 au 
 T_jup = 3.347 
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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 15.02   n/a E2021B10  
diameter diameter 5.640 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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