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17855 Geffert (1998 KK)
Classification: Main-belt Asteroid          SPK-ID: 2017855
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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1430758322978538 3.4395e-08  
a 3.098953015959933 1.6879e-08 au
q 2.655567733949521 1.0611e-07 au
i 5.19385698077463 4.197e-06 deg
node 245.1066246117222 5.0675e-05 deg
peri 225.4906091757291 5.3815e-05 deg
M 44.85517916910043 1.7062e-05 deg
tp 2458352.226132454708
(2018-Aug-21.72613245)
9.4497e-05 TDB
period 1992.603618399447
5.46
1.628e-05
4.457e-08
d
yr
n .1806681452727507 1.4761e-09 deg/d
Q 3.542338297970344 1.9294e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1657  
   data-arc span      24635 days (67.45 yr)  
   first obs. used      1951-11-29  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45964  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:33:20  

Additional Information
 Earth MOID = 1.6757 au 
 Jupiter MOID = 1.62131 au 
 T_jup = 3.200 
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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 12.9   n/a MPO384907  
diameter diameter 14.754 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17855 Geffert           Discovered 1998 May 19 at the Starkenburg Observatory, Heppenheim.
The German amateur astronomer Martin Geffert (b. 1922) has been very dedicated to the Starkenburg Observatory, being one of the founders and treasurer of the observatory since its beginnings in 1970. He is also an excellent performer on the mandolin.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11

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Alternate Designations
 1998 KK = 1990 WO15 
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