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21678 Lindner (1999 RK27)
Classification: Main-belt Asteroid          SPK-ID: 2021678
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1505174388774317 3.3233e-08  
a 2.546861348283898 7.8874e-09 au
q 2.163514300964283 8.5291e-08 au
i 7.602869918277916 4.3494e-06 deg
node 162.1928910725443 2.6411e-05 deg
peri 213.8379145923012 3.0646e-05 deg
M 66.18546190055838 1.6306e-05 deg
tp 2458927.560441963848
(2020-Mar-19.06044196)
6.6855e-05 TDB
period 1484.589486444088
4.06
6.8964e-06
1.888e-08
d
yr
n .2424912767382433 1.1265e-09 deg/d
Q 2.930208395603513 9.0746e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1773  
   data-arc span      10765 days (29.47 yr)  
   first obs. used      1991-09-13  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:51:33  

Additional Information
 Earth MOID = 1.16709 au 
 Jupiter MOID = 2.54102 au 
 T_jup = 3.414 
[ show covariance matrix ]

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 14.4   n/a MPO449112  
diameter diameter 3.651 km 0.863 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.230   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21678 Lindner           Discovered 1999 Sept. 5 by G. Lehmann and J. Kandler at Volkssternwarte Drebach.
Klaus Lindner (b. 1935) worked as a school teacher of astronomy in Germany for many years. He is known to amateur astronomers as the author of five astronomical books. One of them, Astronomie selbst erlebt, helped the first discoverer of this minor planet to make his first observations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1999 RK27 = 1991 RW26 = 1998 KJ59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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