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17851 Kaler (1998 JK)
Classification: Main-belt Asteroid          SPK-ID: 2017851
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1436023754884805 4.0011e-08  
a 2.399142255332226 9.3255e-09 au
q 2.054619728331728 9.7589e-08 au
i 3.232874432194788 3.8168e-06 deg
node 68.25171603231902 6.7732e-05 deg
peri 133.8999529693438 6.8626e-05 deg
M 230.3018994014973 1.3147e-05 deg
tp 2459089.505272694328
(2020-Aug-28.00527269)
5.0871e-05 TDB
period 1357.320557183167
3.72
7.9139e-06
2.167e-08
d
yr
n .2652284297138358 1.5464e-09 deg/d
Q 2.743664782332725 1.0665e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      15887 days (43.50 yr)  
   first obs. used      1976-05-30  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48231  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 23:45:45  

Additional Information
 Earth MOID = 1.05308 au 
 Jupiter MOID = 2.21537 au 
 T_jup = 3.511 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO502305  
diameter diameter 4.911 km 0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17851 Kaler           Discovered 1998 May 1 by NEAT at Haleakala.
James B. Kaler (b. 1938), a professor at the University of Illinois from 1976 to 2003 known for his spectroscopic research on planetary nebulae, has with books and an outstanding website also worked tirelessly to educate planetarians, teachers, students and amateur astronomers, always being available to answer their questions.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

Alternate Designations
 1998 JK = 1976 KZ1 = 1979 BE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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