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20314 Johnharrison (1998 FN126)
Classification: Main-belt Asteroid          SPK-ID: 2020314
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1601896899243719 1.9827e-08  
a 2.156280061535309 5.673e-09 au
q 1.810866227087862 4.4149e-08 au
i 2.727957971195679 1.0953e-06 deg
node 292.4581835465406 1.7111e-05 deg
peri 1.375885558137723 1.887e-05 deg
M 341.4669293398103 8.8373e-06 deg
tp 2459260.038934505652
(2021-Feb-14.53893451)
2.8535e-05 TDB
period 1156.528068933371
3.17
4.5641e-06
1.25e-08
d
yr
n .311276491829564 1.2284e-09 deg/d
Q 2.501693895982755 6.5818e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1962  
   data-arc span      16139 days (44.19 yr)  
   first obs. used      1976-05-03  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47736  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:34:58  

Additional Information
 Earth MOID = .792802 au 
 Jupiter MOID = 2.67173 au 
 T_jup = 3.683 
[ 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 14.49   n/a E2021B10  
diameter diameter 3.750 km 0.110 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.239   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20314 Johnharrison           Discovered 1998 Mar. 28 by J. Broughton at Reedy Creek Observatory.
John Harrison (1693-1776) was an English clockmaker who worked for decades on the problem of finding longitude at sea, developing a portable timepiece of unprecedented accuracy. This was a great step forward in improving maritime safety and enabled the charting of the world's oceans.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011230/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1998 FN126 = 1976 JR5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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