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43843 Cleynaerts (1993 NC2)
Classification: Main-belt Asteroid          SPK-ID: 2043843
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2297231799412148 4.0232e-08  
a 2.741567391139986 1.7547e-08 au
q 2.111765812024168 1.1118e-07 au
i 7.498372234018337 4.9794e-06 deg
node 283.7095170230301 4.0573e-05 deg
peri 321.4804958398387 4.2443e-05 deg
M 4.030480833970786 1.3993e-05 deg
tp 2458981.936871321602
(2020-May-12.43687132)		 6.4402e-05 TDB
period 1658.046917851119
4.54		 1.5918e-05
4.358e-08		 d
yr
n .2171229270559915 2.0845e-09 deg/d
Q 3.371368970255804 2.1578e-08 au
   Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      9837 days (26.93 yr)  
   first obs. used      1993-07-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:28:21  

Additional Information
 Earth MOID = 1.10417 au 
 Jupiter MOID = 1.7167 au 
 T_jup = 3.299 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457012.5 (2014-Dec-21.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2292006126074022 4.0294e-08  
q 2.114219227351327 1.1131e-07 au
tp 2457322.166695509011
(2015-Oct-26.66669551)		 6.2033e-05 TDB
node 283.7537483912091 4.057e-05 deg
peri 321.1120723623834 4.2439e-05 deg
i 7.497052011867808 4.9788e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      9837 days (26.93 yr)  
   first obs. used      1993-07-12  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55238  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 21:28:21  

Additional Information
 Jupiter MOID = 1.7167 au 
 T_jup = 3.299 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.623573420439744E-15 -4.451079666095657E-15 -4.595725789500828E-13 1.518594938009939E-15 -6.373173641979008E-14 -2.02994474297431E-16
q -4.451079666095657E-15 1.239035884447766E-14 1.295515116081113E-12 -7.544994279294421E-15 1.747151606828989E-13 3.630970246204555E-16
tp -4.595725789500828E-13 1.295515116081113E-12 3.848073649822178E-9 -8.678151122460984E-12 8.055037165329835E-10 2.570019314355866E-12
node 1.518594938009939E-15 -7.544994279294421E-15 -8.678151122460984E-12 1.645950559762063E-9 -1.633824241327645E-9 4.07255488972552E-11
peri -6.373173641979008E-14 1.747151606828989E-13 8.055037165329835E-10 -1.633824241327645E-9 1.801073989145413E-9 -3.98546146435162E-11
i -2.02994474297431E-16 3.630970246204555E-16 2.570019314355866E-12 4.07255488972552E-11 -3.98546146435162E-11 2.478819534547823E-11

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Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO431994  
diameter diameter 5.466 km 0.248 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.094   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

43843 Cleynaerts           Discovered 1993 July 12 by E. W. Elst at the European Southern Observatory.
Nicolas Cleynaerts (Clenardus, 1495-1542) was a Flemish humanist who promoted tolerance between the nations and a grammarian who wrote manuals to study Greek and Hebrew. Desiring to bring Islam and Christianity closer together, he got into conflict with the Spanish and Portuguese authorities.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20101128/MPCPages.arcLast Updated: 2010-12-06

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Alternate Designations
 1993 NC2 = 1998 SE69 = 2001 BU70 
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