Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

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.

Note: If the applet is not working, here are some notes that might help.
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2295039313818454 4.1016e-08  
a 2.741300907482065 2.0137e-08 au
q 2.112161572114311 1.148e-07 au
i 7.498316477935398 5.155e-06 deg
node 283.7083899059138 4.1998e-05 deg
peri 321.4335090298219 4.4523e-05 deg
M 277.1944888261477 1.7769e-05 deg
tp 2458981.820569856315
(2020-May-12.32056986)
8.3778e-05 TDB
period 1657.805177484627
4.54
1.8267e-05
5.001e-08
d
yr
n .2171545878184701 2.3928e-09 deg/d
Q 3.370440242849819 2.4759e-08 au
  Orbit Determination Parameters
   # obs. used (total)      752  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1993-07-12  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56616  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:26:14  

Additional Information
 Earth MOID = 1.1044 au 
 Jupiter MOID = 1.71723 au 
 T_jup = 3.299 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456897.5 (2014-Aug-28.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229447981871559 4.112e-08  
q 2.114388356581519 1.1525e-07 au
tp 2457321.828807627853
(2015-Oct-26.32880763)
7.6505e-05 TDB
node 283.7670867486397 4.1963e-05 deg
peri 321.0113489484206 4.4473e-05 deg
i 7.49958134747984 5.1556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      752  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1993-07-12  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56616  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:26:14  

Additional Information
 Jupiter MOID = 1.71723 au 
 T_jup = 3.299 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.690851082356742E-15 -4.695724599456063E-15 -7.925906387260839E-13 7.380691897191716E-15 -1.271799015479487E-13 -6.728629381491099E-17
q -4.695724599456063E-15 1.328333359222027E-14 2.554031271828135E-12 -2.370461061723354E-14 4.095099806381876E-13 2.360042021602382E-16
tp -7.925906387260839E-13 2.554031271828135E-12 5.853010273894021E-9 -1.874224179873953E-11 1.163513230159238E-9 4.197964285516593E-12
node 7.380691897191716E-15 -2.370461061723354E-14 -1.874224179873953E-11 1.76088697383809E-9 -1.749527432379329E-9 5.325934361640542E-11
peri -1.271799015479487E-13 4.095099806381876E-13 1.163513230159238E-9 -1.749527432379329E-9 1.977804987551186E-9 -5.199671033915768E-11
i -6.728629381491099E-17 2.360042021602382E-16 4.197964285516593E-12 5.325934361640542E-11 -5.199671033915768E-11 2.657997003189245E-11

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 14.6   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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Sep-04 23:40 00:03 Jupiter 1.90234672933894 1.9023443976692 1.90234906101008 2.52621584086563 2.34334455529461 2421841.485815982 3.1496821492865 192.180710431998 62.2843880972916 75.1571321764936 1194445.43512434 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
1940-May-25 02:37 00:03 Jupiter 1.87115773858825 1.87115607532525 1.87115940184348 1.30489862448117 0.892980680790847 2429774.608726235 2.69738685925476 613.672513854118 189.62004930479 -9.53434777767013 659922.548270505 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
1977-May-09 08:36 00:01 Jupiter 1.72677418125995 1.72677360630161 1.72677475621986 1.99273556696625 1.72914688954284 2443272.858320383 1.21173206151365 236.704180649229 39.6887362360395 -81.1774538449202 2101719.85234796 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
2036-Jan-11 04:56 < 00:01 Jupiter 1.72289617193775 1.72289561576984 1.72289672810566 1.52681543619318 1.16099573564748 2464703.705507589 0.759211907996742 264.449429238296 97.0720017748102 -47.0848172162116 1944005.52419766 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
2072-Dec-03 07:08 00:02 Jupiter 1.88950774993075 1.88950645033388 1.88950904952773 2.53823588486394 2.35501332851285 2478179.796876460 1.92032209420278 158.540666761354 47.1834730875985 87.3274399214995 1544116.79132637 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
2094-Aug-28 19:00 00:03 Jupiter 1.88482798358287 1.88482624000563 1.88482972715648 1.42433151776405 1.0629866530205 2486118.291365562 2.91847373565104 267.232592337903 133.760334476555 -22.7506335024813 939530.149288042 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
2131-Aug-11 03:07 00:04 Jupiter 1.71771838525743 1.71771737191824 1.71771939864027 2.07908698319897 1.82657727548542 2499613.630049258 3.7429678647622 554.530171168148 38.5153934363853 -86.6187589832654 2039796.15053809 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26
2190-Apr-19 18:11 00:06 Jupiter 1.71858956006419 1.71858795371785 1.71859116646474 1.67259325349751 1.34604976792073 2521050.257965144 5.85219219272807 666.584772133254 71.1689369351234 -58.2689661427285 1922087.47237629 T 20 CATAB v2.0e-lin.ifort 2019-Jul-13 02:26:18 2019-Jul-13 02:26

Alternate Designations
 1993 NC2 = 1998 SE69 = 2001 BU70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-22 02:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin