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3374 Namur (1980 KO)
Classification: Main-belt Asteroid          SPK-ID: 2003374
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01226432501612198 4.0657e-08  
a 2.947563551313085 1.2523e-08 au
q 2.911413673914107 1.2281e-07 au
i 3.02179062725108 3.4962e-06 deg
node 75.35870941138707 8.1435e-05 deg
peri 147.3432050654904 0.00017137 deg
M 339.2199219204297 0.00015006 deg
tp 2459107.193476755156
(2020-Sep-14.69347676)
0.00077037 TDB
period 1848.388224759285
5.06
1.178e-05
3.225e-08
d
yr
n .1947642790501345 1.2412e-09 deg/d
Q 2.983713428712064 1.2677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      14698 days (40.24 yr)  
   first obs. used      1980-05-22  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:50  

Additional Information
 Earth MOID = 1.90091 au 
 Jupiter MOID = 1.9771 au 
 T_jup = 3.268 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456745.5 (2014-Mar-29.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01342806037246013 4.1963e-08  
q 2.912147214349727 1.2651e-07 au
tp 2457201.450539570341
(2015-Jun-27.95053957)
0.00066608 TDB
node 75.41994825269448 8.1312e-05 deg
peri 136.2327072539292 0.00015352 deg
i 3.022916265782416 3.4969e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2479  
   data-arc span      14698 days (40.24 yr)  
   first obs. used      1980-05-22  
   last obs. used      2020-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:00:50  

Additional Information
 Jupiter MOID = 1.9771 au 
 T_jup = 3.268 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.760898649879549E-15 -5.284346260772924E-15 -4.419117487148383E-12 -9.127704563626308E-15 -8.159552848139984E-13 -7.597132685101414E-16
q -5.284346260772924E-15 1.600595096907423E-14 1.17585285139188E-11 2.971226500321994E-14 2.144372117936998E-12 2.229384620460148E-15
tp -4.419117487148383E-12 1.17585285139188E-11 4.43667635566067E-7 8.718821332962978E-11 8.676284175017413E-8 3.736262268258099E-12
node -9.127704563626308E-15 2.971226500321994E-14 8.718821332962978E-11 6.611705576540083E-9 -6.585693336504965E-9 -9.720696001136934E-11
peri -8.159552848139984E-13 2.144372117936998E-12 8.676284175017413E-8 -6.585693336504965E-9 2.356896719088108E-8 9.779179428022225E-11
i -7.597132685101414E-16 2.229384620460148E-15 3.736262268258099E-12 -9.720696001136934E-11 9.779179428022225E-11 1.222859470454244E-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 12.7   n/a MPO337278  
diameter diameter 7.774 km 0.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 13.8542 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.181   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3374 Namur (1980 KO)          Discovered 1980-May-22 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1980 KO = 1982 VV2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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