+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01226432518048711 4.0658e-08   a 2.947563551155673 1.2526e-08 au q 2.911413673274148 1.2282e-07 au i 3.021790653746278 3.4963e-06 deg node 75.35871108661468 8.1454e-05 deg peri 147.3432019013154 0.0001714 deg M 339.2199234717686 0.00015008 deg tp 2459107.193468781397 (2020-Sep-14.69346878) 0.00077051 TDB period 1848.388224611217 5.06 1.1782e-05 3.226e-08 d yr n .1947642790657363 1.2415e-09 deg/d Q 2.983713429037198 1.2679e-08 au   Orbit Determination Parameters    # obs. used (total)      2472      data-arc span      14683 days (40.20 yr)      first obs. used      1980-05-22      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45508      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 23:03:00   Additional Information  Earth MOID = 1.90091 au   Jupiter MOID = 1.9771 au   T_jup = 3.268  [ show covariance matrix ] [ 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.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1980 KO = 1982 VV2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-21 06:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin