+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01223677021488966 4.0596e-08   a 2.947472187158087 1.2418e-08 au q 2.911404647289055 1.2255e-07 au i 3.021812268020536 3.4956e-06 deg node 75.35817702958192 8.1435e-05 deg peri 147.9639882827517 0.00017212 deg M 17.56797054426687 0.0001509 deg tp 2459110.302999719144 (2020-Sep-17.80299972) 0.00077481 TDB period 1848.302285075539 5.06 1.168e-05 3.198e-08 d yr n .194773334917609 1.2309e-09 deg/d Q 2.983539727027118 1.257e-08 au   Orbit Determination Parameters    # obs. used (total)      2480      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      .45614      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:06:00   Additional Information  Earth MOID = 1.89933 au   Jupiter MOID = 1.97633 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 12.76   n/a E2021B10   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. 2020-October); 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 ] 2021-Feb-25 07:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin