+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2403 Sumava (1979 SQ) Classification: Main-belt Asteroid          SPK-ID: 2002403 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1299401487428154 3.2306e-08   a 2.545936188849356 8.6363e-09 au q 2.215116861780555 8.1805e-08 au i 3.308631181269931 3.4449e-06 deg node 290.3647099240131 7.1731e-05 deg peri 39.02114438627984 7.4153e-05 deg M 23.94592914219713 1.9065e-05 deg tp 2458901.804150231632 (2020-Feb-22.30415023) 7.8619e-05 TDB period 1483.780633677787 4.06 7.5499e-06 2.067e-08 d yr n .2426234659146902 1.2345e-09 deg/d Q 2.876755515918158 9.7585e-09 au   Orbit Determination Parameters    # obs. used (total)      2487      data-arc span      37330 days (102.20 yr)      first obs. used      1918-09-03      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40867      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:06:08   Additional Information  Earth MOID = 1.20503 au   Jupiter MOID = 2.44065 au   T_jup = 3.429  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.3   n/a MPO452195   diameter diameter 9.682 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.188   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2403 Sumava (1979 SQ)          Discovered 1979-Sep-25 by Mrkos, A. at Klet Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1979 SQ = 1934 PZ = 1951 WD1 = 1963 TK1 = A918 RC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 13:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin