+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5313 Nunes (1982 SC2) Classification: Main-belt Asteroid          SPK-ID: 2005313 [ 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 .1215788814799994 3.2464e-08   a 2.216010578761243 6.48e-09 au q 1.946590491247605 7.1548e-08 au i 4.526179847263776 3.5786e-06 deg node 111.9620451987086 4.5931e-05 deg peri 138.1944734556266 4.8759e-05 deg M 286.0103646874818 1.8706e-05 deg tp 2459448.142144822740 (2021-Aug-21.64214482) 6.3138e-05 TDB period 1204.91433373916 3.30 5.2851e-06 1.447e-08 d yr n .298776427435158 1.3105e-09 deg/d Q 2.485430666274881 7.2678e-09 au   Orbit Determination Parameters    # obs. used (total)      2373      data-arc span      22979 days (62.91 yr)      first obs. used      1958-02-18      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47151      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:23:52   Additional Information  Earth MOID = .933401 au   Jupiter MOID = 2.54084 au   T_jup = 3.640  [ 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 13.57   n/a E2021B10   diameter diameter 5.457 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 2.798 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Oey, J. (2009) Minor Planet Bull. 36, 4-6.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.284   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   5313 Nunes (1982 SC2)          Discovered 1982-Sep-18 by Debehogne, H. at La Silla Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1982 SC2 = 1958 DL = 1988 GJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin