+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1339 Desagneauxa (1934 XB) Classification: Main-belt Asteroid          SPK-ID: 2001339 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05700689558868582 3.1854e-08   a 3.019088470780144 1.3095e-08 au q 2.846979609553375 9.5088e-08 au i 8.691884835749899 3.9737e-06 deg node 290.9804713990223 3.0453e-05 deg peri 161.5213025081576 5.4523e-05 deg M 88.93041542533295 4.4406e-05 deg tp 2458527.174386255196 (2019-Feb-12.67438625) 0.00023642 TDB period 1916.07359679093 5.25 1.2466e-05 3.413e-08 d yr n .1878842235511901 1.2224e-09 deg/d Q 3.191197332006912 1.3842e-08 au   Orbit Determination Parameters    # obs. used (total)      2576      data-arc span      31276 days (85.63 yr)      first obs. used      1934-12-04      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43418      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:20:00   Additional Information  Earth MOID = 1.86522 au   Jupiter MOID = 1.94428 au   T_jup = 3.227  [ 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 10.8   n/a MPO435708   diameter diameter 24.450 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 9.380 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Bennefeld, C.; Cantue, J.; Holly, V.; Jordon, L.; Martin, T.; Soar, E.; Swinney, T. (2009) Minor Planet Bull. 36, 45-48.] [Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted.] [Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2018) Icarus 299, 84-96.] geometric albedo albedo 0.144   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.790   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.87, mean=8.39, max.=12.90) deg. U-B UB 0.425   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=3.87, mean=8.39, max.=12.90) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 1339 Desagneauxa (1934 XB)          Discovered 1934-Dec-04 by Boyer, L. at Algiers Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1934 XB = 1951 AF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 04:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin