+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1332 Marconia (1934 AA) Classification: Main-belt Asteroid          SPK-ID: 2001332 [ 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 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1327103580684451 1.5973e-08   a 3.061415164106496 1.1608e-08 au q 2.655133661481755 5.1644e-08 au i 2.457012383508967 1.3174e-06 deg node 13.62082099893082 2.3606e-05 deg peri 348.8507868399994 2.6261e-05 deg M 186.3701246030923 1.0849e-05 deg tp 2460144.134310163215 (2023-Jul-18.63431016) 6.1463e-05 TDB period 1956.508641627509 5.36 1.1127e-05 3.046e-08 d yr n .184001231755632 1.0465e-09 deg/d Q 3.467696666731236 1.3148e-08 au   Orbit Determination Parameters    # obs. used (total)      3509      data-arc span      42153 days (115.41 yr)      first obs. used      1905-10-25      last obs. used      2021-03-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40626      source      ORB      producer      Otto Matic      solution date      2021-May-03 19:23:45   Additional Information  Earth MOID = 1.65097 au   Jupiter MOID = 1.98635 au   T_jup = 3.219  [ 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 10.65   n/a MPCxxxxx   diameter diameter 46.796 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 19.16 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2013) Minor Planet Bull. 40, 34-35.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] geometric albedo albedo 0.063   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B Ld   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 1332 Marconia (1934 AA)          Discovered 1934-Jan-09 by Volta, L. at Pino Torinese Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1934 AA = 1930 HQ = 1932 VC = 1935 FR = 1948 SH = 1956 GB = A905 UD = A921 TE = A921 UD = A924 EH  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-11 21:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin