+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1481 Tubingia (1938 DR) Classification: Main-belt Asteroid          SPK-ID: 2001481 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0460048832424212 5.9274e-08   a 3.017324001458764 1.899e-08 AU q 2.878512363067098 1.8034e-07 AU i 3.517340674791048 7.4278e-06 deg node 353.784157959579 9.7551e-05 deg peri 312.636050088615 0.00012427 deg M 342.5549289638302 7.9542e-05 deg tp 2456493.268725356135 (2013-Jul-19.76872536) 0.00042316 JED period 1914.394103581765 5.24 1.8073e-05 4.948e-08 d yr n .1880490539155195 1.7753e-09 deg/d Q 3.156135639850429 1.9864e-08 AU   Orbit Determination Parameters    # obs. used (total)      1483      data-arc span      29233 days (80.04 yr)      first obs. used      1933-03-25      last obs. used      2013-04-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54541      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:44:49   Additional Information  Earth MOID = 1.86512 AU   T_jup = 3.243  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.34 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5 diameter diameter 33.26 km 1.7 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5 rotation period rot_per 24. h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Brinsfield, J.W. (2009) Minor Planet Bul. 36, 64-66.] geometric albedo albedo 0.1167   0.013 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5 B-V BV .920 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=2.86 deg. U-B UB .370 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=2.86 deg. 1481 Tubingia (1938 DR)          Discovered 1938-Feb-07 by Reinmuth, K. at Heidelberg (024) Independent discovery Feb. 22 by Y. Vaisala, Turku, was announced first Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1938 DR = 1930 UL = 1933 FT1 = 1933 FY1 = 1935 SY1 = 1938 CN = 1938 ES = 1939 LD = 1941 WF = 1950 OQ = 1955 LA = 1959 GY = A907 GQ = A912 FB  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-Jun-20 13:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin