+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   50 Virginia Classification: Main-belt Asteroid          SPK-ID: 2000050 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 73 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2840054633858353 4.6264e-08   a 2.651358301597442 4.3684e-09 AU q 1.898358058550379 1.227e-07 AU i 2.833298883221446 5.4715e-06 deg node 173.6131026162665 8.8191e-05 deg peri 200.3485208632872 8.8477e-05 deg M 15.47461774821516 8.2436e-06 deg tp 2456332.717358601731 (2013-Feb-09.21735860) 3.6028e-05 JED period 1576.888767167868 4.32 3.8972e-06 1.067e-08 d yr n .2282976500914323 5.6422e-10 deg/d Q 3.404358544644505 5.6091e-09 AU   Orbit Determination Parameters    # obs. used (total)      1785      data-arc span      56647 days (155.09 yr)      first obs. used      1857-10-19      last obs. used      2012-11-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .60737      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 14:58:10   Additional Information  Earth MOID = .898801 AU   T_jup = 3.330  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.24 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3 diameter diameter 99.82 km 5.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3 rotation period rot_per 14.315 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Shevchenko, V.G.; Piironen, J.; Erikson, A.; Bel'skaya, I.N.; et al. (1997) Planet. Space Sci. 45, 1615-1623.] [Pilcher, F. (2009) Minor Planet Bul. 36, 25-27.] geometric albedo albedo 0.0357   0.004 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 3 B-V BV .703 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=2.19, mean=15.69, max.=23.71) deg. U-B UB .347 mag .045 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=3; phase (min.=2.19, mean=15.69, max.=23.71) deg. Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B Ch   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) 50 Virginia          Discovered 1857-Oct-04 by Ferguson, J. at Washington Independent discovery Oct. 19 by R. Luther, Dusseldorf, was announced first. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1977 LU1 = A900 SB = A909 WA  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-Jun-20 05:19 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin