+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   76 Freia Classification: Outer Main-belt Asteroid          SPK-ID: 2000076 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1645695998738897 4.4949e-08   a 3.412377418296639 1.1512e-08 AU q 2.850803831948865 1.5003e-07 AU i 2.11789970811608 4.5246e-06 deg node 204.5320867996146 0.00014393 deg peri 253.5667008255932 0.00014476 deg M 298.9108671736272 1.5763e-05 deg tp 2456791.201856924999 (2014-May-13.70185693) 0.00010197 JED period 2302.417172834355 6.30 1.1651e-05 3.19e-08 d yr n .1563574161309906 7.9125e-10 deg/d Q 3.973951004644414 1.3407e-08 AU   Orbit Determination Parameters    # obs. used (total)      1646      data-arc span      54326 days (148.74 yr)      first obs. used      1864-04-23      last obs. used      2013-01-18      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .63493      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 15:09:05   Additional Information  Earth MOID = 1.86796 AU   T_jup = 3.121  [ 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 7.90 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15 diameter diameter 183.66 km 4.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15 rotation period rot_per 9.969 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.] [Lagerkvist, C.-I.; Hahn, G.; Magnusson, P.; Rickman, H.; Hammarback, G. (1986) in Asteroids, Comets, Meteors II. C.-I. Lagerkvist, B.A. Lindblad, M. Lundstedt, H. Rickman, Uppsala, eds. pp. 67-72.] [Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.] [Armstrong, J.C.; Nellermoe, B.L.; Reitzler, L.E. (1996) I.A.P.P.P. Comm. 63, 59-68.] [Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, N.M.; Krugly, Yu.N.; et al. (2005) Abstr. IAU Symp. 229, p. 133.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Shevchenko, V.G.; Chiorny, V.G.; Gaftonyuk, M.; Krugly, Y.N.; et al. (2008) Icarus 196, 601-611.] [Stephens, R.D.; Warner, B.D. (2008) Minor Planet Bul. 35, 84-85.] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.0362   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 15 B-V BV .704 mag .013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=.55, mean=10.43, max.=16.49) deg. U-B UB .298 mag .047 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=.55, mean=11.26, max.=20.23) deg. Tholen spectral type spec_T P   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B X   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) 76 Freia          Discovered 1862-Oct-21 by D'Arrest, H. at Copenhagen Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A911 OB  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-24 14:18 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin