+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   65 Cybele Classification: Outer Main-belt Asteroid          SPK-ID: 2000065 [ 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 66 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1101298407533855 4.1522e-08   a 3.425818029784689 1.0075e-08 AU q 3.048533235714424 1.4005e-07 AU i 3.562871038320909 5.5168e-06 deg node 155.6508705125549 6.7645e-05 deg peri 102.5594386974543 7.1165e-05 deg M 279.464981517288 2.2794e-05 deg tp 2456918.616144157080 (2014-Sep-18.11614416) 0.00014799 JED period 2316.033638666001 6.34 1.0217e-05 2.797e-08 d yr n .1554381568513635 6.857e-10 deg/d Q 3.803102823854954 1.1185e-08 AU   Orbit Determination Parameters    # obs. used (total)      1918      data-arc span      55540 days (152.06 yr)      first obs. used      1861-03-12      last obs. used      2013-04-04      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .61149      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:31:58   Additional Information  Earth MOID = 2.03637 AU   T_jup = 3.129  [ 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 6.62 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17 magnitude slope G 0.01   n/a PDS3 (MPC 17257) Fit diameter diameter 237.26 km 4.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17 rotation period rot_per 6.0814 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Schober, H.J.; Scaltriti, F.; Zappala, V.; Harris, A.W. (1980) Astron. Astrophys. 91, 1-6.] [Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.] [Pilcher, F.; Stephens, R.D. (2010) Minor Planet Bul. 37, 8.] [Pilcher, F. (2012) Minor Planet Bul. 39, 57-60.] geometric albedo albedo 0.0706   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17 B-V BV .690 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=17; phase (min.=1.75, mean=10.38, max.=18.00) deg. U-B UB .271 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=7; phase (min.=1.75, mean=4.51, max.=10.04) 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 Xc   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) 65 Cybele          Discovered 1861-Mar-08 by Tempel, E. W. at Marseille Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1949 YQ  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-18 12:01 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin