+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   84 Klio (A865 QA) Classification: Main-belt Asteroid          SPK-ID: 2000084 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 83 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2361857641256012 4.1384e-08   a 2.361855750212587 2.5699e-09 au q 1.804019045094182 9.7541e-08 au i 9.317399464603684 4.671e-06 deg node 327.514587840625 2.2335e-05 deg peri 15.14255256795609 2.3739e-05 deg M 215.9097558312282 1.0079e-05 deg tp 2459531.152919429187 (2021-Nov-12.65291943) 3.7502e-05 TDB period 1325.801424631839 3.63 2.1639e-06 5.924e-09 d yr n .2715338762740945 4.4318e-10 deg/d Q 2.919692455330991 3.1769e-09 au   Orbit Determination Parameters    # obs. used (total)      2854      data-arc span      56543 days (154.81 yr)      first obs. used      1865-08-25      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43951      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:06:52   Additional Information  Earth MOID = .797269 au   Jupiter MOID = 2.49014 au   T_jup = 3.495  [ 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 9.4   n/a MPO502153 IRAS observations used: 12 diameter diameter 79.16 km 1.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12 rotation period rot_per 23.562 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Pilcher, F. (2008) Minor Planet Bull. 35, 71-72.] geometric albedo albedo 0.0527   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 12 B-V BV 0.733   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=13.17, mean=18.01, max.=26.13) deg. U-B UB 0.445   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.17, mean=13.95, max.=14.74) deg. Tholen spectral type spec_T G   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo 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) 84 Klio (A865 QA)          Discovered 1865-Aug-25 by Luther, R. at Dusseldorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A865 QA = 1974 VJ3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 17:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin