+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 88 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2363237557779413 3.0148e-08   a 2.361638012752183 2.087e-09 au q 1.803526847790634 7.0886e-08 au i 9.317586089263054 5.61e-07 deg node 327.5157657366094 1.4094e-06 deg peri 15.15246346518853 1.4524e-06 deg M 270.2186282994173 2.5711e-06 deg tp 2459531.099474057423 (2021-Nov-12.59947406) 9.6995e-06 TDB period 1325.618092109188 3.63 1.7572e-06 4.811e-09 d yr n .2715714293150637 3.5998e-10 deg/d Q 2.919749177713733 2.5802e-09 au   Orbit Determination Parameters    # obs. used (total)      2971      data-arc span      56822 days (155.57 yr)      first obs. used      1865-08-25      last obs. used      2021-03-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44472      source      ORB      producer      Otto Matic      solution date      2021-May-03 17:49:56   Additional Information  Earth MOID = .79494 au   Jupiter MOID = 2.49059 au   T_jup = 3.495  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.37   n/a MPCxxxxx 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. 2020-October); 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 Alternate Designations  A865 QA = 1974 VJ3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-08 18:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin