+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   62 Erato (A860 RD) Classification: Main-belt Asteroid          SPK-ID: 2000062 [ 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 115 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .167660410335139 3.325e-08   a 3.128634484992347 1.1815e-08 au q 2.604086343449863 1.0213e-07 au i 2.236571482995822 3.857e-06 deg node 125.1225179079269 0.00010018 deg peri 277.1761759924165 0.00010086 deg M 310.1937689559663 1.2955e-05 deg tp 2459280.148083220931 (2021-Mar-06.64808322) 7.3104e-05 TDB period 2021.299501071061 5.53 1.1449e-05 3.135e-08 d yr n .178103244872539 1.0088e-09 deg/d Q 3.65318262653483 1.3795e-08 au   Orbit Determination Parameters    # obs. used (total)      3275      data-arc span      41830 days (114.52 yr)      first obs. used      1906-01-24      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48455      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:08:46   Additional Information  Earth MOID = 1.61392 au   Jupiter MOID = 1.75627 au   T_jup = 3.191  [ 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 8.7   n/a MPO492748 IRAS observations used: 15 diameter diameter 106.921 km 0.658 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 9.2213 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durkee, R.I. (2005) Minor Planet Bull. 32, 84.] [Gonclaves, R.M.D.; Behrend, R. (2006) Minor Planet Bull. 33, 7.] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2018) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.708   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=15.59, mean=16.44, max.=17.86) deg. U-B UB 0.378   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=15.59, mean=16.44, max.=17.86) deg. Tholen spectral type spec_T BU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 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) 62 Erato (A860 RD)          Discovered 1860-Sep-14 by Lesser, O. and Forster, W. at Berlin Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A860 RD = 1935 FW = 1953 OS = 2002 JN104 = A906 BE = A907 GE = A910 VA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-20 23:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin