+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   698 Ernestina (A910 ED) Classification: Main-belt Asteroid          SPK-ID: 2000698 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1109122657891263 3.7347e-08   a 2.867586429388019 9.5802e-09 au q 2.549535921158443 1.0888e-07 au i 11.53076144957951 4.4041e-06 deg node 40.62769815183937 1.8066e-05 deg peri 98.56664796218307 2.6583e-05 deg M 310.6422478374644 1.9071e-05 deg tp 2459443.679003088819 (2021-Aug-17.17900309) 9.4171e-05 TDB period 1773.671556672393 4.86 8.8884e-06 2.434e-08 d yr n .2029688070746314 1.0171e-09 deg/d Q 3.185636937617594 1.0643e-08 au   Orbit Determination Parameters    # obs. used (total)      3208      data-arc span      40960 days (112.14 yr)      first obs. used      1908-11-28      last obs. used      2021-01-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40172      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:48:57   Additional Information  Earth MOID = 1.59326 au   Jupiter MOID = 1.91193 au   T_jup = 3.260  [ 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 10.96   n/a E2021B10   diameter diameter 27.037 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 5.0363 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Ivanova, V.G.; Apostolovska, G.; Borisov, G.B.; Bilkina, B.I. (2002) Proc. ACM 2002, ESA SP 500, 505-508.] [Pray, D.P.; Galad, A.; Gajdos, S.; Vilagi, J.; et al. (2006) Minor Planet Bull. 33, 92-95.] [Polishook, D.; Brosch, N. (2009) Icarus 199, 319-332.] [Apostolovska, G.; Kostov, A.; Bilkina, B.; Ivanova, V.; Donchev, Z. (2011) Bulg. J. Phys. 38, 325-328.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.095   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   698 Ernestina (A910 ED)          Discovered 1910-Mar-05 by Helffrich, J. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A910 ED = A908 WB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 14:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin