+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 48 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1109758254833477 2.1852e-08   a 2.867997521207502 9.314e-09 au q 2.549719128807304 6.5571e-08 au i 11.53009749559764 6.0899e-07 deg node 40.62152466007103 1.4968e-06 deg peri 98.49616052790283 6.2039e-06 deg M 350.4869582241831 6.7566e-06 deg tp 2459443.379555750693 (2021-Aug-16.87955575) 3.3362e-05 TDB period 1774.05297568983 4.86 8.6421e-06 2.366e-08 d yr n .2029251690525284 9.8852e-10 deg/d Q 3.186275913607699 1.0348e-08 au   Orbit Determination Parameters    # obs. used (total)      3406      data-arc span      41091 days (112.50 yr)      first obs. used      1908-11-28      last obs. used      2021-05-30      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .39352      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 11:26:43   Additional Information  Earth MOID = 1.59426 au   Jupiter MOID = 1.91093 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-Jul-29 10:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin