+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226 Weringia (A882 OA) Classification: Main-belt Asteroid          SPK-ID: 2000226 [ 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 .2044499667548183 1.9247e-08   a 2.712925698693847 6.2955e-09 au q 2.158268129787598 5.3539e-08 au i 15.9718120149848 2.2205e-07 deg node 134.9461410123381 1.0107e-06 deg peri 154.1184208461927 4.4487e-06 deg M 7.900030377391657 3.0929e-06 deg tp 2459164.683632576024 (2020-Nov-11.18363258) 1.4003e-05 TDB period 1632.131986420099 4.47 5.6812e-06 1.555e-08 d yr n .2205703968767993 7.6777e-10 deg/d Q 3.267583267600096 7.5827e-09 au   Orbit Determination Parameters    # obs. used (total)      3300      data-arc span      50467 days (138.17 yr)      first obs. used      1882-09-08      last obs. used      2020-11-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .37818      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 10:31:20   Additional Information  Earth MOID = 1.15075 au   Jupiter MOID = 2.02172 au   T_jup = 3.277  [ 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 9.91   n/a E2021B10   diameter diameter 31.494 km 0.310 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 11.147 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Oey, J. (2008) Minor Planet Bull. 35, 132-135.] [Oey, J. (2009) Minor Planet Bull. 36, 162-165.] [Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.352   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   SMASSII spectral type spec_B S   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) 226 Weringia (A882 OA)          Discovered 1882-Jul-19 by Palisa, J. at Vienna Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A882 OA = A912 CC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 09:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin