+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   231 Vindobona (A882 RB) Classification: Main-belt Asteroid          SPK-ID: 2000231 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1516514407766967 3.5005e-08   a 2.922758857809466 1.2053e-08 au q 2.479518265979808 1.0416e-07 au i 5.101843505707453 4.6018e-06 deg node 350.4983449657383 4.258e-05 deg peri 269.017311980321 4.5332e-05 deg M 288.2022146471967 1.7212e-05 deg tp 2459364.495867050005 (2021-May-29.99586705) 8.7867e-05 TDB period 1825.105210336204 5.00 1.1289e-05 3.091e-08 d yr n .1972489026721283 1.2201e-09 deg/d Q 3.365999449639124 1.388e-08 au   Orbit Determination Parameters    # obs. used (total)      2816      data-arc span      49479 days (135.47 yr)      first obs. used      1885-01-22      last obs. used      2020-07-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4253      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:31:56   Additional Information  Earth MOID = 1.47102 au   Jupiter MOID = 1.74333 au   T_jup = 3.256  [ 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 9.6   n/a MPO337242   diameter diameter 73.545 km 1.407 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 14.245 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] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pilcher, F. (2013) Minor Planet Bull. 40, 85-87.] [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.068   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   231 Vindobona (A882 RB)          Discovered 1882-Sep-10 by Palisa, J. at Vienna Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A882 RB = 1962 UJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 18:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin