+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   885 Ulrike (A917 SV) Classification: Main-belt Asteroid          SPK-ID: 2000885 [ 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 44 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1850349879442003 3.3182e-08   a 3.09867509407182 1.0181e-08 au q 2.525311785397247 1.0553e-07 au i 3.305556923356106 3.5032e-06 deg node 148.8978498426148 5.1382e-05 deg peri 203.781204126068 5.2007e-05 deg M 318.3936586458628 7.9745e-06 deg tp 2459230.760538597282 (2021-Jan-16.26053860) 4.448e-05 TDB period 1992.335571865391 5.45 9.8193e-06 2.688e-08 d yr n .1806924521570119 8.9055e-10 deg/d Q 3.672038402746393 1.2065e-08 au   Orbit Determination Parameters    # obs. used (total)      3530      data-arc span      41722 days (114.23 yr)      first obs. used      1906-08-24      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42949      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:56:51   Additional Information  Earth MOID = 1.52037 au   Jupiter MOID = 1.76533 au   T_jup = 3.193  [ 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 10.7   n/a MPO347520   diameter diameter 30.537 km 0.756 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 4.90 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Menke, J. (2005) Minor Planet Bull. 32, 85-88.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.109   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   885 Ulrike (A917 SV)          Discovered 1917-Sep-23 by Belyavskij, S. at Simeis Independent discovery Sept. 26 by M. Wolf, Heidelberg, was announced first. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A917 SV = 1933 QQ = 1934 XL = A906 SE  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 05:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin