+ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .185034988812956 3.3435e-08   a 3.098675095025853 1.0785e-08 au q 2.525311783482759 1.0599e-07 au i 3.305556795554363 3.5158e-06 deg node 148.8978383087392 5.574e-05 deg peri 203.7812161119752 5.6322e-05 deg M 318.3936578850398 8.5233e-06 deg tp 2459230.760542914219 (2021-Jan-16.26054291) 4.7636e-05 TDB period 1992.335572785504 5.45 1.0402e-05 2.848e-08 d yr n .1806924520735633 9.434e-10 deg/d Q 3.672038406568947 1.2781e-08 au   Orbit Determination Parameters    # obs. used (total)      3271      data-arc span      41621 days (113.95 yr)      first obs. used      1906-08-24      last obs. used      2020-08-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44444      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:24:15   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. 2019-August); 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.] 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 ] 2020-Oct-25 12:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin