+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 49 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1839513154570924 1.6547e-08   a 3.094842224251976 9.0658e-09 au q 2.525541925968671 5.1936e-08 au i 3.307622105531276 1.0469e-06 deg node 148.8907433102898 1.089e-05 deg peri 203.8309091377609 1.255e-05 deg M 29.96556925559948 4.7072e-06 deg tp 2459230.970185357541 (2021-Jan-16.47018536) 2.5843e-05 TDB period 1988.640121033237 5.44 8.7381e-06 2.392e-08 d yr n .1810282293877059 7.9544e-10 deg/d Q 3.664142522535281 1.0733e-08 au   Orbit Determination Parameters    # obs. used (total)      3689      data-arc span      41787 days (114.41 yr)      first obs. used      1906-08-24      last obs. used      2021-01-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42461      source      ORB      producer      Otto Matic      solution date      2021-May-03 18:58:19   Additional Information  Earth MOID = 1.51978 au   Jupiter MOID = 1.77422 au   T_jup = 3.195  [ 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 10.75   n/a E2021B10   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-Aug-03 22:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin