+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   901 Brunsia (A918 QA) Classification: Main-belt Asteroid          SPK-ID: 2000901 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2211178964512938 1.6391e-08   a 2.223983748625094 4.0272e-09 au q 1.732221140387251 3.7121e-08 au i 3.446796782032129 9.6889e-07 deg node 265.0770263327678 9.6768e-06 deg peri 68.33538689493031 9.9215e-06 deg M 306.04141561105 3.6387e-06 deg tp 2459382.074094719134 (2021-Jun-16.57409472) 1.2616e-05 TDB period 1211.423072697852 3.32 3.2905e-06 9.009e-09 d yr n .2971711601944944 8.0717e-10 deg/d Q 2.715746356862939 4.9177e-09 au   Orbit Determination Parameters    # obs. used (total)      3143      data-arc span      41911 days (114.75 yr)      first obs. used      1905-11-04      last obs. used      2020-08-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40404      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:36:03   Additional Information  Earth MOID = .723746 au   Jupiter MOID = 2.66225 au   T_jup = 3.613  [ 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 11.6   n/a MPO502161   diameter diameter 13.210 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.1363 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Vander Haagen, G. (2009) Minor Planet Bull. 36, 136-138.] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 234-239.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Klinglesmith III, D.K. (2017) Minor Planet Bull. 44, 345-348.] geometric albedo albedo 0.234   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.901   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=22.46 deg. U-B UB 0.546   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=22.46 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 901 Brunsia (A918 QA)          Discovered 1918-Aug-30 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A918 QA = 1941 MH = 1948 VJ = 1970 EP1 = A905 VD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 12:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin