+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   552 Sigelinde (A904 XB) Classification: Main-belt Asteroid          SPK-ID: 2000552 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0900518064300659 2.1177e-08   a 3.14962394800012 1.2185e-08 au q 2.865994621907313 6.5353e-08 au i 7.693987436095592 2.5945e-07 deg node 266.8915819294485 2.2742e-06 deg peri 346.9029224032163 6.8364e-06 deg M 78.4800463147515 6.847e-06 deg tp 2458755.414718698038 (2019-Sep-28.91471870) 3.7505e-05 TDB period 2041.674397414167 5.59 1.1848e-05 3.244e-08 d yr n .17632586295638 1.0232e-09 deg/d Q 3.433253274092927 1.3282e-08 au   Orbit Determination Parameters    # obs. used (total)      4441      data-arc span      42427 days (116.16 yr)      first obs. used      1904-11-17      last obs. used      2021-01-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .3705      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:04:00   Additional Information  Earth MOID = 1.85019 au   Jupiter MOID = 1.63451 au   T_jup = 3.188  [ 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 9.67   n/a E2021B10   diameter diameter 88.697 km 0.966 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 17.156 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Oey, J. (2009) Minor Planet Bull. 36, 4-6.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.036   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   552 Sigelinde (A904 XB)          Discovered 1904-Dec-14 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A904 XB = 1941 MG  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 20:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin