+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1572 Posnania (1949 SC) Classification: Main-belt Asteroid          SPK-ID: 2001572 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2049427891419757 4.6311e-08   a 3.111778357675717 1.3149e-08 au q 2.474041821862019 1.441e-07 au i 13.26767105589352 4.9546e-06 deg node 5.912154775946338 1.626e-05 deg peri 353.9982462229201 1.844e-05 deg M 318.3560226035429 1.0234e-05 deg tp 2459232.432234505979 (2021-Jan-17.93223451) 5.7797e-05 TDB period 2004.98630635737 5.49 1.2708e-05 3.479e-08 d yr n .1795523484916178 1.1381e-09 deg/d Q 3.749514893489415 1.5844e-08 au   Orbit Determination Parameters    # obs. used (total)      3399      data-arc span      33374 days (91.37 yr)      first obs. used      1929-02-01      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .35733      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:33:04   Additional Information  Earth MOID = 1.47159 au   Jupiter MOID = 1.70531 au   T_jup = 3.146  [ 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 10.1   n/a MPO435711   diameter diameter 31.500 km 0.739 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 8.048 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Michalowski, T.; Pych, W.; Kwiatkowski, T.; Kryszczynska, A.; et al. (2001) Astron. Astrophys. 371, 748-752.] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] [Santana-Ros, T.; Dudzinski, G.; Bartczak, P. (2017) in Assessment and Mitigation of Asteroid Impact Hazards, Astrophys. and Space Science Proceedings 45, 55.] geometric albedo albedo 0.521   0.291 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1572 Posnania (1949 SC)          Discovered 1949-Sep-22 by Dobrzycki, J. and Kwiek, A. at Posen Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1949 SC = 1929 CJ = 1933 WN = 1933 YB = 1938 QH = 1949 QE2 = 1949 TD = 1949 YK = 1951 AO1 = 1952 FN1 = A908 EC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-10 15:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin