+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2041409169552857 1.1003e-08   a 3.108686931105804 1.0339e-08 au q 2.474076730462952 3.4038e-08 au i 13.273741181188 8.358e-07 deg node 5.886978193464987 2.1472e-06 deg peri 354.1031340465491 6.8076e-06 deg M 29.44427363815302 4.4372e-06 deg tp 2459232.757184975825 (2021-Jan-18.25718498) 2.4421e-05 TDB period 2001.999238735536 5.48 9.9873e-06 2.734e-08 d yr n .1798202481971852 8.9706e-10 deg/d Q 3.743297131748656 1.2449e-08 au   Orbit Determination Parameters    # obs. used (total)      3877      data-arc span      33607 days (92.01 yr)      first obs. used      1929-02-01      last obs. used      2021-02-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .34039      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:31:39   Additional Information  Earth MOID = 1.4708 au   Jupiter MOID = 1.71309 au   T_jup = 3.147  [ 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 10.27   n/a E2021B10   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. 2020-October); 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.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] 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 ] 2021-Jul-29 23:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin