+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   553 Kundry (A904 YA) Classification: Main-belt Asteroid          SPK-ID: 2000553 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1093278444101529 1.9704e-08   a 2.230668880949709 5.1947e-09 au q 1.986794660602669 4.5106e-08 au i 5.386347388234857 5.9763e-07 deg node 72.34761421408621 1.3535e-05 deg peri 354.9124166152112 1.9481e-05 deg M 1.828587337811762 7.5122e-06 deg tp 2459390.318920958236 (2021-Jun-24.81892096) 2.5385e-05 TDB period 1216.889348964781 3.33 4.2508e-06 1.164e-08 d yr n .29583626506901 1.0334e-09 deg/d Q 2.474543101296748 5.7627e-09 au   Orbit Determination Parameters    # obs. used (total)      3102      data-arc span      42416 days (116.13 yr)      first obs. used      1904-12-27      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .3728      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 11:14:11   Additional Information  Earth MOID = 1.00051 au   Jupiter MOID = 2.76472 au   T_jup = 3.629  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.21   n/a MPCxxxxx   diameter diameter 9.010 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 12.605 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D. (2005) Minor Planet Bull. 32, 66-68.] [Behrend, R. (2009) 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.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] geometric albedo albedo 0.287   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 553 Kundry (A904 YA)          Discovered 1904-Dec-27 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A904 YA = 1932 CL = 1957 UB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-06 04:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin