+ 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 | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1093208214635997 3.0251e-08   a 2.231661398511861 5.6079e-09 au q 1.987694341197939 6.9387e-08 au i 5.386848840416536 3.1215e-06 deg node 72.3631745210062 3.9521e-05 deg peri 354.6174498740422 4.3445e-05 deg M 244.9752706450996 1.8819e-05 deg tp 2459389.571660337302 (2021-Jun-24.07166034) 6.4025e-05 TDB period 1217.701606489036 3.33 4.5899e-06 1.257e-08 d yr n .2956389299986043 1.1144e-09 deg/d Q 2.475628455825783 6.2209e-09 au   Orbit Determination Parameters    # obs. used (total)      2863      data-arc span      42312 days (115.84 yr)      first obs. used      1904-12-27      last obs. used      2020-10-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .37993      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:28:22   Additional Information  Earth MOID = 1.00165 au   Jupiter MOID = 2.76471 au   T_jup = 3.628  [ 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 12.2   n/a MPO384749   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. 2019-August); 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.] 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 [ show close-approach data ] Alternate Designations  A904 YA = 1932 CL = 1957 UB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-30 18:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin