+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2199 Klet (1978 LA) Classification: Main-belt Asteroid          SPK-ID: 2002199 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2008927360315463 2.7859e-08   a 2.241724608693889 6.1855e-09 au q 1.791378418624126 6.2192e-08 au i 8.196821524343539 3.2164e-06 deg node 146.9094855854841 2.6879e-05 deg peri 142.7328433318745 2.8446e-05 deg M 148.7122011452076 1.0812e-05 deg tp 2458494.074090246121 (2019-Jan-10.57409025) 3.6202e-05 TDB period 1225.947340617867 3.36 5.074e-06 1.389e-08 d yr n .2936504595854526 1.2154e-09 deg/d Q 2.692070798763652 7.4281e-09 au   Orbit Determination Parameters    # obs. used (total)      2696      data-arc span      29066 days (79.58 yr)      first obs. used      1941-04-19      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45404      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:04:56   Additional Information  Earth MOID = .783177 au   Jupiter MOID = 2.51911 au   T_jup = 3.594  [ 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 12.8   n/a MPO452192   diameter diameter 6.961 km 0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 12.865 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Pravec, P.; Koehn, B.W. (2019) Minor Plantet Bull. 46, 238-265.] geometric albedo albedo 0.210   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   2199 Klet           Discovered 1978 June 6 by A. Mrkos at the Klet Observatory. Named for the observatory at which this minor planet was discovered and for the mountain in southern Bohemia on which the observatory is located. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC 5524 Last Updated: 2006-03-21 [ show close-approach data ] Alternate Designations  1978 LA = 1928 QE = 1941 HG = 1948 MD = 1975 RU  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-25 20:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin