+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2008298328456021 8.865e-09   a 2.241863410005802 5.8323e-09 au q 1.791630356111666 1.9527e-08 au i 8.197328768424944 3.2977e-07 deg node 146.9062139624068 2.7253e-06 deg peri 142.7680840131701 5.5562e-06 deg M 207.3926184096675 4.4332e-06 deg tp 2459720.238860814089 (2022-May-20.73886081) 1.6289e-05 TDB period 1226.06120322115 3.36 4.7845e-06 1.31e-08 d yr n .2936231886745913 1.1458e-09 deg/d Q 2.692096463899939 7.0036e-09 au   Orbit Determination Parameters    # obs. used (total)      3039      data-arc span      29191 days (79.92 yr)      first obs. used      1941-04-19      last obs. used      2021-03-21      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43513      source      ORB      producer      Otto Matic      solution date      2021-May-03 20:03:08   Additional Information  Earth MOID = .781484 au   Jupiter MOID = 2.5185 au   T_jup = 3.594  [ 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 12.81   n/a MPCxxxxx   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 Alternate Designations  1978 LA = 1928 QE = 1941 HG = 1948 MD = 1975 RU  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-May-14 00:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin