+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18787 Kathermann (1999 JV53) Classification: Main-belt Asteroid          SPK-ID: 2018787 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1956202264076845 4.1576e-08   a 2.425060704421605 9.8842e-09 au q 1.950669780370271 1.035e-07 au i 9.655423392222222 4.2014e-06 deg node 63.25488470399826 1.9729e-05 deg peri 156.9234984861823 2.1769e-05 deg M 269.7048358329657 1.0441e-05 deg tp 2459546.474698566252 (2021-Nov-27.97469857) 4.1347e-05 TDB period 1379.374993476371 3.78 8.4332e-06 2.309e-08 d yr n .2609877674327774 1.5956e-09 deg/d Q 2.899451628472938 1.1818e-08 au   Orbit Determination Parameters    # obs. used (total)      1214      data-arc span      14942 days (40.91 yr)      first obs. used      1980-04-13      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47774      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:37:57   Additional Information  Earth MOID = .944571 au   Jupiter MOID = 2.08546 au   T_jup = 3.466  [ 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 14.8   n/a MPO502311   diameter diameter 2.755 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 41.82 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm] [Oey, J. (2016) Minor Planet Bull. 43, 45-51.] geometric albedo albedo 0.422   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18787 Kathermann           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Katherine Laura Hermann (b. 1987) was awarded third place in the 2003 Intel International Science and Engineering Fair for her environmental science project. She attends the Boulder High School, Boulder, Colorado, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040830/MPCPages.arc Last Updated: 2004-09-06 Alternate Designations  1999 JV53 = 1980 GJ  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 06:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin