+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   6406 Mikejura (1992 MJ) Classification: Main-belt Asteroid          SPK-ID: 2006406 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1778724801561087 1.012e-08   a 2.27531184540169 5.067e-09 au q 1.870596484331519 2.3256e-08 au i 8.179333647073626 4.0385e-07 deg node 146.1768171419923 5.779e-06 deg peri 205.5372019005009 7.126e-06 deg M 37.94734098424939 4.6786e-06 deg tp 2459068.358671860700 (2020-Aug-06.85867186) 1.627e-05 TDB period 1253.602410505994 3.43 4.1876e-06 1.147e-08 d yr n .2871723897329556 9.5928e-10 deg/d Q 2.680027206471861 5.9683e-09 au   Orbit Determination Parameters    # obs. used (total)      2556      data-arc span      16119 days (44.13 yr)      first obs. used      1977-01-21      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43322      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 18:40:31   Additional Information  Earth MOID = .865931 au   Jupiter MOID = 2.74642 au   T_jup = 3.575  [ 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 13.51   n/a E2021B10   diameter diameter 4.062 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 6.819 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Higgins, D.; Goncalves, R.M.D. (2007) Minor Planet Bull. 34, 16-18.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.512   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   6406 Mikejura           Discovered 1992 June 28 by H. E. Holt at Palomar. Michael Jura (1947-2016) was as an American astronomer and UCLA professor whose work on polluted white dwarfs first enabled the measurement of the chemical compositions of extrasolar asteroids. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2017-01-12 Last Updated: 2017-01-17 [ show close-approach data ] Alternate Designations  1992 MJ = 1977 BB = 1978 GY4 = 1979 YN6 = 1991 CT2 = 1991 DQ2 = 1991 ET5 = 1993 XV2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 04:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin