+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2348 Michkovitch (1939 AA) Classification: Main-belt Asteroid          SPK-ID: 2002348 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1725026306154254 3.4677e-08   a 2.396680410193124 8.066e-09 au q 1.983246734690354 8.4988e-08 au i 4.670757315486831 3.9769e-06 deg node 186.346831082409 4.0539e-05 deg peri 295.5260398642969 4.1808e-05 deg M 326.0160099555447 1.0924e-05 deg tp 2459128.433853969301 (2020-Oct-05.93385397) 4.1335e-05 TDB period 1355.231900924558 3.71 6.8415e-06 1.873e-08 d yr n .2656371944568328 1.341e-09 deg/d Q 2.810114085695895 9.4574e-09 au   Orbit Determination Parameters    # obs. used (total)      2444      data-arc span      29593 days (81.02 yr)      first obs. used      1939-01-26      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46691      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 16:19:19   Additional Information  Earth MOID = 1.00415 au   Jupiter MOID = 2.27937 au   T_jup = 3.504  [ 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 12.7   n/a MPO416733   diameter diameter 4.595 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 28. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm] geometric albedo albedo 0.917   0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   2348 Michkovitch (1939 AA)          Discovered 1939-Jan-10 by Protitch, M. B. at Belgrade Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1939 AA = 1958 GR = 1965 DA = 1975 XA5 = 1978 QH1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-20 04:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin