+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1725329705515139 3.0737e-08   a 2.396830378458672 6.9056e-09 au q 1.983298113355088 7.3947e-08 au i 4.670834467542359 3.9137e-06 deg node 186.3409328205045 3.7672e-05 deg peri 295.4953042818291 3.9058e-05 deg M 19.16706846563568 1.0228e-05 deg tp 2459128.338164554401 (2020-Oct-05.83816455) 3.845e-05 TDB period 1355.359104966497 3.71 5.8575e-06 1.604e-08 d yr n .2656122637025402 1.1479e-09 deg/d Q 2.810362643562256 8.097e-09 au   Orbit Determination Parameters    # obs. used (total)      2851      data-arc span      30008 days (82.16 yr)      first obs. used      1939-01-26      last obs. used      2021-03-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44253      source      ORB      producer      Otto Matic      solution date      2021-May-03 20:11:01   Additional Information  Earth MOID = 1.00413 au   Jupiter MOID = 2.27874 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 12.84   n/a MPCxxxxx   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. 2020-October); 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 ] 2021-May-14 01:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin