+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14308 Hardeman (5193 T-3) Classification: Main-belt Asteroid          SPK-ID: 2014308 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2012847153087209 4.0893e-08   a 3.003636091957297 1.4881e-08 au q 2.399050056296673 1.2043e-07 au i 12.52786754985897 3.4391e-06 deg node 151.3458807549434 2.0571e-05 deg peri 82.48340984464376 2.1826e-05 deg M 203.325732935967 8.9796e-06 deg tp 2459827.993458207831 (2022-Sep-05.49345821) 5.0336e-05 TDB period 1901.382087417509 5.21 1.413e-05 3.869e-08 d yr n .1893359585021433 1.407e-09 deg/d Q 3.608222127617921 1.7876e-08 au   Orbit Determination Parameters    # obs. used (total)      2040      data-arc span      15445 days (42.29 yr)      first obs. used      1977-10-16      last obs. used      2020-01-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46031      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 20:55:04   Additional Information  Earth MOID = 1.42844 au   Jupiter MOID = 1.58874 au   T_jup = 3.185  [ 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 12.9   n/a MPO502278   diameter diameter 9.604 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.159   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14308 Hardeman           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Sjoerd Hardeman (1982-2011) was a member of the Jongeren WerkGroep voor sterrenkunde (Dutch Youth Association for astronomy). He was a leader on several astronomy holiday camps and gave many presentations on astronomy. He died from leukemia shortly before defending his PhD. 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 2018-10-26 Last Updated: 2019-04-09 [ show close-approach data ] Alternate Designations  5193 T-3 = 1980 DV  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-18 12:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin