+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2010543837291691 3.9705e-08   a 3.004146376065255 1.4644e-08 au q 2.400149577793238 1.1734e-07 au i 12.52833576974375 3.3557e-06 deg node 151.3396853386285 2.0162e-05 deg peri 82.48097515336093 2.1408e-05 deg M 241.1829325645266 9.1015e-06 deg tp 2459828.206158902783 (2022-Sep-05.70615890) 5.0372e-05 TDB period 1901.866643255799 5.21 1.3907e-05 3.808e-08 d yr n .1892877196603633 1.3841e-09 deg/d Q 3.608143174337272 1.7589e-08 au   Orbit Determination Parameters    # obs. used (total)      2200      data-arc span      15800 days (43.26 yr)      first obs. used      1977-10-16      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45232      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:17:19   Additional Information  Earth MOID = 1.42832 au   Jupiter MOID = 1.58766 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 12.89   n/a E2021B10   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 ] 2021-Mar-02 05:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin