+ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2010544126223681 1.4773e-08   a 3.004146380397821 1.3668e-08 au q 2.400149494455324 4.848e-08 au i 12.52834076361374 3.6175e-07 deg node 151.3396981507409 3.6794e-06 deg peri 82.48096856825592 5.5618e-06 deg M 241.1829272116748 6.6941e-06 deg tp 2459828.206188539612 (2022-Sep-05.70618854) 3.7579e-05 TDB period 1901.866647370093 5.21 1.298e-05 3.554e-08 d yr n .1892877192508786 1.2918e-09 deg/d Q 3.608143266340318 1.6416e-08 au   Orbit Determination Parameters    # obs. used (total)      2259      data-arc span      15844 days (43.38 yr)      first obs. used      1977-10-16      last obs. used      2021-03-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44919      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:24:45   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 12.90   n/a MPCxxxxx   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-May-13 11:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin