+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58217 Peterhebel (1992 SP16) Classification: Main-belt Asteroid          SPK-ID: 2058217 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .211883640992048 4.1463e-08   a 2.60921462254718 1.4174e-08 au q 2.056364728192191 1.1231e-07 au i 2.807329503044758 4.624e-06 deg node 348.1642906288725 7.7999e-05 deg peri 19.7490152171848 7.8772e-05 deg M 197.2704019592445 1.3447e-05 deg tp 2459696.368509174524 (2022-Apr-26.86850917) 6.1431e-05 TDB period 1539.441295984078 4.21 1.2544e-05 3.434e-08 d yr n .2338510737233877 1.9055e-09 deg/d Q 3.162064516902169 1.7177e-08 au   Orbit Determination Parameters    # obs. used (total)      982      data-arc span      10125 days (27.72 yr)      first obs. used      1992-09-21      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53748      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:51:54   Additional Information  Earth MOID = 1.05556 au   Jupiter MOID = 2.30437 au   T_jup = 3.377  [ 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 15.2   n/a MPO468481   diameter diameter 2.325 km 0.525 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.327   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58217 Peterhebel           Discovered 1992 Sept. 24 by L. D. Schmadel and F. Börngen at Tautenburg. Peter Hebel (b. 1957) is a most interested amateur astronomer, but as a doctor of medicine his chief occupation is that of an operating surgeon at the Medical University of Graz, Austria, where he has saved and improved the life of many patients. Name proposed by H. Haupt. 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 2015-03-05 Last Updated: 2015-03-09 [ show close-approach data ] Alternate Designations  1992 SP16 = 1996 PN6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 19:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin