+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16930 Respighi (1998 FF74) Classification: Outer Main-belt Asteroid          SPK-ID: 2016930 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1621888829834519 4.2989e-08   a 3.235769586870159 1.6879e-08 au q 2.710963731983862 1.4102e-07 au i 3.102651699216981 3.6145e-06 deg node 78.02709241851771 9.3163e-05 deg peri 301.4079469723379 9.3903e-05 deg M 122.4548516076291 1.3004e-05 deg tp 2458477.333490148730 (2018-Dec-24.83349015) 7.4471e-05 TDB period 2126.007586703389 5.82 1.6635e-05 4.554e-08 d yr n .1693314747565036 1.3249e-09 deg/d Q 3.760575441756456 1.9616e-08 au   Orbit Determination Parameters    # obs. used (total)      1669      data-arc span      8826 days (24.16 yr)      first obs. used      1997-01-14      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50235      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:47:13   Additional Information  Earth MOID = 1.71375 au   Jupiter MOID = 1.70326 au   T_jup = 3.162  [ 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 13.49   n/a E2021B10   diameter diameter 10.735 km 0.324 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.058   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16930 Respighi           Discovered 1998 Mar. 29 at Osservatorio San Vittore. Italian astronomer Lorenzo Respighi (1824-1889) was professor of optics and astronomy and director successively of the observatories of Bologna and of Campidoglio in Rome. He compiled stellar catalogues, observed the planets and discovered three comets. He introduced the use of the objective prism in stellar spectroscopy. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020427/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1998 FF74 = 1999 JJ125  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin