+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22354 Sposetti (1992 UR8) Classification: Main-belt Asteroid          SPK-ID: 2022354 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06980920602645629 7.0026e-09   a 2.327462723384082 6.3871e-09 au q 2.164984398608465 1.4778e-08 au i 7.603191066505803 4.6987e-07 deg node 22.48607697702252 6.7486e-06 deg peri 187.2492566407595 1.739e-05 deg M 163.6746728156366 1.5885e-05 deg tp 2458610.840216531488 (2019-May-07.34021653) 5.6819e-05 TDB period 1296.947893018086 3.55 5.3387e-06 1.462e-08 d yr n .2775747598943667 1.1426e-09 deg/d Q 2.489941048159699 6.833e-09 au   Orbit Determination Parameters    # obs. used (total)      2544      data-arc span      24039 days (65.82 yr)      first obs. used      1955-04-21      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43319      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:04:50   Additional Information  Earth MOID = 1.15909 au   Jupiter MOID = 2.46875 au   T_jup = 3.558  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.96   n/a E2021B10   22354 Sposetti           Discovered 1992 Oct. 31 by F. Borngen at Tautenburg. Stefano Sposetti is an amateur astronomer and teacher who lives in the Italian-speaking part of Switzerland in the Ticino Alps. Since his youth he has been a very active observer of minor planets, comets, artificial satellites and meteors. He is also a helpful friend to budding young amateur astrometrists. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010509/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1992 UR8 = 1977 QN5 = 1985 UN1 = 1987 FP1 = 1999 TH9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 05:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin