+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101721 Emanuelfritsch (1999 EF3) Classification: Main-belt Asteroid          SPK-ID: 2101721 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1172895423572708 4.9453e-08   a 3.119023869250309 2.6151e-08 au q 2.753194987024536 1.4897e-07 au i 14.21312127154321 5.1805e-06 deg node 178.0468977919844 1.933e-05 deg peri 40.64793561430508 2.8476e-05 deg M 287.6308908314725 2.2112e-05 deg tp 2459404.961511296572 (2021-Jul-09.46151130) 0.00012582 TDB period 2011.993041501861 5.51 2.5304e-05 6.928e-08 d yr n .1789270601707829 2.2503e-09 deg/d Q 3.484852751476082 2.9219e-08 au   Orbit Determination Parameters    # obs. used (total)      698      data-arc span      7737 days (21.18 yr)      first obs. used      1999-03-13      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57179      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:58:51   Additional Information  Earth MOID = 1.76476 au   Jupiter MOID = 1.52132 au   T_jup = 3.159  [ 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 14.7   n/a MPO337994   diameter diameter 5.240 km 0.361 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.112   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101721 Emanuelfritsch           Discovered 1999 Mar. 13 by J. Ticha and M. Tichy at Klet. Emanuel Fritsch (1874-1956) was a railway engineer and regional representative of the Czech Tourist Club. He served as a volunteer in building and marking hiking trails in South Bohemia. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20130127/MPCPages.arc Last Updated: 2013-01-31 [ show close-approach data ] Alternate Designations  1999 EF3 = 2001 SX319  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-05 01:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin