+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .117128288415432 4.6284e-08   a 3.118434983511501 2.1736e-08 au q 2.753178031357993 1.4301e-07 au i 14.21480751059723 5.1747e-06 deg node 178.0431227580304 1.7921e-05 deg peri 40.70313250993389 2.6882e-05 deg M 323.3594129903417 1.9833e-05 deg tp 2459405.221469200934 (2021-Jul-09.72146920) 0.00011136 TDB period 2011.423258391281 5.51 2.103e-05 5.758e-08 d yr n .1789777454835264 1.8713e-09 deg/d Q 3.483691935665008 2.4282e-08 au   Orbit Determination Parameters    # obs. used (total)      746      data-arc span      8038 days (22.01 yr)      first obs. used      1999-03-13      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56992      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:38:14   Additional Information  Earth MOID = 1.76387 au   Jupiter MOID = 1.52147 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 14.75   n/a E2021B55   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 ] 2021-Apr-21 12:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin