+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7887 Bratfest (1993 SU2) Classification: Main-belt Asteroid          SPK-ID: 2007887 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2458000.5 (2017-Sep-04.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0994275043298349 4.5385e-08   a 2.57887843221681 1.4031e-08 au q 2.322466985731455 1.1377e-07 au i 13.74006530797883 4.8314e-06 deg node 295.0903711999756 2.005e-05 deg peri 102.7903068675189 3.1747e-05 deg M 258.1060725722686 2.5973e-05 deg tp 2458428.644661626604 (2018-Nov-06.14466163) 0.00011033 JED period 1512.671874336143 4.14 1.2345e-05 3.38e-08 d yr n .2379894847704436 1.9422e-09 deg/d Q 2.835289878702165 1.5426e-08 au   Orbit Determination Parameters    # obs. used (total)      1350      data-arc span      15897 days (43.52 yr)      first obs. used      1973-12-25      last obs. used      2017-07-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      fit RMS      .5209      data source      ORB      producer      Otto Matic      solution date      2017-Jul-11 13:06:54   Additional Information  Earth MOID = 1.37641 au   Jupiter MOID = 2.52918 au   T_jup = 3.379  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.2 mag n/a MPO332893   diameter diameter 10.641 km 0.190 EAR_A_COMPIL_5_NEOWISEDIAM_V1_0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.225   0.025 EAR_A_COMPIL_5_NEOWISEDIAM_V1_0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   7887 Bratfest           Discovered 1993 Sept. 18 by C. W. Hergenrother at Catalina Station. Bratfest, which celebrates its 25th anniversary in 2003, is an annual Oktoberfest-style party organized by graduate students of the University of Arizona's Lunar and Planetary Laboratory. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030106/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1993 SU2 = 1973 YQ3 = 1985 VL5  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2017-Sep-14 18:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin