+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101960 Molau (1999 RR38) Classification: Main-belt Asteroid          SPK-ID: 2101960 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2246237819696956 4.8438e-08   a 2.308114265921985 5.3847e-09 au q 1.789656910292381 1.122e-07 au i .3747586530636914 5.6577e-06 deg node 172.0437938231902 0.00040036 deg peri 150.754553337048 0.0004006 deg M 42.48787356605735 1.0213e-05 deg tp 2459049.336520476477 (2020-Jul-18.83652048) 3.641e-05 TDB period 1280.809041757797 3.51 4.4821e-06 1.227e-08 d yr n .2810723443253741 9.8359e-10 deg/d Q 2.826571621551589 6.5943e-09 au   Orbit Determination Parameters    # obs. used (total)      623      data-arc span      10339 days (28.31 yr)      first obs. used      1992-08-25      last obs. used      2020-12-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52564      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:39:38   Additional Information  Earth MOID = .775304 au   Jupiter MOID = 2.50152 au   T_jup = 3.552  [ 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 17.12   n/a E2021B55   101960 Molau           Discovered 1999 Sept. 11 by A. Knöfel at Drebach. Sirko Molau (b. 1971) is a software programmer who developed software for the real-time detection of meteors on a video stream. He organized a video meteor network in the International Meteor Organization. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20120207/MPCPages.arc Last Updated: 2012-02-09 [ show close-approach data ] Alternate Designations  1999 RR38 = 1992 SN17  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 20:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin