+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   23861 Benjaminsong (1998 RM58) Classification: Main-belt Asteroid          SPK-ID: 2023861 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01000708902951442 4.1107e-08   a 2.86981946757691 1.4508e-08 au q 2.841100928666235 1.1895e-07 au i 1.66122444393615 4.3862e-06 deg node 349.8487610054306 0.00012146 deg peri 320.9590645709638 0.00021144 deg M 214.2397220563887 0.00017435 deg tp 2459719.480281696664 (2022-May-19.98028170) 0.00086057 TDB period 1775.74374213893 4.86 1.3466e-05 3.687e-08 d yr n .2027319547618794 1.5374e-09 deg/d Q 2.898538006487586 1.4654e-08 au   Orbit Determination Parameters    # obs. used (total)      1534      data-arc span      9788 days (26.80 yr)      first obs. used      1993-08-20      last obs. used      2020-06-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49774      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:43:25   Additional Information  Earth MOID = 1.8264 au   Jupiter MOID = 2.10162 au   T_jup = 3.298  [ 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 14.4   n/a MPO492997   diameter diameter 3.742 km 1.385 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.264   0.144 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   23861 Benjaminsong           Discovered 1998 Sept. 14 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Benjamin Paul Song (b. 1993) is a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochem, medicine, health, and microbiology project. He attends the Arcola Intermediate School, Norristown, Pennsylvania. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20071026/MPCPages.arc Last Updated: 2007-10-28 Alternate Designations  1998 RM58 = 1993 QO7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-21 06:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin