+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12491 Musschenbroek (1997 JE15) Classification: Main-belt Asteroid          SPK-ID: 2012491 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04717758847042863 4.0352e-08   a 2.898966893614856 1.2554e-08 au q 2.762200626518498 1.1674e-07 au i 2.805676008260785 4.6492e-06 deg node 144.7805517304151 7.5605e-05 deg peri 175.4560208283847 8.6833e-05 deg M 236.997565803736 4.4011e-05 deg tp 2460012.491211196065 (2023-Mar-08.99121120) 0.00022139 TDB period 1802.865426847941 4.94 1.1711e-05 3.206e-08 d yr n .1996821252651174 1.297e-09 deg/d Q 3.035733160711215 1.3146e-08 au   Orbit Determination Parameters    # obs. used (total)      2246      data-arc span      11459 days (31.37 yr)      first obs. used      1990-01-29      last obs. used      2021-06-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49145      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 03:01:05   Additional Information  Earth MOID = 1.74846 au   Jupiter MOID = 2.10953 au   T_jup = 3.284  [ 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 13.21   n/a MPCxxxxx   diameter diameter 7.106 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.201   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   12491 Musschenbroek           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory. Petrus van Musschenbroek (1692-1761) was a Dutch experimental scientist who will be always remembered for his invention of the Leiden jar, a capacitor capable of collecting electrostatic electricity. In 1792 he published his treatise on experimental physics, Physicae experimentales. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040928/MPCPages.arc Last Updated: 2004-09-28 Alternate Designations  1997 JE15 = 1990 BJ5 = 1996 CM2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-04 01:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin