+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10361 Bunsen (1994 PR20) Classification: Main-belt Asteroid          SPK-ID: 2010361 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1225093846085725 2.7412e-08   a 2.291773778617953 7.2633e-09 au q 2.011009983337405 6.2293e-08 au i 3.637788797345839 3.4077e-06 deg node 143.412306807961 5.1761e-05 deg peri 286.6775664448984 5.4054e-05 deg M 131.7623053396808 1.4946e-05 deg tp 2458736.685063859238 (2019-Sep-10.18506386) 5.2519e-05 TDB period 1267.231751753432 3.47 6.0244e-06 1.649e-08 d yr n .2840837909102881 1.3505e-09 deg/d Q 2.572537573898502 8.1532e-09 au   Orbit Determination Parameters    # obs. used (total)      1766      data-arc span      9681 days (26.51 yr)      first obs. used      1994-08-12      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47909      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:02:42   Additional Information  Earth MOID = 1.02845 au   Jupiter MOID = 2.66821 au   T_jup = 3.585  [ 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 14.67   n/a E2021B10   diameter diameter 2.439 km 0.447 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.297   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   10361 Bunsen           Robert Wilhelm Bunsen (1811-1899) was a German chemist who discovered the alkali-group metals cesium and rubidium. He also found an antidote to arsenic poisoning (1834) and invented the carbon-zinc electric cell (1841). He is best remembered by every chemistry student for the development of the Bunsen burner. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000320/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1994 PR20 = 1996 DS  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 18:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin