+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   8818 Hermannbondi (1985 RW2) Classification: Main-belt Asteroid          SPK-ID: 2008818 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08099280675472072 4.7519e-08   a 2.785912021643423 1.2175e-08 au q 2.560273187638804 1.3028e-07 au i 1.775553098548672 3.6031e-06 deg node 96.1628923706896 0.00014215 deg peri 250.2036380976795 0.000144 deg M 159.7249993609944 2.4319e-05 deg tp 2458246.936391217711 (2018-May-08.43639122) 0.00011415 TDB period 1698.437315679669 4.65 1.1133e-05 3.048e-08 d yr n .2119595446217205 1.3894e-09 deg/d Q 3.011550855648042 1.3161e-08 au   Orbit Determination Parameters    # obs. used (total)      1939      data-arc span      12649 days (34.63 yr)      first obs. used      1985-09-05      last obs. used      2020-04-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49965      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:03:29   Additional Information  Earth MOID = 1.55365 au   Jupiter MOID = 2.31397 au   T_jup = 3.326  [ hide covariance matrix ] Orbital Elements at Epoch 2456699.5 (2014-Feb-11.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08013285336684864 4.7218e-08   q 2.561772316347953 1.2923e-07 au tp 2456536.774222839808 (2013-Sep-01.27422284) 0.00011578 TDB node 96.2212334105111 0.00014194 deg peri 247.8970895892554 0.00014387 deg i 1.776377545530211 3.6075e-06 deg   Orbit Determination Parameters    # obs. used (total)      1939      data-arc span      12649 days (34.63 yr)      first obs. used      1985-09-05      last obs. used      2020-04-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49965      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:03:29   Additional Information  Jupiter MOID = 2.31397 au   T_jup = 3.326  Orbit Covariance (6×6)   e q tp node peri i e 2.229563573677257E-15 -6.08076554340069E-15 1.557575684010854E-12 -1.164935114589289E-14 2.644331616646395E-13 -1.956422611590586E-16 q -6.08076554340069E-15 1.670087638971734E-14 -4.277637309307849E-12 3.144628085363051E-14 -7.247027756965144E-13 5.728836056357118E-16 tp 1.557575684010854E-12 -4.277637309307849E-12 1.340435971496112E-8 -1.00734178616418E-11 2.74582633657994E-9 -8.406440271982725E-13 node -1.164935114589289E-14 3.144628085363051E-14 -1.00734178616418E-11 2.014690386347732E-8 -2.013868471359716E-8 2.715378001610474E-11 peri 2.644331616646395E-13 -7.247027756965144E-13 2.74582633657994E-9 -2.013868471359716E-8 2.069891505145518E-8 -2.730668839635591E-11 i -1.956422611590586E-16 5.728836056357118E-16 -8.406440271982725E-13 2.715378001610474E-11 -2.730668839635591E-11 1.301375108455579E-11 [ 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 13.9   n/a MPO452294   diameter diameter 9.448 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.062   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   8818 Hermannbondi           Discovered 1985 Sept. 5 by H. Debehogne at the European Southern Observatory. British cosmologist Hermann Bondi (1919-2005), known for work on the steady-state theory of the universe, had an impressive career that encompassed mathematics, radar technology, energy, defence, ecology and humanism. As director general of the European Space Research Organization he was a leader in space research. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070730/MPCPages.arc Last Updated: 2007-08-07 [ show close-approach data ] Alternate Designations  1985 RW2 = 1990 SV26 = 1996 AD8  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-29 15:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin