+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14413 Geiger (1991 RT3) Classification: Main-belt Asteroid          SPK-ID: 2014413 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1477788274022754 3.1432e-08   a 2.287493240984325 6.1495e-09 au q 1.949450172141031 7.1821e-08 au i 5.01473672698611 3.5134e-06 deg node 224.0637790811696 4.3164e-05 deg peri 177.8847150842613 4.5243e-05 deg M 134.8900762243655 1.382e-05 deg tp 2458727.004718577067 (2019-Aug-31.50471858) 4.7806e-05 TDB period 1263.683037948093 3.46 5.0958e-06 1.395e-08 d yr n .2848815638014343 1.1488e-09 deg/d Q 2.625536309827619 7.0583e-09 au   Orbit Determination Parameters    # obs. used (total)      1816      data-arc span      15858 days (43.42 yr)      first obs. used      1977-08-14      last obs. used      2021-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48771      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:17:57   Additional Information  Earth MOID = .956943 au   Jupiter MOID = 2.76201 au   T_jup = 3.581  [ 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 14.38   n/a E2021B10   diameter diameter 3.848 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.227   0.054 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14413 Geiger           Discovered 1991 Sept. 5 by F. Borngen and L. D. Schmadel at Tautenburg. German physicist Hans Geiger (1882-1945) studied radioactivity and scattering of \alpha -particles. Together with Erwin Wilhelm Mueller, he invented the GM (Geiger) counter, which became an important measuring instrument in nuclear physics. Together with K. Scheel, he edited the 24-volume Handbuch der Physik (1926-1929). NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000726/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1991 RT3 = 1977 PX1 = 1984 SB3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-02 18:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin