+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21050 Beck (1990 TG2) Classification: Main-belt Asteroid          SPK-ID: 2021050 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1922175938128979 4.202e-08   a 2.746463461794299 1.3503e-08 au q 2.218544863673157 1.1563e-07 au i 12.87578040031786 5.367e-06 deg node 9.388054809314003 1.6103e-05 deg peri 27.65084676770194 1.9853e-05 deg M 212.8172735111287 1.365e-05 deg tp 2459880.194112915812 (2022-Oct-27.69411292) 6.6058e-05 TDB period 1662.490473487688 4.55 1.226e-05 3.357e-08 d yr n .2165425942229714 1.5969e-09 deg/d Q 3.27438205991544 1.6098e-08 au   Orbit Determination Parameters    # obs. used (total)      1061      data-arc span      12188 days (33.37 yr)      first obs. used      1987-01-03      last obs. used      2020-05-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52845      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:59:12   Additional Information  Earth MOID = 1.23121 au   Jupiter MOID = 2.22373 au   T_jup = 3.285  [ 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 14.60   n/a E2021B10   diameter diameter 3.496 km 0.547 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.229   0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21050 Beck           Discovered 1990 Oct. 10 by L. D. Schmadel and F. Börngen at Tautenburg. Hans G. Beck (b. 1930) studied astronomy and served for decades as head of the department for astronomical instruments of Carl Zeiss, Jena. This minor planet is being named on the occasion of his 75th birthday. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050407/MPCPages.arc Last Updated: 2005-04-15 Alternate Designations  1990 TG2 = 1999 RS90  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 20:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin