+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   59000 Beiguan (1998 SW26) Classification: Main-belt Asteroid          SPK-ID: 2059000 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1199718115279771 3.5825e-08   a 2.206739099872333 9.3045e-09 au q 1.941992612491032 7.7729e-08 au i 4.789963950835545 5.1073e-06 deg node 359.5618227195353 4.1787e-05 deg peri 96.84935880305514 4.8588e-05 deg M 150.943560851357 2.3896e-05 deg tp 2458498.461524324572 (2019-Jan-14.96152432) 7.8638e-05 TDB period 1197.360458596398 3.28 7.5728e-06 2.073e-08 d yr n .3006613400462621 1.9016e-09 deg/d Q 2.471485587253635 1.0421e-08 au   Orbit Determination Parameters    # obs. used (total)      705      data-arc span      7474 days (20.46 yr)      first obs. used      1998-09-17      last obs. used      2019-03-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55757      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 03:37:08   Additional Information  Earth MOID = .965656 au   Jupiter MOID = 2.66423 au   T_jup = 3.646  [ 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 16.4   n/a MPO412562   diameter diameter 2.851 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.034   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   59000 Beiguan           Discovered 1998 Sept. 17 by the Beijing Schmidt CCD Asteroid Program at Xinglong. Beijing Planetarium (Beijing Tianwenguan) was the first planetarium in China, and it is now one of the most modern planetaria in the world. This minor planet is named during the fiftieth anniversary year of Beijing Planetarium. 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  1998 SW26 = 2001 RL52  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-03 18:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin