+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2018 Schuster (1931 UC) Classification: Main-belt Asteroid          SPK-ID: 2002018 [ 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 .192279500223026 3.8647e-08   a 2.182822545195067 4.6614e-09 au q 1.763110517129406 8.425e-08 au i 2.559858769186632 4.1129e-06 deg node 186.0638081291959 6.3037e-05 deg peri 157.9026318135889 6.3497e-05 deg M 255.4835759918545 7.6357e-06 deg tp 2459542.485832050853 (2021-Nov-23.98583205) 2.5265e-05 TDB period 1177.947874763799 3.23 3.7732e-06 1.033e-08 d yr n .3056162396593201 9.7896e-10 deg/d Q 2.602534573260728 5.5577e-09 au   Orbit Determination Parameters    # obs. used (total)      2255      data-arc span      32601 days (89.26 yr)      first obs. used      1931-10-17      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47903      source      ORB      producer      Otto Matic      solution date      2021-Feb-23 18:22:36   Additional Information  Earth MOID = .754014 au   Jupiter MOID = 2.80425 au   T_jup = 3.654  [ 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 14.33   n/a E2021B10   diameter diameter 4.034 km 0.392 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.249   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2018 Schuster (1931 UC)          Discovered 1931-Oct-17 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1931 UC = 1973 UC1 = 2526 P-L  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 20:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin