+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1921328588699548 3.8673e-08   a 2.183083525552707 4.6784e-09 au q 1.763641446636365 8.43e-08 au i 2.559603761514293 4.1138e-06 deg node 186.0637834167362 6.3055e-05 deg peri 157.8881213319401 6.3516e-05 deg M 194.3746323208206 7.5992e-06 deg tp 2459542.536222431933 (2021-Nov-24.03622243) 2.5291e-05 TDB period 1178.159135945125 3.23 3.7873e-06 1.037e-08 d yr n .305561438193327 9.8225e-10 deg/d Q 2.602525604469049 5.5773e-09 au   Orbit Determination Parameters    # obs. used (total)      2246      data-arc span      32381 days (88.65 yr)      first obs. used      1931-10-17      last obs. used      2020-06-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47994      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:13:21   Additional Information  Earth MOID = .756359 au   Jupiter MOID = 2.80384 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 14.3   n/a MPO347534   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-Jan-22 07:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin