+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19290 Schroeder (1996 JR1) Classification: Main-belt Asteroid          SPK-ID: 2019290 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2283292799594407 1.4929e-08   a 2.285239467513693 9.6485e-09 au q 1.763452385361395 3.553e-08 au i 23.28820169550692 5.3208e-07 deg node 67.49452442840153 1.0511e-06 deg peri 251.9047908722317 3.9951e-06 deg M 35.14037861420512 6.8483e-06 deg tp 2459273.331419433417 (2021-Feb-27.83141943) 2.3411e-05 TDB period 1261.815915268638 3.45 7.9913e-06 2.188e-08 d yr n .285303106137599 1.8069e-09 deg/d Q 2.80702654966599 1.1852e-08 au   Orbit Determination Parameters    # obs. used (total)      1703      data-arc span      11393 days (31.19 yr)      first obs. used      1989-06-04      last obs. used      2020-08-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47673      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 18:09:00   Additional Information  Earth MOID = .870274 au   Jupiter MOID = 2.64416 au   T_jup = 3.462  [ 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 14.20   n/a E2021B10   diameter diameter 3.650 km 0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.230   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19290 Schroeder           Discovered 1996 May 15 by JPL/GEODSS NEAT at Haleakala. Jeff Schroeder (b. 1954) has contributed to the mechanical design and fabrication of all the NEAT cameras, starting with the 1995 NEAT/GEODSS camera, continuing with the 2000 NEAT/MSSS camera and concluding with the 2001 NEAT/Oschin camera. He has worked at the Jet Propulsion Laboratory at JPL for 22 years. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010509/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1996 JR1 = 1989 LK  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-25 00:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin