+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19550 Samabates (1999 JP61) Classification: Main-belt Asteroid          SPK-ID: 2019550 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1784994548860009 2.5695e-08   a 2.285280816746253 5.4324e-09 au q 1.877359436695612 5.8176e-08 au i 3.428924680940521 2.6239e-06 deg node 210.706896371042 5.2482e-05 deg peri 59.90896692666874 5.3301e-05 deg M 12.53641372703787 8.6776e-06 deg tp 2458956.558123060750 (2020-Apr-17.05812306) 3.0439e-05 TDB period 1261.850162460116 3.45 4.4993e-06 1.232e-08 d yr n .2852953628805978 1.0173e-09 deg/d Q 2.693202196796895 6.4021e-09 au   Orbit Determination Parameters    # obs. used (total)      2293      data-arc span      13967 days (38.24 yr)      first obs. used      1982-08-12      last obs. used      2020-11-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46801      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:11:18   Additional Information  Earth MOID = .864153 au   Jupiter MOID = 2.40446 au   T_jup = 3.579  [ 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 14.6   n/a MPO474023   diameter diameter 2.706 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.318   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19550 Samabates           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Samantha Lee Bates (b. 1990) is a finalist in the 2003 Discovery Channel Young Scientist Challenge, a middle school science competition, for her biochemistry, medicine, health and microbiology project. She attends the Notre Dame Elementary School, Belmont, California. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20031010/MPCPages.arc Last Updated: 2003-10-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 06:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin