+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20379 Christijohns (1998 KS47) Classification: Main-belt Asteroid          SPK-ID: 2020379 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07457499218006276 4.0063e-08   a 2.657028834881753 1.2262e-08 au q 2.458880930298245 1.0737e-07 au i 4.530998143251511 4.0099e-06 deg node 147.6988588431888 5.2297e-05 deg peri 28.97667219900496 5.8261e-05 deg M 143.0565457880499 2.5332e-05 deg tp 2458571.865717026828 (2019-Mar-29.36571703) 0.00011091 TDB period 1581.950274443481 4.33 1.0951e-05 2.998e-08 d yr n .2275672034803024 1.5753e-09 deg/d Q 2.855176739465261 1.3177e-08 au   Orbit Determination Parameters    # obs. used (total)      1380      data-arc span      14785 days (40.48 yr)      first obs. used      1980-02-19      last obs. used      2020-08-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50594      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:19:01   Additional Information  Earth MOID = 1.46393 au   Jupiter MOID = 2.10501 au   T_jup = 3.379  [ 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 14.5   n/a MPO337430   diameter diameter 7.023 km 0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.050   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20379 Christijohns           Discovered 1998 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Christine Elizabeth Johns (b. 1990) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her botany and zoology project. She attends the Providence Christian School, Cape Coral, Florida. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20041028/MPCPages.arc Last Updated: 2004-10-29 Alternate Designations  1998 KS47 = 1980 DB = 1993 FC4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 12:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin