+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14969 Willacather (1997 QC1) Classification: Main-belt Asteroid          SPK-ID: 2014969 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1412356527812041 3.1971e-08   a 2.286584882398835 7.5315e-09 au q 1.963637573893603 7.3765e-08 au i 3.415033347338073 4.1694e-06 deg node 169.5748593627131 5.5414e-05 deg peri 120.7082475740981 5.8756e-05 deg M 246.5525914164596 2.3397e-05 deg tp 2459398.489393209831 (2021-Jul-02.98939321) 8.3103e-05 TDB period 1262.93040400331 3.46 6.2397e-06 1.708e-08 d yr n .2850513368423558 1.4083e-09 deg/d Q 2.609532190904067 8.5952e-09 au   Orbit Determination Parameters    # obs. used (total)      1707      data-arc span      25724 days (70.43 yr)      first obs. used      1949-11-21      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49811      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:06:21   Additional Information  Earth MOID = .950127 au   Jupiter MOID = 2.54901 au   T_jup = 3.586  [ 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 14.7   n/a MPO467852   diameter diameter 3.263 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.199   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   14969 Willacather           Discovered 1997 Aug. 28 by R. Linderholm at Lime Creek. Born in Virginia, the novelist and Pulitzer Prize-winner Willa Cather (1873-1947) moved to Nebraska in 1883. Her early life on the prairie and sympathy for the immigrant pioneer influenced her mature years and shows in her best-known novels, My Antonia and Death Comes for the Archbishop. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20001013/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1997 QC1 = 1986 HT  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-09 02:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin