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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1412356521153002 3.2067e-08  
a 2.286584882148722 7.5832e-09 au
q 1.96363757520146 7.3928e-08 au
i 3.415033246764155 4.2237e-06 deg
node 169.5748571798064 5.77e-05 deg
peri 120.7082505166983 6.0983e-05 deg
M 246.5525908736801 2.3534e-05 deg
tp 2459398.489395048678
(2021-Jul-02.98939505)
8.3554e-05 TDB
period 1262.930403796095
3.46
6.2826e-06
1.72e-08
d
yr
n .2850513368891255 1.418e-09 deg/d
Q 2.609532189095983 8.6542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      25643 days (70.21 yr)  
   first obs. used      1949-11-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50492  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:08:18  

Additional Information
 Earth MOID = .950127 au 
 Jupiter MOID = 2.54901 au 
 T_jup = 3.586 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456755.5 (2014-Apr-08.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418221584690608 3.2089e-08  
q 1.962295327900526 7.4032e-08 au
tp 2456872.458480373553
(2014-Aug-02.95848037)
7.7624e-05 TDB
node 169.6003246241614 5.77e-05 deg
peri 120.7200387638544 6.096e-05 deg
i 3.414466564787838 4.2247e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      25643 days (70.21 yr)  
   first obs. used      1949-11-21  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50492  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:08:18  

Additional Information
 Jupiter MOID = 2.54901 au 
 T_jup = 3.586 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.029719904189531E-15 -2.366601323051746E-15 4.789954232682107E-13 7.833426937293587E-15 1.196851241308901E-13 9.119376668793418E-16
q -2.366601323051746E-15 5.480700139453738E-15 -9.072077093072125E-13 -1.715653031351739E-14 -2.27595319988767E-13 -2.025461002894124E-15
tp 4.789954232682107E-13 -9.072077093072125E-13 6.025527706328316E-9 2.072329935260449E-11 1.537507242780794E-9 6.39991592308945E-13
node 7.833426937293587E-15 -1.715653031351739E-14 2.072329935260449E-11 3.329271060112911E-9 -3.317430004042193E-9 3.257233599551144E-12
peri 1.196851241308901E-13 -2.27595319988767E-13 1.537507242780794E-9 -3.317430004042193E-9 3.716159844565519E-9 -3.081413349039346E-12
i 9.119376668793418E-16 -2.025461002894124E-15 6.39991592308945E-13 3.257233599551144E-12 -3.081413349039346E-12 1.78483556707107E-11

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.arcLast Updated: 2013-03-29

Alternate Designations
 1997 QC1 = 1986 HT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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