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19482 Harperlee (1998 HL102)
Classification: Main-belt Asteroid          SPK-ID: 2019482
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1783185574404577 4.0093e-08  
a 3.168552715057781 2.2124e-08 au
q 2.603540965734632 1.3229e-07 au
i 11.15512472092152 5.1089e-06 deg
node 52.50075612598764 2.2504e-05 deg
peri 215.7671805251719 2.6554e-05 deg
M 327.3053555446385 1.5094e-05 deg
tp 2459387.595762042903
(2021-Jun-22.09576204)
8.7002e-05 TDB
period 2060.107257853964
5.64
2.1577e-05
5.907e-08
d
yr
n .1747481829538409 1.8302e-09 deg/d
Q 3.733564464380931 2.6069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1243  
   data-arc span      14299 days (39.15 yr)  
   first obs. used      1981-04-11  
   last obs. used      2020-06-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51799  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:54:54  

Additional Information
 Earth MOID = 1.59575 au 
 Jupiter MOID = 1.39421 au 
 T_jup = 3.149 
[ 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 13.72   n/a E2021B10  
diameter diameter 12.788 km 0.087 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19482 Harperlee           Discovered 1998 Apr. 25 by E. W. Elst at the European Southern Observatory.
Harper Lee (1926-2016) was an American novelist widely known for her 1960 novel To Kill a Mockingbird. The novel was inspired by the racist attitudes she observed as a child in a town in Alabama.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-04-22Last Updated: 2016-04-25

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Alternate Designations
 1998 HL102 = 1981 GQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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