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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784771773375602 4.0107e-08  
a 3.16903860110886 2.1805e-08 au
q 2.603437536709181 1.3225e-07 au
i 11.15458576276398 5.1087e-06 deg
node 52.49921572457633 2.2505e-05 deg
peri 215.8005586094797 2.6552e-05 deg
M 1.534873758244576 1.5202e-05 deg
tp 2459387.714633555537
(2021-Jun-22.21463356)
8.6986e-05 TDB
period 2060.581140968789
5.64
2.1267e-05
5.823e-08
d
yr
n .1747079951584653 1.8032e-09 deg/d
Q 3.73463966550854 2.5697e-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 = 1.59737 au 
 Jupiter MOID = 1.39224 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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