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21364 Lingpan (1997 HS12)
Classification: Main-belt Asteroid          SPK-ID: 2021364
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1400921013245831 3.556e-08  
a 2.696929100349026 1.0174e-08 au
q 2.319110635557714 9.4709e-08 au
i 1.171098244989448 3.3177e-06 deg
node 235.2874303187921 0.00019436 deg
peri 315.4782482278086 0.00019473 deg
M 143.5088392753243 1.2279e-05 deg
tp 2458555.620053612497
(2019-Mar-13.12005361)
5.4454e-05 TDB
period 1617.717639358117
4.43
9.1539e-06
2.506e-08
d
yr
n .222535744954133 1.2592e-09 deg/d
Q 3.074747565140339 1.1599e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1334  
   data-arc span      8647 days (23.67 yr)  
   first obs. used      1997-04-06  
   last obs. used      2020-12-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52435  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:52:12  

Additional Information
 Earth MOID = 1.31875 au 
 Jupiter MOID = 1.88449 au 
 T_jup = 3.355 
[ 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 14.7   n/a MPO296307  
diameter diameter 7.103 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21364 Lingpan           Discovered 1997 Apr. 30 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Ling Pan (b. 1986) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for her biochemistry project. She attends the Brearley School, New York, New York.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1997 HS12 = 1999 VC20 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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