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JPL Small-Body Database Browser
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19574 Davidedwards (1999 LQ21)
Classification: Main-belt Asteroid          SPK-ID: 2019574
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1892461102893113 3.4412e-08  
a 2.249494908730381 7.5637e-09 au
q 1.823786747137547 7.9251e-08 au
i 3.305847629559222 3.5971e-06 deg
node 91.35139345561525 6.4713e-05 deg
peri 247.4060589916447 6.5564e-05 deg
M 16.32243897770897 1.391e-05 deg
tp 2458944.626162344319
(2020-Apr-05.12616234)
4.7437e-05 TDB
period 1232.326956989404
3.37
6.2154e-06
1.702e-08
d
yr
n .2921302645845598 1.4734e-09 deg/d
Q 2.675203070323215 8.9952e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1597  
   data-arc span      13609 days (37.26 yr)  
   first obs. used      1982-05-15  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:51:08  

Additional Information
 Earth MOID = .817848 au 
 Jupiter MOID = 2.70859 au 
 T_jup = 3.602 
[ 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 14.9   n/a MPO474023  
rotation period rot_per 37.635 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

19574 Davidedwards           Discovered 1999 June 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
David Kitzmiller Edwards V (b. 1988) is a finalist in the 2003 Discovery Channel Young Scientist Challenge, a middle school science competition, for his environmental sciences project. He attends the Emily Gray Junior High School, Tucson, Arizona.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20031010/MPCPages.arcLast Updated: 2003-10-10

[ show close-approach data ]
Alternate Designations
 1999 LQ21 = 1982 JG3 = 1992 HK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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