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20279 Harel (1998 FZ47)
Classification: Main-belt Asteroid          SPK-ID: 2020279
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08537809535539412 4.8359e-08  
a 2.301120388561879 6.8012e-09 au
q 2.104655112603001 1.0979e-07 au
i 5.574528458258112 4.6483e-06 deg
node 341.204967307207 3.3205e-05 deg
peri 210.2332281130577 3.683e-05 deg
M 175.4033680447355 1.6605e-05 deg
tp 2458579.283667919438
(2019-Apr-05.78366792)
5.8701e-05 TDB
period 1274.991934544637
3.49
5.6526e-06
1.548e-08
d
yr
n .2823547273093722 1.2518e-09 deg/d
Q 2.497585664520757 7.3819e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1958  
   data-arc span      16038 days (43.91 yr)  
   first obs. used      1977-03-12  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46303  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:16:27  

Additional Information
 Earth MOID = 1.10653 au 
 Jupiter MOID = 2.4684 au 
 T_jup = 3.580 
[ 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 14.63   n/a E2021B10  
diameter diameter 3.564 km 0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.380 h n/a LCDB (Rev. 2020-October); 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.]
geometric albedo albedo 0.139   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20279 Harel           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Matan Harel (b. 1986) is a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors, for his physics project. He attends the Stuyvesant High 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: 20040415/MPCPages.arcLast Updated: 2004-04-20

[ show close-approach data ]
Alternate Designations
 1998 FZ47 = 1977 EB5 = 1986 YH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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