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5382 McKay (1991 JR2)
Classification: Main-belt Asteroid          SPK-ID: 2005382
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09416463799832353 6.518e-08  
a 2.628787014765993 1.6753e-08 au
q 2.38124823714586 1.7254e-07 au
i 12.79245676810414 6.8576e-06 deg
node 169.0864016575344 2.4236e-05 deg
peri 11.3216476052882 3.6637e-05 deg
M 328.1103542322966 2.8308e-05 deg
tp 2457538.404590330799
(2016-May-29.90459033)
0.00012267 JED
period 1556.795358616591
4.26
1.4882e-05
4.074e-08
d
yr
n .2312442659900434 2.2106e-09 deg/d
Q 2.876325792386127 1.8331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1197  
   data-arc span      16135 days (44.18 yr)  
   first obs. used      1971-10-14  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49795  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:56:08  

Additional Information
 Earth MOID = 1.38654 au 
 Jupiter MOID = 2.08837 au 
 T_jup = 3.359 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO302097  
rotation period rot_per 21.4862 h n/a LCDB (Rev. 2015-December); 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.]

5382 McKay           Discovered 1991 May 8 by R. H. McNaught at Siding Spring.
Named for Christopher P. McKay (b. 1954), space scientist and exobiologist at NASA-Ames Research Center. McKay has made numerous seminal contributions to planetary science and the search for zones of life in the solar system, with a special interest in Mars, Titan, comets and microbial life in hostile environments on the earth. Name suggested and citation prepared by D. I. Steel.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19980411/MPCPages.arcLast Updated: 2009-11-17

[ show close-approach data ]
Alternate Designations
 1991 JR2 = 1952 DK1 = 1971 TK2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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