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5382 McKay (1991 JR2)
Classification: Main-belt Asteroid          SPK-ID: 2005382
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09308878109517325 5.0919e-08  
a 2.628398832063975 1.1029e-08 au
q 2.383724388555162 1.3815e-07 au
i 12.79077035746291 4.424e-06 deg
node 169.0636703209309 1.5439e-05 deg
peri 10.97929561346079 2.4667e-05 deg
M 338.4974812802572 1.8994e-05 deg
tp 2459093.465574796894
(2020-Aug-31.96557480)
8.2204e-05 TDB
period 1556.45054251961
4.26
9.7969e-06
2.682e-08
d
yr
n .231295495851237 1.4559e-09 deg/d
Q 2.873073275572787 1.2056e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2349  
   data-arc span      17776 days (48.67 yr)  
   first obs. used      1971-10-13  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:19:39  

Additional Information
 Earth MOID = 1.38902 au 
 Jupiter MOID = 2.08847 au 
 T_jup = 3.360 
[ 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 12.6   n/a MPO502205  
diameter diameter 10.281 km 0.819 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 21.486 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.]
geometric albedo albedo 0.183   0.053 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2013-Jul-14 08:58 < 00:01 Juno 0.0144966258138755 0.0144953961922842 0.0144978554425983 5.93234855522146 5.93234841375535 2456487.873482873 0.217355144182081 73.8756404921261 56.472221849472 59.9939970989978 36333.5041123645 T 34 CATAB v2.0f-lin.ifort 2020-Jun-23 16:19:50 2020-Jun-23 16:19

Alternate Designations
 1991 JR2 = 1952 DK1 = 1971 TK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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