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5007 Keay (1990 UH2)
Classification: Main-belt Asteroid          SPK-ID: 2005007
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .189097204585146 2.8321e-08  
a 2.677914970105007 1.1315e-08 au
q 2.171528735141436 7.9222e-08 au
i 13.35913639562561 5.1555e-07 deg
node 168.9796505125888 2.9872e-06 deg
peri 161.4171354951654 6.2959e-06 deg
M 4.149300043352492 3.3281e-06 deg
tp 2459182.051292670302
(2020-Nov-28.55129267)
1.4759e-05 TDB
period 1600.639763164799
4.38
1.0144e-05
2.777e-08
d
yr
n .2249100692639328 1.4254e-09 deg/d
Q 3.184301205068579 1.3454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1980  
   data-arc span      16784 days (45.95 yr)  
   first obs. used      1975-01-23  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4867  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:01:56  

Additional Information
 Earth MOID = 1.16388 au 
 Jupiter MOID = 2.23705 au 
 T_jup = 3.314 
[ 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 13.11   n/a E2021B10  
diameter diameter 7.308 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.251   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5007 Keay (1990 UH2)          Discovered 1990-Oct-20 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 UH2 = 1981 TT2 = 1989 KH 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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