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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893830149844235 4.3377e-08  
a 2.678517910445925 1.2026e-08 au
q 2.171252112875897 1.1913e-07 au
i 13.35473452485157 5.2074e-06 deg
node 169.0010632104695 1.6593e-05 deg
peri 161.4741236812467 2.0209e-05 deg
M 319.1319092499697 1.1926e-05 deg
tp 2459182.269958165395
(2020-Nov-28.76995817)
5.3402e-05 TDB
period 1601.180376636351
4.38
1.0783e-05
2.952e-08
d
yr
n .2248341319022802 1.5142e-09 deg/d
Q 3.185783708015953 1.4303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1771  
   data-arc span      16629 days (45.53 yr)  
   first obs. used      1975-01-23  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50324  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:22:40  

Additional Information
 Earth MOID = 1.16547 au 
 Jupiter MOID = 2.23528 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 13.1   n/a MPO337295  
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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