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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893830129963366 4.5167e-08  
a 2.678517909762868 1.2671e-08 au
q 2.171252117647327 1.2297e-07 au
i 13.35473509325704 5.6013e-06 deg
node 169.0010639788068 1.6919e-05 deg
peri 161.4741221865237 2.0934e-05 deg
M 319.1319103113921 1.3368e-05 deg
tp 2459182.269953374951
(2020-Nov-28.76995338)
5.9962e-05 TDB
period 1601.180376023868
4.38
1.1362e-05
3.111e-08
d
yr
n .2248341319882837 1.5954e-09 deg/d
Q 3.18578370187841 1.5071e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1647  
   data-arc span      16420 days (44.96 yr)  
   first obs. used      1975-01-23  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51949  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:27:33  

Additional Information
 Earth MOID = 1.16547 au 
 Jupiter MOID = 2.23528 au 
 T_jup = 3.314 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456542.5 (2013-Sep-07.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870716971853623 4.5297e-08  
q 2.179178946052465 1.2333e-07 au
tp 2455982.473516064201
(2012-Feb-24.97351606)
5.5958e-05 TDB
node 169.0897034607268 1.6943e-05 deg
peri 161.8321916100043 2.1041e-05 deg
i 13.33701914155028 5.5965e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1647  
   data-arc span      16420 days (44.96 yr)  
   first obs. used      1975-01-23  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51949  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:27:33  

Additional Information
 Jupiter MOID = 2.23528 au 
 T_jup = 3.314 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.051821892307651E-15 -5.567046035667133E-15 1.072559456788468E-12 -7.382570044520306E-15 2.655657420688572E-13 1.581932986085167E-15
q -5.567046035667133E-15 1.52112967261998E-14 -2.88010385483297E-12 1.704296254169823E-14 -7.050950577256375E-13 -4.810236135039372E-15
tp 1.072559456788468E-12 -2.88010385483297E-12 3.131294464432267E-9 -1.654856974608985E-11 7.117480027874095E-10 -1.563043687312734E-14
node -7.382570044520306E-15 1.704296254169823E-14 -1.654856974608985E-11 2.870525740259465E-10 -2.825321233831854E-10 2.916208204061598E-11
peri 2.655657420688572E-13 -7.050950577256375E-13 7.117480027874095E-10 -2.825321233831854E-10 4.427265981325646E-10 -2.831865129354171E-11
i 1.581932986085167E-15 -4.810236135039372E-15 -1.563043687312734E-14 2.916208204061598E-11 -2.831865129354171E-11 3.132080911172038E-11

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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