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187393 (2005 UL494)
Classification: Main-belt Asteroid          SPK-ID: 2187393
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2323056353884635 3.3061e-08  
a 2.597406823320109 1.9402e-08 au
q 1.9940145808664 8.6698e-08 au
i 12.57513982347212 6.2824e-06 deg
node 200.7982368571774 1.8756e-05 deg
peri 68.56387246976669 2.7198e-05 deg
M 340.8393636165939 2.3265e-05 deg
tp 2459281.879650610386
(2021-Mar-08.37965061)
9.9528e-05 TDB
period 1529.003193500978
4.19
1.7132e-05
4.69e-08
d
yr
n .2354475134716387 2.6381e-09 deg/d
Q 3.200799065773817 2.3909e-08 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      2000-07-10  
   last obs. used      2020-04-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:13  

Additional Information
 Earth MOID = 1.01708 au 
 Jupiter MOID = 1.99988 au 
 T_jup = 3.345 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2323089072613004 3.3085e-08  
q 1.995460266803163 8.7e-08 au
tp 2457750.909311341951
(2016-Dec-28.40931134)
8.6473e-05 TDB
node 200.831759560949 1.8763e-05 deg
peri 68.24266049806151 2.7178e-05 deg
i 12.56986216359248 6.2808e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      7227 days (19.79 yr)  
   first obs. used      2000-07-10  
   last obs. used      2020-04-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:13  

Additional Information
 Jupiter MOID = 1.99988 au 
 T_jup = 3.345 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.094636382757899E-15 -2.833707359847672E-15 -3.718965286911789E-13 1.746342304769563E-15 -6.084817837018392E-14 5.422264774926731E-16
q -2.833707359847672E-15 7.568985421909634E-15 1.91817646819553E-12 -5.338496016649652E-15 3.627440537779696E-13 6.181453393460488E-16
tp -3.718965286911789E-13 1.91817646819553E-12 7.477661413460879E-9 -1.123886396509464E-11 1.710346444567955E-9 1.927688625154899E-11
node 1.746342304769563E-15 -5.338496016649652E-15 -1.123886396509464E-11 3.520476122611312E-10 -3.45600431889688E-10 -3.920377411094752E-11
peri -6.084817837018392E-14 3.627440537779696E-13 1.710346444567955E-9 -3.45600431889688E-10 7.386310812196618E-10 4.264601190856132E-11
i 5.422264774926731E-16 6.181453393460488E-16 1.927688625154899E-11 -3.920377411094752E-11 4.264601190856132E-11 3.944895057833508E-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 15.46   n/a E2021B55  
diameter diameter 5.672 km 0.209 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187393 (2005 UL494)          Discovered 2005-Oct-25 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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