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12695 Utrecht (1989 GR3)
Classification: Main-belt Asteroid          SPK-ID: 2012695
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2524868267412117 4.3463e-08  
a 2.56720795896035 1.0133e-08 au
q 1.919021767817669 1.1563e-07 au
i 3.910929393449478 4.8849e-06 deg
node 256.6837219971339 4.9807e-05 deg
peri 14.27865687446829 5.0476e-05 deg
M 150.9102068933622 9.237e-06 deg
tp 2458370.694982292794
(2018-Sep-09.19498229)
3.6242e-05 TDB
period 1502.415317307255
4.11
8.8955e-06
2.435e-08
d
yr
n .2396141704979551 1.4187e-09 deg/d
Q 3.215394150103032 1.2692e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1607  
   data-arc span      24742 days (67.74 yr)  
   first obs. used      1952-05-01  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51388  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:25:51  

Additional Information
 Earth MOID = .903141 au 
 Jupiter MOID = 1.90138 au 
 T_jup = 3.383 
[ 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 14.3   n/a MPO502265  
diameter diameter 3.795 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.338   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

12695 Utrecht           Discovered 1989 Apr. 1 by E. W. Elst at the European Southern Observatory.
Utrecht is a city in the Netherlands renowned for its university and the Sonnenborgh Observatory. In 1945, the famous Flemish astronomer Marcel Minnaert introduced the discipline of solar spectroscopy there. In 2004 the city celebrates its 750th anniversary.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

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Alternate Designations
 1989 GR3 = 1952 JA = 1990 TO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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