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91428 Cortesi (1999 QT1)
Classification: Main-belt Asteroid          SPK-ID: 2091428
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1443754307042858 5.9005e-08  
a 2.630628267407633 2.2846e-08 au
q 2.250830178277787 1.5871e-07 au
i 11.82499713387541 7.9518e-06 deg
node 315.8237932912501 4.3647e-05 deg
peri 131.1502336232694 6.4257e-05 deg
M 226.304564248663 4.3559e-05 deg
tp 2457979.264295093371
(2017-Aug-13.76429509)
0.00019061 JED
period 1558.431258798826
4.27
2.0301e-05
5.558e-08
d
yr
n .2310015266746337 3.0092e-09 deg/d
Q 3.010426356537478 2.6144e-08 au
  Orbit Determination Parameters
   # obs. used (total)      679  
   data-arc span      9626 days (26.35 yr)  
   first obs. used      1988-01-23  
   last obs. used      2014-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52465  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 18:08:31  

Additional Information
 Earth MOID = 1.28565 au 
 Jupiter MOID = 2.2013 au 
 T_jup = 3.355 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO257421  

91428 Cortesi           Discovered 1999 Aug. 20 by S. Sposetti at Gnosca.
Sergio Cortesi (b. 1932) has been the director of the Specola Solare Locarno-Monti since 1957. He was one of the co-founders and for a long time the president of the Società Astronomica Ticinese.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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