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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446994378514335 5.9212e-08  
a 2.62988463105249 2.2859e-08 AU
q 2.24934180332507 1.5928e-07 AU
i 11.82526711871167 7.952e-06 deg
node 315.8240734125395 4.3775e-05 deg
peri 131.1308678168983 6.428e-05 deg
M 133.9097574347472 4.3153e-05 deg
tp 2456421.053698633683
(2013-May-08.55369863)
0.00018517 JED
period 1557.770490276059
4.26
2.0311e-05
5.561e-08
d
yr
n .231099511928874 3.0131e-09 deg/d
Q 3.01042745877991 2.6167e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      675  
   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      .52235  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 16:51:48  

Additional Information
 Earth MOID = 1.2843 AU 
 T_jup = 3.356 
[ 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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