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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1442494882149384 5.9013e-08  
a 2.630884031481113 2.2888e-08 au
q 2.251380356387108 1.5873e-07 au
i 11.82391663989966 7.9515e-06 deg
node 315.8231852199785 4.3651e-05 deg
peri 131.1265144055422 6.4294e-05 deg
M 272.5162579818664 4.376e-05 deg
tp 2457979.270227452095
(2017-Aug-13.77022745)
0.00019081 JED
period 1558.658543143823
4.27
2.034e-05
5.569e-08
d
yr
n .2309678419199358 3.0141e-09 deg/d
Q 3.010387706575117 2.619e-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 = 1.28498 au 
 Jupiter MOID = 2.20016 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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