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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1435276928213766 3.5838e-08  
a 2.631616510534545 1.248e-08 au
q 2.25390666438688 9.4301e-08 au
i 11.84431423524343 5.8795e-06 deg
node 315.6561340163416 1.978e-05 deg
peri 132.2009798397168 3.1819e-05 deg
M 234.7271314421305 2.4755e-05 deg
tp 2459543.108823944244
(2021-Nov-24.60882394)
0.00010884 TDB
period 1559.309520638073
4.27
1.1093e-05
3.037e-08
d
yr
n .2308714179162371 1.6424e-09 deg/d
Q 3.00932635668221 1.4272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1204  
   data-arc span      11878 days (32.52 yr)  
   first obs. used      1988-01-23  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53725  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:17:20  

Additional Information
 Earth MOID = 1.28847 au 
 Jupiter MOID = 2.18965 au 
 T_jup = 3.355 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO395813  
diameter diameter 3.790 km 0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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