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18555 Courant (1997 CN4)
Classification: Main-belt Asteroid          SPK-ID: 2018555
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0382003673346805 3.2914e-08  
a 2.832504910621289 1.3813e-08 au
q 2.72430218255827 9.7191e-08 au
i 1.244225950789563 3.665e-06 deg
node 332.6157107553089 0.00016989 deg
peri 107.7840293138623 0.00017814 deg
M 22.50463971450341 5.2195e-05 deg
tp 2458891.651111703447
(2020-Feb-12.15111170)
0.00025252 TDB
period 1741.223155930166
4.77
1.2737e-05
3.487e-08
d
yr
n .2067512132341745 1.5123e-09 deg/d
Q 2.940707638684309 1.434e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1393  
   data-arc span      10694 days (29.28 yr)  
   first obs. used      1990-10-18  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5243  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:28:31  

Additional Information
 Earth MOID = 1.74024 au 
 Jupiter MOID = 2.14398 au 
 T_jup = 3.311 
[ 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 MPO412324  

18555 Courant           Discovered 1997 Feb. 4 by P. G. Comba at Prescott.
Richard Courant (1888-1972) studied and later taught at Göttingen. In 1934 he became a professor at New York University, where he founded and led one of the most prestigious institutes of applied mathematics, later named in his honor.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010309/MPCPages.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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