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74438 (1999 CT)
Classification: Main-belt Asteroid          SPK-ID: 2074438
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1346313126010902 3.9601e-08  
a 3.048011973195244 2.0802e-08 au
q 2.637654120420129 1.2146e-07 au
i 11.91867060535785 5.2935e-06 deg
node 123.1522714997265 2.1449e-05 deg
peri 128.37693566 2.9299e-05 deg
M 272.8675044592155 2.1788e-05 deg
tp 2459470.936577592150
(2021-Sep-13.43657759)
0.00011964 TDB
period 1943.674020605806
5.32
1.9898e-05
5.448e-08
d
yr
n .185216243147498 1.8961e-09 deg/d
Q 3.458369825970358 2.3603e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1119  
   data-arc span      7745 days (21.20 yr)  
   first obs. used      1999-02-05  
   last obs. used      2020-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54085  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:05:09  

Additional Information
 Earth MOID = 1.64212 au 
 Jupiter MOID = 1.72917 au 
 T_jup = 3.191 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO337818  
diameter diameter 4.546 km 0.120 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.215   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74438 (1999 CT)          Discovered 1999-Feb-05 by Kobayashi, T. at Oizumi
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 CT = 2000 KA8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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