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74439 Brenden (1999 CT2)
Classification: Main-belt Asteroid          SPK-ID: 2074439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842952957378729 3.9277e-08  
a 3.194818964141822 2.6746e-08 au
q 2.60602885831634 1.3144e-07 au
i 5.626883639936435 5.1659e-06 deg
node 143.8167374238719 4.7076e-05 deg
peri 273.1347540791683 4.9305e-05 deg
M 312.6645989386773 1.631e-05 deg
tp 2459274.752987910745
(2021-Mar-01.25298791)
9.6311e-05 TDB
period 2085.776679486936
5.71
2.6192e-05
7.171e-08
d
yr
n .1725975765001618 2.1674e-09 deg/d
Q 3.783609069967304 3.1675e-08 au
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      9388 days (25.70 yr)  
   first obs. used      1994-03-05  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:05:10  

Additional Information
 Earth MOID = 1.6257 au 
 Jupiter MOID = 1.61498 au 
 T_jup = 3.162 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457094.5 (2015-Mar-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .179895250755015 3.8723e-08  
q 2.624743268205338 1.2925e-07 au
tp 2457164.005217906615
(2015-May-21.50521791)
8.9223e-05 TDB
node 144.5937695093709 4.6861e-05 deg
peri 269.7042468350149 4.9367e-05 deg
i 5.633411412710569 5.1847e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      9388 days (25.70 yr)  
   first obs. used      1994-03-05  
   last obs. used      2019-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:05:10  

Additional Information
 Jupiter MOID = 1.61498 au 
 T_jup = 3.162 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.499508197130447E-15 -4.930686238374045E-15 -6.923501220478732E-13 -9.03308412550097E-16 -1.266581818608392E-13 4.884432582305431E-16
q -4.930686238374045E-15 1.670559409649401E-14 2.954426600760286E-12 1.047701524598575E-14 5.141311095552386E-13 1.296733932817584E-15
tp -6.923501220478732E-13 2.954426600760286E-12 7.960829476586809E-9 -1.691866724302445E-11 1.414941879224965E-9 -3.049260107430812E-13
node -9.03308412550097E-16 1.047701524598575E-14 -1.691866724302445E-11 2.195953181919902E-9 -2.187721514733214E-9 4.563190388913033E-11
peri -1.266581818608392E-13 5.141311095552386E-13 1.414941879224965E-9 -2.187721514733214E-9 2.43706104387792E-9 -4.548668666065353E-11
i 4.884432582305431E-16 1.296733932817584E-15 -3.049260107430812E-13 4.563190388913033E-11 -4.548668666065353E-11 2.688158036839809E-11

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 14.9   n/a MPO449470  
diameter diameter 5.939 km 0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74439 Brenden           Discovered 1999 Feb. 6 by W. R. Cooney Jr. at Baton Rouge.
Craig Brenden (b. 1946) is a teacher of chemistry and an amateur astronomer. A co-founder of the Baton Rouge Astronomical Society, he has served the society as Vice-president many times, and was editor of Night Visions (the society newsletter) for thirty years.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2013-07-22Last Updated: 2014-08-13

[ show close-approach data ]
Alternate Designations
 1999 CT2 = 2002 PH151 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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