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Home All issues Volume 520 (September-October 2010) A&A, 520 (2010) A1 Full HTML

 

 

Table 1:

Planck satellite characteristics.

Diameter 		4.2 m Defined by the solar array
Height 4.2 m  
Total mass at launch 1912 kg Fuel mass = 385 kg at launch; He mass = 7.7 kg
Electrical power demand (avg) 1300 W Instrument part: 685 W (Begining of Life), 780 W (End of Life)
Operational lifetime 18 months Plus a possible extension of one year
Spin rate 1 rpm $\pm $0.6 arcmin/sec (changes due to manoeuvers)
    Stability during inertial pointing $\sim $  $ 6.5 \times 10^{-5}$ rpm/h
Max angle of spin axis to Sun 10$^\circ $ To maintain the payload in the shade. Default angle is 7 $\hbox{$.\!\!^\circ$ }$5.
Max angle of spin axis to Earth 15$^\circ $ To allow communication to Earth
Angle between spin axis and telescope boresight 85$^\circ $ Max extent of FOV $\sim $ 8$^\circ $
On-board data storage capacity 32 Gbit Two redundant units (only one is operational at any time)
Data transmission rate to ground (max) 1.5 Mbps Within 15$^\circ $ of Earth, using a 35 m ground antenna
Daily contact period 3 h The effective real-time science data acquisition bandwidth is 130 kbps.


Source LaTeX | All tables | In the text

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