And some preliminary stuff from JPL/NASA Horizons...
Herschel
>> PRELIMINARY TRAJECTORY FOR TESTING PURPOSES ONLY. REALITY WILL DIFFER <<
BACKGROUND:
The European Space Agency's Herschel Space Observatory will cover the full
far infrared and sub-millimetre waveband. It will be located 1.2-1.8 million
kilometres away from Earth in a Lissajous orbit around the second Lagrange
point (L2) of the Earth-Sun system, which is about 1.5 million km from Earth.
OBJECTIVES:
* Study the formation of galaxies in the early universe and their
subsequent evolution
* Investigate the creation of stars and their interaction with the
interstellar medium
* Observe the chemical composition of the atmospheres and surfaces
of comets, planets and satellites
* Examine the molecular chemistry of the universe
SPACECRAFT:
Launch (Ariane-5ECA)= ~2009
Mission end = 2011-2012 (3.5 year nominal after launch)
Telescope mirror = 3.5 meters
Wavelength = Far infrared/sub-millimeter: 60 to 670 (10^-6 m)
Dimensions = 7.5m high, 4m x 4m overall cross section
Launch Mass = 3300 kg
INSTRUMENTS:
* HIFI - Heterodyne Instrument for the Far Infrared
* PACS - Photodetector Array Camera and Spectrometer
* SPIRE - Spectral and Photometric Imaging Receiver
ORBIT:
Herschel and Planck will be launched together, then separate while being
injected into transfer orbits. The spacecraft will proceed independently
to their operational orbits. About 100 days after launch, Herschel
will arrive in an orbit around Earth-Sun L2.
PRE-LAUNCH SPACECRAFT TRAJECTORY (from ESA/IPAC 2009-Jan-21):
Trajectory name (ESA) Start Stop
---------------------------- ----------- -----------
H20090116_0001 2009-Apr-16 2014-Apr-15
Planck
>> PRELIMINARY TRAJECTORY FOR TESTING PURPOSES ONLY. REALITY WILL DIFFER <<
BACKGROUND:
The European Space Agency's Planck mission is designed to image the
anisotropies of the Cosmic Microwave Background (CMB) Radiation Field by
performing two complete sky surveys with the highest sensitivity and
angular resolution to-date. Planck will rotate once per minute, scanning
such that the complete sky will have been covered twice after 15 months.
Planck is planned to launch in the 2009 together with the Herschel
satellite. After launch, Planck and Herschel will separate and will
be placed in different orbits around the second Lagrangian point of
the Earth-Sun System.
OBJECTIVES:
* Mapping of Cosmic Microwave Background anisotropies
* Determination of Hubble constant
* Testing inflationary models of the early universe
* Measuring amplitude of structures in Cosmic Microwave Background
SPACECRAFT:
Launch (Ariane-5)= ~2009
Mission end = (1.5 year nominal lifetime after launch)
Telescope mirror = 1.5 meters
Dimensions = 3.8m high x 4.5m wide
Launch Mass = 1800 kg
INSTRUMENTS:
* LFI - Low Frequency Instrument (30-70 GHz)
* HFI - High Frequency Instrument (100-857 GHz)
ORBIT:
Herschel and Planck will be launched together, then separate while being
injected into transfer orbits. The spacecraft will proceed independently
to their operational orbits. About 100 days after launch, Planck will
arrive in an orbit around Earth-Sun L2.
PRE-LAUNCH SPACECRAFT TRAJECTORY (from IPAC 2009-Jan-21):
Trajectory name (HSC/ESA) Start Stop
---------------------------- ----------- -----------
P20090114_0001 2009-Apr-16 2012-Jul-09
"REALITY WILL DIFFER" !
