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Milani CubeSat for ESA Hera mission
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Hera is the European part of the Asteroid Impact & Deflection Assessment (AIDA) international collaboration with NASA who is responsible for the DART (Double Asteroid Redirection Test) kinetic impactor spacecraft. Hera will be launched in October 2024 and will arrive at Didymos binary asteroid  in January 2027. Milani CubeSat is developed by Tyvak International with a consortium of European Universities, Research Centers and Firms from Italy, Czech Republic and Finland. At arrival it will be deployed and will do independent detailes characterization of Didymos asteroids at distances 5 to 10 km supporting Hera observations. Milani mission objectives are i) Map the global composition of the Didymos asteroids, ii) Characterize the surface of the Didymos asteroids, iii) Evaluate DART impacts effects on Didymos asteroids and support gravity field determination, iv) Characterize dust clouds around the Didymos asteroids. The scientific payloads supporting the achiement of these objectives are “ASPECT”, a visible - near-infrared imaging spectrometer, and “VISTA”, a thermogravimeter aiming at collecting and characterizing volatiles and dust particles below 10µm. 
ASPECT details:
Channel
VIS
NIR1
NIR2
SWIR
Field of View [deg]
10° x 10° 
6.7° x 5.4°
6.7° x 5.4°
5° circular
Spectral range [nm]
500 – 900
850 – 1275
1225  - 1650
1600 - 2500
Image size [pixels]
1024 x 1024
640 x 512
640 x 512
1 pixel
Pixel size [µm]
5.5 µm x 5.5 µm
15 µm x 15 µm
15 µm x 15 µm
1 mm
No. spectral bands
Ca. 14
Ca. 14
Ca. 14
Ca. 30
Spectral resolution [nm]
< 20 nm
< 40 nm
< 40 nm
< 40 nm
 
VISTA details:
Sensor Type
Quartz Crystal Microbalance (QCM)
Resonance frequency
10 MHz
Volume
50mm × 50mm × 38mm
Sensitive area
1.5cm^2
Particles size detection range
5-10 μm to sub-μm particles
Methods/Technique used
1. Dust and contaminants accumulation (passive mode)
2. TGA cycles (active mode)
Mass
90g
Title: Milani CubeSat for ESA Hera mission
Description:
Hera is the European part of the Asteroid Impact & Deflection Assessment (AIDA) international collaboration with NASA who is responsible for the DART (Double Asteroid Redirection Test) kinetic impactor spacecraft.
Hera will be launched in October 2024 and will arrive at Didymos binary asteroid  in January 2027.
 Milani CubeSat is developed by Tyvak International with a consortium of European Universities, Research Centers and Firms from Italy, Czech Republic and Finland.
At arrival it will be deployed and will do independent detailes characterization of Didymos asteroids at distances 5 to 10 km supporting Hera observations.
Milani mission objectives are i) Map the global composition of the Didymos asteroids, ii) Characterize the surface of the Didymos asteroids, iii) Evaluate DART impacts effects on Didymos asteroids and support gravity field determination, iv) Characterize dust clouds around the Didymos asteroids.
The scientific payloads supporting the achiement of these objectives are “ASPECT”, a visible - near-infrared imaging spectrometer, and “VISTA”, a thermogravimeter aiming at collecting and characterizing volatiles and dust particles below 10µm.
 
ASPECT details:
Channel
VIS
NIR1
NIR2
SWIR
Field of View [deg]
10° x 10° 
6.
7° x 5.
4°
6.
7° x 5.
4°
5° circular
Spectral range [nm]
500 – 900
850 – 1275
1225  - 1650
1600 - 2500
Image size [pixels]
1024 x 1024
640 x 512
640 x 512
1 pixel
Pixel size [µm]
5.
5 µm x 5.
5 µm
15 µm x 15 µm
15 µm x 15 µm
1 mm
No.
spectral bands
Ca.
14
Ca.
14
Ca.
14
Ca.
30
Spectral resolution [nm]
< 20 nm
< 40 nm
< 40 nm
< 40 nm
 
VISTA details:
Sensor Type
Quartz Crystal Microbalance (QCM)
Resonance frequency
10 MHz
Volume
50mm × 50mm × 38mm
Sensitive area
1.
5cm^2
Particles size detection range
5-10 μm to sub-μm particles
Methods/Technique used
1.
Dust and contaminants accumulation (passive mode)
2.
TGA cycles (active mode)
Mass
90g.
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