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Hera

Built by European Space Agency · Netherlands

Updated Jun 2026·methodology
Hera

Overview

Hera is ESA's first planetary defence mission that will perform a detailed post-impact survey of the target asteroid Dimorphos, the orbiting moonlet of a binary asteroid system known as Didymos. Following NASA's DART mission impact, Hera will turn the grand-scale experiment into a well-understood and repeatable planetary defence technique. Demonstrating new technologies from autonomous navigation around an asteroid to low gravity proximity operations, Hera will be humankind's first probe to rendezvous with a binary asteroid system and Europe's flagship Planetary Defender.

Specifications

Category: Research
Weight
1,214 kg
Autonomy
fully autonomous
Launch year
2024
Price
$52,000,000
Status
active

Detailed specifications

Other16
Price Tier
150K+
Applications
sample_handling,visual_inspection
Sub Category
deep-space asteroid probe
Pricing Model
purchase
Model Variants
Juventas,GRASS
Company Country
EU
Navigation Type
vision
Deployment Count
2
Deployment Notes
Deploys two '6-unit-XL' CubeSats (Milani and Juventas) at a few centimetres per second into deep space for asteroid surveying[1][3][4][8]
Compatible Vision
main navigation cameras,thermal imager,multispectral imager,laser altimeter,low-frequency radar,gravimeter
Industries Served
space_research
Training Required
advanced_>5days
Availability Status
available
Countries Available
Germany,Belgium,Romania,Luxembourg,Sweden,Portugal,Spain,Czech Republic,Austria,Finland,Poland,Switzerland
Extras Contact Emails
contact@esa.int,info@esa.int,press@esa.int,partnerships@esa.int
Additional Information
Hera will help turn DART’s impact experiment into a well-understood and repeatable deflection technique – ready to be deployed if an asteroid should ever be spotted heading towards Earth.,In September 2020, ESA awarded a €129.4 million contract covering the detailed design, manufacturing and testing of Hera.,Hera will demonstrate novel technologies and deploy Europe’s first deep-space CubeSats to survey the asteroid close up.

Where will these robots operate? Often the same as your country — add more for multi-country deployments.

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