Dawn

retired

Science ExplorationinterplanetaryCOSPAR 2007-043ALaunched 9/27/2007

Admin Edit

Mission & Launch

Launch Mission: Dawn Mission
Launch Vehicle: Delta 7925H
Launch Date: 9/27/2007
Last Contact: 10/30/2018

Orbit & Mass

Orbit Class: interplanetary
Altitude: -41,605.5 km
Inclination: 28.9 deg
Dry Mass: 747 kg
Total Mass: 1,218 kg

Payload Classification

Organizations

Operator: NASA Jet Propulsion Laboratory
Manufacturer: Northrop Grumman

Registry

COSPAR ID: 2007-043A
UN Registration: ST/SG/SER.E/524

Mentions

All verified mentions of this spacecraft in source documents.

The Twilight rideshare mission targets a Dusk/Dawn Sun Synchronous Orbit.

PlanCapabilityValue 3.4Jan 11, 2026RT by @Cosmic_Penguin: RT by @Cosmic_Penguin: SpaceX launches the first Twilight rideshare mission carrying 40 payloads to a Dusk/Dawn Sun Synchronous Orbit from Vandenberg Space Force Base in California .

Page2of4

The Twilight rideshare mission is targeting a dusk-dawn orbit.

Exolaunch will support satellite deployments on the Twilight dawn-dusk mission to provide clients with dedicated access to a specialized sun-synchronous orbit requested by Earth observation, climate monitoring, and technology demonstration missions.

CapabilityPlanGeneralValue 4.0Dec 30, 2025Exolaunch to Deploy 22 Satellites on 2026 ‘Twilight’ Rideshare Mission

The proposed plan includes a constellation of 16 centralized space data centers in a dawn-dusk orbit 700 to 800 kilometers above Earth.

PlanCapabilityValue 4.0Dec 4, 2025Beijing space lab targets orbital data centers for AI era

Dawn's integrated docking port will make the OSSIE spacecraft ready for inspection, servicing, or de-orbit operations.

CapabilityPlanValue 3.0Oct 30, 2025UARX’s OSSIE Spacecraft to fly Dawn Aerospace’s docking port

Dawn’s Loop Network is expected to launch before 2030, enabling customers equipped with the DFT interface to access in-orbit refueling and end-of-life servicing options.

PlanCapabilityGeneralValue 4.0Oct 30, 2025UARX’s OSSIE Spacecraft to fly Dawn Aerospace’s docking port

Dawn’s Loop Network aims to extend spacecraft lifetimes, reduce orbital debris, and enable sustainable mission operations aligned with the EU Space Act, ESA’s Zero Debris Charter, and ISO 24113:2023 standards.

GeneralLegalValue 2.0Oct 30, 2025UARX’s OSSIE Spacecraft to fly Dawn Aerospace’s docking port

The collaboration between UARX Space and Dawn Aerospace includes the use of Dawn’s SatDrive propulsion system to power the OSSIE spacecraft.

RelationshipsCapabilityValue 4.5Oct 30, 2025UARX’s OSSIE Spacecraft to fly Dawn Aerospace’s docking port

Dawn Aerospace, operating as Dawn Hypersonics, conducted a supersonic flight of its Mk-II Aurora rocket-powered aircraft on 2024-11-12.

CapabilityPlanValue 4.0Nov 18, 2024Dawn Aerospace achieves historic flight – breaks sound barrier + global records

The EnduroSat CubeSat platform selected for Hellenic Space Dawn includes an S-band transceiver for communication and an X-band link for data transmission.

CapabilityGeneralValue 4.0Oct 21, 2024Hellenic Space Dawn mission adopts ENDUROSAT CubeSat-bus

The EnduroSat CubeSat platform selected for Hellenic Space Dawn includes an electrical power system supported by large batteries and advanced solar panels.

CapabilityValue 4.2Oct 21, 2024Hellenic Space Dawn mission adopts ENDUROSAT CubeSat-bus

Lunar Dawn was one of three projects selected by NASA in April 2025 for the Lunar Terrain Vehicle Services program.

RelationshipsPlanValue 4.0May 29, 2024MDA Space joins Starlab Space commercial space station venture