ESPA-class
Satellites
Standardised, batch-produced, flight-proven constellation-grade ESPA-class satellites that provide high payload mass fraction, low integration burden, low managerial overhead, and a rapid route to orbit.
Satellite Classes & Mission Envelope
Satellite missions — not bare satellite buses. Baseline pricing includes the spacecraft platform, payload integration support, testing, storage, spectrum filing, launch licence, commissioning, and baseline ground-station network access. Launch, customer payload, insurance, optional upgrades, third-party pass-through costs, and non-standard mission-specific requirements are priced separately.
ORB-1T
£600,000
£8,000/month
6 months
Full-Plate
24" ESPA / 4-point Interface
≤ 101 x 101 x 55cm
≤ 1,000kg
490W (cont.), 8kW (peak)
upgradeable to 3.5kW (continuous)
6GB/day
upgradeable to 1TB/day
S-band, Ka-band, & 3rd-party
ORB-0.1T
£300,000
£8,000/month
6 months
¼-Plate
15" ESPA
≤ 50 x 48 x 55cm
≤ 100kg
50W (cont.), 2kW (peak)
upgradeable to 500W (continuous)
6GB/day
upgradeable to 1TB/day
S-band, Ka-band, & 3rd-party
ORB-0.5T
£450,000
£8,000/month
6 months
½-Plate
15" ESPA / 4-point Interface
≤ 50 x 100 x 55cm
≤ 500kg
120W (cont.), 2kW (peak)
upgradeable to 1.1kW (continuous)
6GB/day
upgradeable to 1TB/day
S-band, Ka-band, & 3rd-party
Baseline Mission Delivery Price:
Baseline Operations Package:
Lead-Time¹:
Form Factor:
Ring Size:
Payload Volume:
Payload Mass:
Payload Power:
Baseline Data Return:
Ground Segment²:
¹ Lead-time is highly dependent on the Customer. Once the configuration of the Payload within the Satellite Platform is frozen, lead-time for delivery of the Flight Unit is typically 2-3 months. The fastest OrbAstro has delivered one of its ESPA-class Flight Units, between contract kick-off and successful completion of in-orbit commissioning, was 5 months.
² OrbAstro satellite have access to a distributed S-band, Ka-band, and third-party ground stations typically providing up to 280 passes and 2,000 contact minutes per week, enabling high-rate downlink, lower latency, faster recovery, and greater operational resilience for missions.
Includes:
Baseline Satellite Specifications
ORB-1T
78kg / 108kg
All critical subsystems are dual redundant or better (upgradable)
Zynq Ultrascale+ MPSoC (5EG) with 4GB LPDDR4 RAM
380Wh
expandable to 1.8kWh
0.05º (3σ)
upgradeable to 0.01º
<0.01º
upgradeable to <0.001º
0.06°/h bias stability, 0.008°/h bias repeatability, 0.002°/√h ARW
5º/s
1.0km/s
540W
expandable to 3.7kW
1Mbps, S-Band (omni-directional)
500Mbps, Ka-band
expandable to 4Gbps
1Mbps, Ka-band
expandable to 10Mbps
AES-256 encryption, RSA-4096 authentication
CFRP-titanium-alloy
25+ years LEO, 10 years MEO, 20+ years GEO
ORB-0.1T
30kg / 39kg
All critical subsystems are dual redundant or better (upgradable)
Zynq Ultrascale+ MPSoC (5EG) with 4GB LPDDR4 RAM
192Wh
expandable to 910Wh
0.05º (3σ)
upgradeable to 0.01º
<0.01º
upgradeable to <0.001º
0.06°/h bias stability, 0.008°/h bias repeatability, 0.002°/√h ARW
5º/s
1.0km/s
75W
expandable to 525W
1Mbps, S-Band (omni-directional)
500Mbps, Ka-band
expandable to 4Gbps
1Mbps, Ka-band
expandable to 10Mbps
AES-256 encryption, RSA-4096 authentication
CFRP-titanium-alloy
25+ years LEO, 10 years MEO, 20+ years GEO
ORB-0.5T
36kg / 56kg
All critical subsystems are dual redundant or better (upgradable)
Zynq Ultrascale+ MPSoC (5EG) with 4GB LPDDR4 RAM
192Wh
expandable to 910Wh
0.05º (3σ)
upgradeable to 0.01º
<0.01º
upgradeable to <0.001º
0.06°/h bias stability, 0.008°/h bias repeatability, 0.002°/√h ARW
5º/s
1.0km/s
150W
expandable to 1.1kW
1Mbps, S-Band (omni-directional)
500Mbps, Ka-band
expandable to 4Gbps
1Mbps, Ka-band
expandable to 10Mbps
AES-256 encryption, RSA-4096 authentication
CFRP-titanium-alloy
25+ years LEO, 10 years MEO, 20+ years GEO
Platform Mass (Dry/Wet):
Redundancy¹:
Compute:
Battery Capacity:
Pointing Accuracy²:
Pointing Knowledge:
3-Axis Optical Gyro:
Slew Rate (max.):
Delta-V (typical)³:
Power Generation:
TT&C:
Data Downlink⁴:
Inter-Sat Link⁵:
Encryption & Security:
Debris Shielding⁶:
Mission Lifetime⁷:
¹ Redundant subsystems include: EPS, S-band TT&C, magnetorquers, ADCS sensors (except star tracker and 3-axis optical gyro). Additional redundancy available through High Performance Satellite Upgrade option.
² Achieved with 3x large reaction wheels, 3x small reaction wheels, 6x magnetorquers, 2x star-trackers, 3-axis optical gyros, and standard ADCS sensors.
³ Per axis, 10 s, 1σ, ambient.
⁴ Electric propulsion system utilising water-based propellant.
⁵ Ground link data rates quoted for typical LEO ranges using standard OrbAstro ground terminals; interoperable with third-party ground networks (including AWS, KSAT, LeafSpace, etc.).
⁶ Assumes 8,000km range between two OrbAstro ESPA-class satellites.
⁷ Conventional ESPA-class aluminium or CFRP shear panels struggle to protect against penetration from debris larger than ~0.1mm at ~15km/s. OrbAstro’s enhanced shear panels extend this protection to ~1mm, enabling resistance to particles carrying up to ~1,000× greater impact energy and covering an additional debris population estimated at dozens of impacts per year on ESPA-class satellite in LEO. Debris impact remains a major cause of mission failure (e.g. fuel tank ruptured, harness severed, PCB damaged). OrbAstro’s enhanced shear panel configuration materially improves operational resilience.
⁸ EDAC-protected memory (1-bit correction per 4-32 bits, depending on subsystem) and hardware/software SEU mitigation throughout, including clock and current monitoring. Memory and power switching devices are the primary radiation life-limiting components. Developed in collaboration with ESA and aligned with ESA mission assurance practices. Estimated radiation-limited lifetime: 25+ years in LEO (500km), 10 years in MEO, and 20+ years in GEO.
Payload Specifications
ORB-1T
≤ 101× 101× 55cm
≤ 1,000kg
490W (cont.), 8kW (peak)
upgradeable to 3.5kW (continuous)
Unregulated VBAT, 28V, 12V, 5V, 3.3V
1TB (NVMe SSD)
expandable to 16TB
4× RS422, 4× CAN, 4× I2C,
8× LVDS (1.2Gbps each), 4× Gigabit transceivers (32Gbps each).
ORB-0.1T
≤ 50× 48× 55cm
≤ 100kg
50W (cont.), 2kW (peak)
upgradeable to 500W (continuous)
Unregulated VBAT, 28V, 12V, 5V, 3.3V
1TB (NVMe SSD)
expandable to 16TB
4× RS422, 4× CAN, 4× I2C,
8× LVDS (1.2Gbps each), 4× Gigabit transceivers (32Gbps each).
ORB-0.5T
≤ 50× 100× 55cm
≤ 500kg
120W (cont.), 2kW (peak)
upgradeable to 1.0kW (continuous)
Unregulated VBAT, 28V, 12V, 5V, 3.3V
1TB (NVMe SSD)
expandable to 16TB
4× RS422, 4× CAN, 4× I2C,
8× LVDS (1.2Gbps each), 4× Gigabit transceivers (32Gbps each).
Payload Volume:
Payload Mass:
Payload Power:
Regulated Payload Power Bus:
Data Storage:
Data Interfaces:
High-Speed Data Interfaces:
Baseline Mission Delivery Service
In-Orbit Commissioning: we lead Satellite Platform commissioning and support the Customer with Payload commissioning.
Constellation-Grade ESPA-class Satellite Platform.
Flat-Sat for Payload electrical interfacing & software testing.
Mission Control System for mission rehearsal and pre-build day-in-the-life simulations.
Payload Integration Support: standardised payload electrical, mechanical, & software interfaces minimise NRE & integration risk.
Satellite Flight Acceptance Testing in accordance with the requirements of the Launch Provider.
Launch Permit: LEO, along with debris assessment support.
Spectrum Filing: S-band uplink, downlink. Ka-band downlink & ISL.
Secure on-site Satellite storage & maintenance prior to shipment for launch.
Day-in-the-life testing of Satellite flight unit.
Telemetry monitoring, command interfaces, and ground-segment access support day-to-day operations.
Access to platform software for automated pointing, power, communications, and attitude control.
Mission Operations reporting tracks health, activity, remaining life, and disposal confidence.
Anomaly-response support covers safe mode, loss of contact, cyber, and regulatory issues.
OrbAstro managed conjunction response, collision avoidance, and regulatory compliance.
Decommissioning support includes disposal planning and controlled end-of-life execution where feasible.
Optional Extras
High Performance Satellite Upgrade
ORB-1T
+£230,000
0.01º (3σ)
<0.001º (3σ)
4Gbps DL & 10Mbps ISL
550Wh
8TB (NVMe SSD)
All subsystem dual-redundant or better
(except Ka-band system)
ORB-0.5T
+£180,000
0.01º (3σ)
<0.001º (3σ)
4Gbps DL & 10Mbps ISL
380Wh
8TB (NVMe SSD)
All subsystem dual-redundant or better
(except Ka-band system)
ORB-0.1T
+£180,000
0.01º (3σ)
<0.001º (3σ)
4Gbps DL & 10Mbps ISL
380Wh
8TB (NVMe SSD)
All subsystem dual-redundant or better
(except Ka-band system)
Price:
Pointing Accuracy:
Pointing Knowledge:
Comms:
EPS:
Payload Data Storage:
Redundancy:
+15% Total Service Price (ex. launch)
OrbAstro offers an in-orbit performance warranty on the satellite platform and associated platform services. If the platform is lost within the agreed orbital envelope during its first year on orbit, we will replace it and re-perform the covered service scope. The warranty is limited to the OrbAstro platform itself and excludes payloads, launch, ground systems, regulatory issues, and external in-orbit hazards.
Satellite Platform In-Orbit Performance Warranty
Launch Procurement & Management
+£9,500/kg
OrbAstro procurement and management of launch services, and associated documentation through a 3rd-party rideshare aggregator and/or launch provider. Price includes separation ring and is dependent on provider/orbit selected.
Flat Platform
Rather than have the Satellite Platform chassis enclose the Payload, the housing can be removed and instead a flat interface plate on which to mount the payload can be provided. There is no fee associated with this change, however, where this option is selected, the fixed chassis-mounted solar panel listed in the baseline platform specifications is not installed; therefore, one Deployable Solar Panels option must be selected, and the stated deployable-panel power values shall be reduced accordingly.
Dual-Winged Deployable Solar Panels
(Power shown = total satellite solar generation)
ORB-1T
1,600W
+£650,000
2,700W
+£1,040,000
3,700W
+£1,220,000
+£115,000
ORB-0.5T
450W
+£220,000
750W
+£350,000
1,050W
+£470,000
+£95,000
ORB-0.1T
225W
+£105,000
375W
+£195,000
525W
+£280,000
+£75,000
Each wing has
1 Panel:
2 Panels:
3 Panels:
1-DOF articulation:
EPS Battery
(Capacity shown = total satellite battery capacity)
Upgrade 1:
Upgrade 2:
Upgrade 3:
ORB-0.1T
380Wh
+£30,000
550Wh
+£80,000
910Wh
+£120,000
ORB-0.5T
380Wh
+£30,000
550Wh
+£80,000
910Wh
+£120,000
ORB-1T
550Wh
+£70,000
910Wh
+£110,000
1.8 kWh
+£180,000
Satellite EQM Chassis
(For Payload fit-check, harness check, etc.)
Bare Chassis:
Chassis & Shear Panels:
Flat Platform:
ORB-0.1T
+£40,000
+£50,000
+£15,000
ORB-0.5T
+£50,000
+£60,000
+£18,000
ORB-1T
+£80,000
+£90,000
+£25,000
Additional Onboard Data Storage
+£20,000 (NVMe SSD)
+£35,000 (NVMe SSD)
8TB:
16TB:
Additional Onboard Computer for Payload
+£12,000 (Xilinx Ultrascale+ MPSoC (5EG) with 4GB LPDDR and 1TB storage)
+£45,000 (Xilinx Ultrascale+ MPSoC (9/11/15EG) with up to 96GB DDR and 1TB storage)
Telos-40:
Telos-60:
Mission Control & Operations Service
Baseline Operations Package (mandatory)
£8,000/month
S-band Ground-Link (up to 1GB/day, up to 4 links/day, 95%+ availability)
Ka-band Ground-Link (up to 5GB/day, up to 2 links/day, 95%+ availability)
Mission Control System: Satellite, Mission, & Constellation Operations
OrbAstro-managed Space Traffic Management
4 hours technical support per month
Data consumed for Satellite Platform operations is up to 20MB/day, and up to 200MB/day for commissioning. Note: constraints are for uplink + downlink.
Tier 1: Up to 1GB/day, up to 8 contacts/day
Tier 2: Up to 1.5GB/day, up to 12 contacts/day
Tier 3: Up to 2GB/day, up to 16 contacts/day
1: +£4,000/month
2: +£6,000/month
3: +£8,000/month
1: +£9,000/month
2: +£12,000/month
3: +£20,000/month
4: +£35,000/month
5: +£110,000/month
6: +£200,000/month
Tier 1: Up to 10GB/day, up to 4 contacts/day
Tier 2: Up to 25GB/day, up to 6 contacts/day
Tier 3: Up to 50GB/day, up to 8 contacts/day
Tier 4: Up to 100GB/day, up to 12 contacts/day
Tier 5: Up to 500GB/day, up to 20 contacts/day
Tier 6: Up to 1TB/day, up to 30 contacts/day
OrbAstro-managed Mission Operations
+£4,000/month
OrbAstro-managed Constellation Operations
Exploration-class Mission Operations (required beyond GEO)
+£3,000/month (per satellite)
+£12,000/month
Additional 3rd-party Ground Stations
+£25,000 setup
+£2,000/month
In addition to utilisation OrbAstro's Ground Station Network, integration of customer-arranged ground-link providers such as AWS, KSAT, or LeafSpace, including OrbAstro SDR setup, ongoing hardware/software support, and 4 hours of technical support per month.
Up to 30 person-hours per month of OrbAstro-managed mission planning, command support, telemetry monitoring, anomaly triage, and routine reporting. Mission Control System access, baseline ground links, and space traffic management remain included in the baseline package.
OrbAstro-managed fleet operations for multi-satellite missions utilising Mission Control System. Intended for coordinated planning, commanding, and repeatable operational workflows as you scale from one spacecraft to many.
A higher-intensity mission operations framework for exploration-class missions, covering the same core operations stack with elevated operational management and protective authority for more demanding mission environments.
Command & Control Capacity Upgrade (S-band)
High-Rate Downlink Capacity Upgrade (Ka-band)
Discuss your mission
HQ ADDRESS
Thames Court, Goring, Oxfordshire, RG8 9AQ, United Kingdom
CONTACT US
hello@orbastro.com