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
ORB-1T
£600,000
£5,000/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)
1GB/day
upgradeable to 100GB/day
S-band, Ka-band, & 3rd-party
ORB-0.1T
£300,000
£5,000/month
~6 months
¼-Plate
15" ESPA
≤ 50 x 48 x 55cm
≤ 100kg
50W (cont.), 2kW (peak)
upgradeable to 500W (continuous)
1GB/day
upgradeable to 100GB/day
S-band, Ka-band, & 3rd-party
ORB-0.5T
£450,000
£5,000/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)
1GB/day
upgradeable to 100GB/day
S-band, Ka-band, & 3rd-party
Baseline Service Price:
Baseline Ops Package:
Lead-Time¹:
Form Factor:
Ring Size:
Payload Volume:
Payload Mass:
Payload Power:
Baseline Data Return:
Ground Segment:
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 it's ESPA-class Flight Units, between contract kick-off and successful completion of in-orbit commissioning, was 5 months.
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
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, 8-10 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
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, 8-10 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
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, 8-10 years MEO, 20+ years GEO
Platform Mass (Dry/Wet):
Redundancy¹:
Compute:
Battery Capacity:
Pointing Accuracy²:
Pointing Knowledge:
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 Electric propulsion system utilising water-based propellant.
⁴ 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.).
⁵ Assumes 8,000km range between two OrbAstro ESPA-class satellites.
⁶ Conventional ESPA-class aluminium or CFRP shear panels struggle to protect against penetration from debris larger than ~0.1mm at ~10km/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. Customers may opt for conventional shear panels to reduce platform dry mass from 30kg to 24kg (no change to baseline price).
⁷ 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), 8-10 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 Service
In-Orbit Commissioning: we lead Satellite Platform commissioning and support the Customer with Payload commissioning.
Constellation-Grade Nanosatellite 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)
Replacement of the Satellite Platform and, unless otherwise stated, all related services under this service agreement (except launch fees), shall apply only in the event of a Constructive Total Loss (CTL) of the Satellite Platform occurring at any time between confirmed dispensing of the Satellite from the Launch Vehicle within the expected orbital parameters envelope and one (1) year thereafter, irrespective of the duration of commissioning or in-orbit testing. This warranty is strictly limited to the Satellite Platform and applies only to failures attributable to defects in its design, manufacture, integration, or performance. For the avoidance of doubt, this warranty excludes the Customer Payload, any Payload- or Customer Furnished Equipment related performance or failures, ground segment systems (including ground stations, networks, and operations), terrestrial shipping or export failures, regulatory blockers, dispenser failure, and launch vehicle failure. This warranty further excludes any failure or loss arising from collision with space debris or other objects, space environment effects (including radiation or solar activity), or other risks customarily covered by in-orbit insurance, which shall remain the responsibility of the Customer. The warranty fee (as a percentage of the total contract price excluding launch) may be revised at Customer CDR and once more at TRB, after which it shall be fixed, as any Satellite configuration or test campaign changes may materially affect the mission risk profile.
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 (9EG) with 8GB LPDDR and 1TB storage)
Telos-40:
Telos-60:
Mission Control & Operations Service
Baseline Operations Package (mandatory)
£5,000/month
S-band Ground-Link (up to 1GB/day, up to 4 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: +£5,000/month
2: +£9,000/month
3: +£12,000/month
4: +£20,000/month
5: +£35,000/month
Tier 1: Up to 1GB/day, up to 2 contacts/day
Tier 2: Up to 10GB/day, up to 4 contacts/day
Tier 3: Up to 25GB/day, up to 6 contacts/day
Tier 4: Up to 50GB/day, up to 8 contacts/day
Tier 5: Up to 100GB/day, up to 12 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