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LEO
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GEO

GEO Aries

Highly-maneuverable, multi-mission
platform for proliferated GEO missions.

Configure Now
Configure Now

BUS OVERVIEW

MULTI-MISSION GEO PLATFORM

GEO Aries is a highly-maneuverable, multi-mission platform designed to support high ΔV GEO missions while maximizing payload capacity in an ESPA payload envelope.

From GEO Rendezvous and Proximity Operations to space reconnaissance, GEO Aries is designed for next-gen proliferated operations in the GEO belt.

PAYLOAD MASS

UP TO

120

KG

PAYLOAD OAP

125+

W

Base Power EOL (5 yrs.)

FIRST FLIGHT

2027

DOWNLOAD THE GEO ARIES SPEC SHEET
DOWNLOAD THE GEO ARIES SPEC SHEET

NOTIONAL Missions

Next-generation GEO operations require highly maneuverable platforms built at scale. GEO Aries is enabling the future of GEO spaceflight with agile performance and a production-first design built for resilient, proliferated architectures.

PROLIFERATED GEO

GEO Aries is designed for serial production, enabling resilient proliferated architectures by replacing bespoke buses with scalable platforms.

GEO RPO MISSIONS

GEO Aries is optimized for agility with 800 m/s of available ΔV, 6DOF Hydrazine propulsion, and support for third-party RPO kits.

SPACE reconnaissance

Execute mission-critical space reconnaissance operations with persistent monitoring and responsive operations in geostationary orbit.

PROLIFERATED GEO

GEO Aries is designed for serial production, enabling resilient proliferated architectures by replacing bespoke buses with scalable platforms.

GEO RPO MISSIONS

GEO Aries is optimized for agility with 800 m/s of available ΔV, 6DOF Hydrazine propulsion, and support for third-party RPO kits.

SPACE reconnaissance

Execute mission-critical space reconnaissance operations with persistent monitoring and responsive operations in geostationary orbit.

Base Configuration Package

GEO Aries PLATFORM

Front view of a metallic satellite with two extended solar panels on each side.
DOWNLOAD THE SPEC SHEET
DOWNLOAD THE SPEC SHEET

Design Life 5 Years (GEO direct inject)
Nominal Orbit Circularized GEO
Propulsion Options Chemical Propulsion (up to 800 m/s)
(ΔV performance payload mass dependent)
Compatible Launch Vehicles SpaceX F9 (Rideshare or Dedicated) | ESPAStar | USG ROOSTER | Others

Stowed Payload Volume ESPA 15" Compatible:
1350 × 500 × 600 mm (L x W x H)
Bus Dry Mass 175 kg
Payload Mass Up to 120 kg

Pointing Knowledge 10 arcsec @ 3σ
Pointing Control 20 arcsec @ 3σ
Maximum Slew Rate Up to 1 deg/sec
Precision GNC Package Option: Payload Boresight Mounted Star Tracker (Apex-Furnished)
Pointing Knowledge: 6 arcsec @ 3σ

Payload Orbit Average Power (EOL) Base Model: 125+ W
High Power Configuration: 500 W OAP
Payload Peak Power 500 W (Sustained)
750 W (Instantaneous)
Bus Voltage 28V Unregulated
Encryption Options AES 256 | NSA Type 1
Payload Power Services Gigabit Ethernet | RS422 | PPS | Discretes | 10 MHz Clock Signal | Analog
Payload Data Services RS422 | PPS | Discretes
Communications TT&C
S-Band Uplink (USB compatible): 5 kbps
S-Band Downlink (USB compatible): 25 kbps

[Optional] Mission Data Link
X-Band Downlink: 2.5 Mbps
Ka-Band Downlink: 4 Mbps

CONFIGURE & ORDER YOUR APEX BUS

Select a bus model to start configuring
COMING SOON
PAYLOAD Capacity
150KG
PAYLOAD OAP
180-800W
COMING SOON
PAYLOAD Capacity
150KG
PAYLOAD OAP
180-800W
COMING SOON
PAYLOAD Capacity
150KG
PAYLOAD OAP
180-800W
LEARN MORE
LEARN MORE
ARIES CONFIGURATOR
LEO ARIES
  • Bus Mass: 125 kg
  • Payload Capacity: Up to 150 kg
  • Price includes separation system & virtual flatsat
1.0
Power
2.0
SADAs
3.0
Communications
4.0
Propulsion
5.0
Encryption
6.0
GNC
7.0
Development & Test Equipment
ADD-ONS
8.0
Services
COnfirm your spec
For quantity discounts, contact us.
PAYLOAD OAP
1
KW EOL
VIEW ASSUMPTIONS
ASSUMPTIONS
  • Power: Payload orbit average power (OAP) is listed as End of Life (EOL) and assumes a 550km circular sun-synchronous orbit with sun-tracking for the duration of the orbit.
  • Communications: Data rates listed are peak data rates.
  • Propulsion: Listed prices do not include propellant.
  • Launch Vehicle Integration: Listed LV integration pricing assumes Apex’s standard service and a US-based launch vehicle.
  • Available payload volume and masses shown assume a Falcon 9 Rideshare envelope.
TOTAL
$
00.00
Bus Delivery:
8
COnfirm your spec
For quantity discounts, contact us.
GEO ARIES CONFIGURATOR
GEO ARIES
  • Bus Mass: 175 kg
  • Payload Capacity: Up to 120 kg
  • Delta-V: Up to 800 m/s
  • Price includes separation system & virtual flatsat
1.0
Power
2.0
SADAs
3.0
Communications
4.0
Propulsion
5.0
Encryption
6.0
GNC
7.0
Services
COnfirm your spec
For quantity discounts, contact us.
PAYLOAD OAP
1
KW EOL
VIEW ASSUMPTIONS
ASSUMPTIONS
  • Up to 115 OAP.
  • Communications: Data rates listed are peak data rates.
  • Delta-v up to 800m/s.
  • Assumes standard ESPA volume.
TOTAL
$
00.00
Bus Delivery:
8
COnfirm your spec
For quantity discounts, contact us.
NOVA CONFIGURATOR
NOVA LEO
  • Payload Capacity: 300 kg
  • Pointing Knowledge: 25 arcsec @ 3σ
  • Pointing Control: 50 arcsec @ 3σ
  • Delta-V: Up to 650 m/s
  • Accommodations for 4 OCT’s
1.0
Communications
configurator_fieldset_icon
2.0
Encryption
3.0
GNC
4.0
Services
COnfirm your spec
For quantity discounts, contact us.
PAYLOAD OAP
1
KW EOL
VIEW ASSUMPTIONS
ASSUMPTIONS
  • Power: Payload Orbit Average Power (OAP) means average power available to the payload during an orbit. OAP is quoted at End of Life (EOL) and is true for any orbit within the nominal orbit range. A yaw-steering sun tracking attitude leveraging the single-axis SADAs is assumed.
  • Communications: Data rates listed are 95-percentile atmospheric conditions, 98-percentile worstearth location.
  • Propulsion: Listed prices do not include propellant.
  • Payload Mass: Listed available Payload Volume assumes a SpaceX Falcon 9 Full Plate XL.
  • Launch Vehicle Integration (LVI): Listed LVI prices for Aries do not transfer to Nova.
TOTAL
$
00.00
Bus Delivery:
8
COnfirm your spec
For quantity discounts, contact us.

EXPLORE APEX PLATFORMS

Looking for a different platform to execute your next mission? Apex's Nova and Comet platforms provide resilient LEO platforms to serve demanding proliferated constellations.

PAYLOAD MASS: Up to 300 kg

Nova

Space telescope with extended solar panels against a black background.

Nova is an adaptable LEO constellation workhorse with additional layers of built-in redundancy to maximize reliability and meet the most demanding LEO mission requirements.

DISCOVER NOVA
DISCOVER NOVA

PAYLOAD MASS: 500+ KG

Comet

Space telescope with extended solar panels against a black background.

Comet provides a platform for large-aperture, power-hungry payloads while leveraging a flat pack design to maximize efficiency for large-scale constellation deployments.

DISCOVER COMET
DISCOVER COMET