Please make a donation to support Gunter's Space Page.
Thank you very much for visiting Gunter's Space Page. I hope that this site is useful and informative for you.
If you appreciate the information provided on this site, please consider supporting my work by making a simple and secure donation via PayPal. Please help to run the website and keep everything free of charge. Thank you very much.



Surrey Satellite Technology Ltd (SSTL) plans to fly a dedicated satellite for hosted payloads in 2015. This OTB (Orbital Test Bed) satellite will provide the opportunity for Surrey’s Hosted Payload customers to benefit from reliable, low-risk access to orbit, to rapidly and cost-effectively space-qualify new technology, gain flight heritage, acquire mission experience, generate in-orbit data and provide mission continuity capability, without the need to procure a costly dedicated launch.

OTB 1 is based on the SSTL-150 bus and The mission is planned to last five years.

One of the hosted payloads is NASA's DSAC (Deep Space Atomic Clock), a technology demonstration mission with the goal to validate a miniaturized, ultra-precise mercury-ion atomic clock that is 100 times more stable than today’s best navigation clocks.

Also on board is a small capsule with cremated human remains for Celestis, called "Heriatge Flight".

A second mission called OTB 2 is planned for a later date.

Nation: UK
Type / Application: Technology
Operator: SSTL
Contractors: SSTL
Configuration: SSTL-150
Power: 4 deployable fixed solar arrays, batteries
Lifetime: 5 years
Mass: ~ 150 kg
Satellite COSPAR Date LS Launch Vehicle Remarks
OTB 1 - 2018 CCK LC-39A Falcon-Heavy with DSX , FORMOSAT 7A, 7B, 7C, 7D, 7E, 7F, GPIM, NPSat 1, Oculus-ASR, Prox 1, LightSail B, ARMADILLO, FalconSat 7, TBEx A, TBEx B, Prometheus 2.5, Prometheus 2.6, Prometheus 2.7, Prometheus 2.8, Prometheus 2.9, Prometheus 2.10, PSat 2, BRICSat 2, TEPCE 1, TEPCE 2, CP 9 (LEO), StangSat, DOTS-X, CNGB, Ballast
OTB 2 - 201x with ?