D-Star One [German Orbital Systems]
Official name ISAT
Alternative name iSat
Cospar ID 2018-111D
Norad ID 43879
Launch date 2018-12-27
Launch site VOSTO
Launch vehicle Soyuz-2-1a Fregat
Country/Organization Germany
Type application Communications
Operator German Orbital Systems GmbH
RCS size SMALL
Decay date ON ORBIT
Period (min) 94.16
Inclination (deg) 97.6
Perigee (km) 473
Apogee (km) 482
Eccentricity 0.00942408376963351
Mean motion (revs. per day) 15.2931180968564
Semi-Major axis (km) 6855.635
Raan (deg) 59.7809
Arg of perigee (deg) 243.6024
Shape Box + 1 Ant
Mass (kg) 3
Height (m) 0.3
Width (m) 0.1
Depth (m) 0.1
Span (m^2) 1
Lifetime 1 year
Contractors German Orbital Systems GmbH
Equipment 2 D-Star communication modules
Propulsion None
Configuration CubeSat (3U)
Power Solar cells, batteries

D-Star One is a 3U CubeSat designed and built by German Orbital Systems as a technology demonstration for their planned CubeSat communications constellation.

The satellite is equipped with two D-Star communication modules onboard. These modules will be fully dedicated to the amateur radio community. Subsequent satellites will have enhanced capabilities and address larger potential customer groups.

The satellite was launched on 28 November 2017 as a copassenger on a Soyuz-2-1b Fregat rocket, but was lost due to an upper stage problem.

A reflight under the designation D-Star One v.1.1 Phoenix took place in February 2018, but apparently the satellite was not deployed.

Two more D-Star One satellites, called Sparrow and iSat were successfully launched in 2018.

Another two D-Star One satellites, called EXOCONNECT and LightSat are to be launched in June 2019.

Satellite COSPAR Date LS Launch Vehicle Remarks
ISAT 2018-111D 2018-12-27 VOSTO Soyuz-2-1a Fregat with Kanopus-V 5, Kanopus-V 6, GRUS 1A, Flock-3k 1, ..., 12, Lemur-2 88, ..., 95, D-Star ONE Sparrow, ZACUBE 2, Lume 1, UWE 4, Dummy, SAMSON-Dummy 1, 2, 3
D-STAR ONE SPARROW 2018-111F 2018-12-27 VOSTO Soyuz-2-1a Fregat with Kanopus-V 5, Kanopus-V 6, GRUS 1A, Flock-3k 1, ..., 12, Lemur-2 88, ..., 95, D-Star ONE iSat, ZACUBE 2, Lume 1, UWE 4, Dummy, SAMSON-Dummy 1, 2, 3
D STAR ONE (EXOCONNECT) 2019-038AA 2019-07-05 VOSTO Soyuz-2-1b Fregat with Meteor-M 2-2, ICEYE X4, ICEYE X5, CarboNIX, DoT 1, Momentus X1, Lemur-2 100, ..., 107, NSLSat 1, SEAM 2.0, SONATE, JAISAT 1, LightSat, UTE-Ecuador, Lucky-7, MOVE 2b, MTCube, TTÜ101, BeeSat 9, BeeSat 10, 11, 12, 13, AmGU 1, Sokrat, VDNH-80
D STAR ONE (LIGHTSAT) 2019-038H 2019-07-05 VOSTO Soyuz-2-1b Fregat with Meteor-M 2-2, ICEYE X4, ICEYE X5, CarboNIX, DoT 1, Momentus X1, Lemur-2 100, ..., 107, NSLSat 1, SEAM 2.0, SONATE, JAISAT 1, EXOCONNECT, UTE-Ecuador, Lucky-7, MOVE 2b, MTCube, TTÜ101, BeeSat 9, BeeSat 10, 11, 12, 13, AmGU 1, Sokrat, VDNH-80