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The SkySat constellation is the VHR component of Planets satellite image portfolio.

Skysat-A and B generation satellites were launched in 2013/14.The SkySat-C generation satellite (60 x 60 x 95 cm) is a high-resolution Earth imaging satellite, first launched in 2016, all collecting thousands of square kilometres of imagery. Each satellite is 3-axis stabilized and agile enough to slew between different targets of interest. Each satellite has four thrusters for orbital control, along with four reaction wheels and three magnetic torquers for attitude control.

All SkySats contain Cassegrain telescopes with a focal length of 3.6m, with three 5.5 megapixel CMOS imaging detectors making up the focal plane. Imagery are captured in a continuous strip of single frame images known as "scenes", which are all acquired in the blue, green, red, NIR-infrared, and panchromatic bands.

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PlanetScope and SkySat data now available

12 August 2019

As announced on 29 July, the PlanetScope and SkySat missions are Third Party Missions under evaluation.

This will allow any interested user to investigate the suitability of the data for scientific and R&D activities.

Learn more about the available data from these missions:

PlanetScope and SkySat data familiarisation phase for the Third Party Missions programme

04 September 2018

ESA and Planet are pleased to announce the opportunity to freely access, up to the end of the year, PlanetScope and SkySat data over three European demonstration sites: Demmin, Wilhelmshaven and Berlin.

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Mission details


Operator

Planet

Date of Launch

SkySat-1:         21 Nov 2013
Skysat-2:         08 Jul 2014
Skysat-3:         22 Sep 2016
Skysat-4 to 7: 16 Sep 2016
Skysat-8 to 13: 31 Oct 2017

Mission Status

Operating nominally

Orbit Type

Sun-synchronous

Orbit Altitude

475-575 km

Equator Crossing Time

10:30 (Current C-Gen satellites, SkySat-3 to -7)
13:00 (SkySat-1 to -2)
13:30 (Block-2 C-Gen satellites, SkySat-8 to -13)

Number of satellites

15

SkySat Sensor Specification


Sensor Type

SkySat Satellites have three CMOS Frame Cameras per satellite with Panchromatic and Multispectral halve, which capture overlapping strips. Each of these strips contain overlapping scenes.

Spectral Bands
Blue
Green
Red
NIR
PAN

 

450 – 515 nm
515 – 595 nm
605 – 695 nm
740 – 900 nm
450 - 900 nm

Ground Sample Distance (nadir)

[SkySat-1, SkySat-2]
Panchromatic: 0.86 m
Multispectral: 1.0 m
[SkySat-3 - SkySat-13]
Panchromatic: 0.72 m
Multispectral: 1.0 m

Swath width

8 km at nadir (SkySat-1 to -2)
6.6 km at nadir (SkySat-3 to -13)

Maximum Image Strip length

200 km

Revisit Time

Constellation: sub-daily
Satellite: 4 - 5 days (Reference altitude 500 km)

Image Capture Capacity

400k km² /day

Minimize SkySat Products

Name

Description

Product Level

SkySat Basic Scene Product

The SkySat Basic Scene product includes Analytic and Panchromatic imagery that is uncalibrated and in a raw digital number format. The Basic Scene Product is not radiometrically corrected for atmosphere or for any geometric distortions inherent in the imaging process.

Level 2B

SkySat Visual Ortho Scene

The SkySat Visual Ortho Scene product is orthorectified, pansharpened, and color-corrected (using a color curve) 3-band RGB Imagery.

Level 3B

SkySat Pansharpened Multispectral Ortho Scene

The SkySat Pansharpened Multispectral Scene product is orthorectified, pansharpened, and color-corrected (using a color curve) 4-band BGRN Imagery.

Level 3B

SkySat Analytic DN Ortho Scene

The SkySat Analytic DN Ortho Scene product is orthorectified, multispectral data from the SkySat constellation. The Analytic DN product is an uncalibrated, digital number imagery product. This product is designed for a wide variety of applications that require imagery with an accurate geolocation and cartographic projection. The product has been processed to remove distortions caused by terrain. It eliminates the perspective effect on the ground (not on buildings), restoring the geometry of a vertical shot. In addition to orthorectification, the imagery has radiometric corrections applied to correct for any sensor artifacts. The initial availability does not include transformation to at-sensor radiance.

Level 3B

SkySat Panchromatic DN Ortho Scene

The SkySat Panchromatic Ortho Scene product is orthorectified, panchromatic data from the SkySat constellation. The Panchromatic DN product is an uncalibrated, digital number imagery product. The Panchromatic product has a finer GSD than the Analytic Product due to NOAA license restrictions, and is useful for visual interpretation as well as pan-sharpening of coarser resolution Multispectral data. The initial availability does not include transformation to at-sensor radiance.

Level 3B

SkySat Analytic Ortho Scene

Analytic products are calibrated multispectral imagery products that have been processed to allow analysts to derive information products for data science and analytics. The imagery has radiometric corrections applied to correct for any sensor artifacts and transformation to top-of-atmosphere radiance.
(product is not available for images acquired before October 2017)

Level 3B

SkySat Ortho Collect Product

The Ortho Collect product is created by composing SkySat Ortho Scenes along an imaging strip into segments typically unifying ~60 SkySat Ortho Scenes. The product may contain artifacts resulting from the composing process, particular offsets in areas of stitched source scenes. In a next version, artifacts caused by scene misalignment will be hidden by cutlines. This is particularly important for the appearance of objects in built-up areas and their accurate extraction.

Level 3B