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Launch of small spacecraft together with larger one
Secondary payload, also known as rideshare payload, is a smaller-sized payload transported to orbit on a launch vehicle that is mostly paid for—and with
Secondary_payload
Spacecraft-rocket stage connector used as an American spaceflight industry standard
The EELV Secondary Payload Adapter (ESPA) is an adapter for launching secondary payloads on orbital launch vehicles. Originally developed for US launch
EELV Secondary Payload Adapter
EELV_Secondary_Payload_Adapter
Open source satellite
an integrated GPS antenna. IAC (Image Acquisition Component) (see secondary payload) Structure The structural sub-system is based on a "hybrid" approach
UPSat
Due to ISS visiting vehicle safety rules, at NASA's request, the secondary payload Orbcomm-2 was released into a lower-than-intended orbit. The mission
List of Falcon 9 and Falcon Heavy launches (2010–2019)
List_of_Falcon_9_and_Falcon_Heavy_launches_(2010–2019)
2026 crewed flyby of the Moon
2019 from U.S. institutions and companies to fly CubeSat missions as secondary payloads aboard the SLS on the Artemis II mission. NASA planned to accept 6-unit
Artemis_II
2012 American resupply spaceflight to the ISS
satellite was planned to be launched as a secondary payload from Falcon 9's second stage. Although the secondary payload made it to the Dragon insertion orbit
SpaceX_CRS-1
Partially-reusable medium-lift launch vehicle by SpaceX
payload. Payloads can be accommodated using the EELV Secondary Payload Adapter (ESPA) ring, the same interstage adapter used for secondary payloads on
Falcon_9
Satellites of low mass and size, usually under 1200 kg
have been carried to space for many years as secondary payloads aboard larger launchers, the secondary payload paradigm does not provide the specificity
Small_satellite
Argentine deep-space cubesat
and Argentina's National Space Activities Commission (CONAE) as a secondary payload on NASA's Artemis II mission. The main objectives of ATENEA were to
ATENEA_(satellite)
Japanese navigation satellite
hosted payloads, QZS-6 hosts a secondary payload from the United States Space Force as part of the Quasi-Zenith Satellite System Hosted Payload (QZSS-HP)
QZS-6
2015 American resupply spaceflight to the ISS
loading secondary payloads. However, there are certain restrictions included in their contract with NASA that preclude specified hazards on the secondary payloads
SpaceX_CRS-6
European small-lift launch vehicle
December 2014, Vega C was designed to accommodate larger institutional payloads and compete effectively in the commercial launch market. Initially marketed
Vega_C
Transporter and Bandwagon payloads are not public, or don't have a publicly revealed mass. SpaceX has not published a payload mass estimate for this mission
List of Falcon 9 and Falcon Heavy launches (2020–2022)
List_of_Falcon_9_and_Falcon_Heavy_launches_(2020–2022)
2003 computer worm
Capitalism Sucks!, Communism Sucks. KILLERGUATE. After carrying out the above payload, the virus hangs the operating system, requiring users to perform a Hard
Gruel_(computer_worm)
First version of the SpaceX medium-lift launch vehicle
all successfully delivered their primary payload, though an anomaly led to the loss of one secondary payload. The Falcon 9 v1.0 first stage was used on
Falcon_9_v1.0
NASA mission intended to demonstrate a solar sail constructed by LGarde
to the Moon. Sunjammer was slated to launch in January 2015 as the secondary payload of a SpaceX Falcon 9 launch vehicle, along with the Earth observation
Sunjammer_(spacecraft)
Chinese lunar probe (2014–2020)
February 2022. Manfred Memorial Moon Mission (4M) – Official website for secondary payload at Chang'e 5-T1 Pocket Spacecraft – Space exploration for everyone
Chang'e_5-T1
Miniature satellite in 10 cm cube modules
deployed into orbit from the International Space Station, or launched as secondary payloads on a launch vehicle. As of January 2026[update], the Nanosatellite
CubeSat
Second version of the SpaceX medium-lift launch vehicle
million for current non-SpaceX launches. Falcon 9 payload services include secondary and tertiary payload connection via an ESPA-ring, the same interstage
Falcon_9_v1.1
delivered its cargo to the International Space Station (ISS), but a secondary payload was stranded in a lower-than-planned orbit). The active version of
List of Falcon 9 and Falcon Heavy launches
List_of_Falcon_9_and_Falcon_Heavy_launches
Cancelled science mission to Mars featuring semi-hard landing strategy
the ratio of the payload mass to the overall mass is optimized, and more mass and volume resources are spared for the science payload. The MetNet lander's
Mars_MetNet
Expendable launch system program of the United States Space Force
next generation NSSL launch vehicles until at least 2030. See EELV Secondary Payload Adapter (ESPA rings with radial ports) Since 2019 there have been
National Security Space Launch
National_Security_Space_Launch
1983 Space Shuttle Challenger mission
geostationary orbit. The secondary payload, replacing a delayed NASA communications satellite, was a four-metric-ton dummy payload, intended to test the
STS-8
US DoD space access program
spaceflight via the International Space Station (ISS), piggybacks, secondary payloads and dedicated launch services. STP has actually been in existence
Space_Test_Program
hosted payloads, QZS-7 hosts a secondary payload from the United States Space Force as part of the Quasi-Zenith Satellite System Hosted Payload (QZSS-HP)
QZS-7
Series of european weather satellites
to the main optical payload SEVIRI (Spinning Enhanced Visible and Infrared Imager), Meteosat-8 also carries the secondary payload GERB (Geostationary
Meteosat
European CubeSat satellite mission
receiving Galileo and GPS signals reflected from Earth surface. The secondary payload is a radiation monitor. The satellite was launched in October 2023
PRETTY_(satellite)
Form of online advertising
JavaScript that uses cross-site scripting (XSS), sometimes with a secondary payload that uses Adobe Flash. They can also be generated by other vulnerabilities/security
Pop-up_ad
Commercial satellite dispenser
CubeSats. SHERPA builds upon the capabilities of the Spaceflight Secondary Payload System (SSPS) by incorporating propulsion and power generation subsystems
SHERPA_(space_tug)
Chinese deep-space crewed spacecraft in development
two payloads: a Mengzhou prototype as the primary payload and a demonstration flexible inflatable cargo re-entry capsule as a secondary payload. The
Mengzhou_(spacecraft)
1988 American crewed spaceflight
"Mike" Lounge, George D. "Pinky" Nelson and David C. Hilmers. The primary payload for the STS-26 mission, TDRS-C, was successfully deployed, and 11 scheduled
STS-26
American aerospace company
Washington, that specializes in organizing rideshare space launches of secondary payloads. It was part of Spaceflight Industries until June 2020. Spaceflight
Spaceflight,_Inc.
OHB AG, Launched on 23 October 2014 with the mission flying as a secondary payload aboard CNSA's Chang'e 5-T1 spacecraft. The Moon has also been visited
List_of_missions_to_the_Moon
Space propulsion method using Sun radiation
configuration is a 3U CubeSat format, and as of 2015, it was scheduled as a secondary payload for a 2016 launch on the first SpaceX Falcon Heavy launch. "LightSail-1"
Solar_sail
First astronomical CubeSat funded by Taiwan Space Agency
(GTM) is the first space astronomical telescope of Taiwan. It is a secondary payload on board Formosat-8B (FS-8B), which is a remote-sensing satellite
Gamma-ray_Transients_Monitor
previously announced goal of 100 Falcon launches in the year. The company's payload delivery capacity also rose, with approximately 1,200 tonnes (2,600,000 lb)
List of Falcon 9 and Falcon Heavy launches (2023)
List_of_Falcon_9_and_Falcon_Heavy_launches_(2023)
Amateur radio satellite
rectangular box (30 x 25 x 12 cm) weighing 10 kg., was launched as a secondary payload (ballast) for Corona 9029, also known as Discoverer 36, the eighth
OSCAR_1
Spaces rocketry and holding company
operation of an unofficial 'star registry'. Though today it buys secondary payload space on third-party commercial rockets such as Falcon 9, Taurus,
Space_Services_Inc.
American reconnaissance satellite
the 501 configuration, along with twelve CubeSats being carried as secondary payloads. Five of the CubeSats were a part of NASA ELaNa II manifest. Space
USA-247
Application of internet security to web browsers
use JavaScript, sometimes with cross-site scripting (XSS) with a secondary payload using Adobe Flash. Security exploits can also take advantage of vulnerabilities
Browser_security
Space vehicle launch complex on Cape Canaveral Space Force Station, Florida
two pads, while the crew would lift off from LC-34 and intercept the two payloads in low Earth orbit. Despite NASA opting for a Lunar orbit rendezvous (LOR)
Cape Canaveral Space Launch Complex 37
Cape_Canaveral_Space_Launch_Complex_37
first space telescope, the Gamma-ray Transients Monitor (GTM), as a secondary payload on the Formosat-8B satellite, in December. On 15 May, NASA's Psyche
2026_in_spaceflight
Space technology using tethers
gauge copper wire. The mission was launched on 26 June 1993, as the secondary payload on a Delta II rocket. The total experiment lasted approximately seven
Space_tether_missions
Two-stage small satellite launch rocket
of ridesharing payloads and secondary payloads. These smaller satellites can have an orbit that is not determined by a larger payload and can launch on
Firefly_Alpha
Lunar Impactor
structural capabilities of the Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) ring used to attach LRO to the Centaur upper-stage
LCROSS
Spacecraft
collecting surface spectroscopy and thermography. It was launched as a secondary payload on the Artemis 1 mission on 16 November 2022. LunIR is a technology
LunIR
Chinese heavy lift rocket
declared the launch a success after the payloads were placed in low Earth orbit. The flight's secondary payload, the experimental cargo return craft, malfunctioned
Long_March_5
NASA program
exploration missions. These spacecraft are intended to launch as secondary payloads on other missions and are riskier than Discovery or New Frontiers
Small Innovative Missions for Planetary Exploration
Small_Innovative_Missions_for_Planetary_Exploration
LEO solar sailing demo project
the second spacecraft named LightSail 2. LightSail 2 launched as a secondary payload on the Space Test Program (STP-2) on a Falcon Heavy launch vehicle
LightSail
Program in 1969. MoonLIGHT was planned to be launched in July 2020 as a secondary payload on the MX-1E lunar lander built by the private company Moon Express
MoonLIGHT
Partially reusable super-heavy-lift launch vehicle by SpaceX
(GPIM) was a payload; it is a project partly developed by the U.S. Air Force to demonstrate a less-toxic propellant. Another secondary payload is the miniaturized
Falcon_Heavy
2014 American resupply spaceflight to the ISS
the primary payload, a Dragon cargo capsule resupply space transport mission to the ISS for NASA, SpaceX deployed five secondary payload CubeSats on the
SpaceX_CRS-3
speed. LOFTID was launched on an Atlas V 401 in November 2022 as a secondary payload, along with the JPSS-2 weather satellite. It deployed successfully
Low-Earth Orbit Flight Test of an Inflatable Decelerator
Low-Earth_Orbit_Flight_Test_of_an_Inflatable_Decelerator
2013 American test spaceflight
Industries Inc. CubeSat nanosatellites were deployed from the dummy payload. The secondary payloads were four CubeSats that were deployed from the CMS. Three of
Antares_A-ONE
Space burial business
space company Space Services Inc. The company purchases launches as a secondary payload on various launch vehicles, and launches samples of a person's cremated
Celestis
2014 American resupply spaceflight to the ISS
to the ISS as part of the payload. SpaceX has primary control over manifesting, scheduling and loading secondary payloads. However, there are certain
SpaceX_CRS-4
1992 American crewed spaceflight for the Department of Defense
carried a classified primary payload (DOD-1) for the United States Department of Defense (DoD), two unclassified secondary payloads and nine unclassified middeck
STS-53
Cancelled NASA mission for asteroid fly-bys
NASA's SIMPLEx program and was expected to be launched in 2022 as a secondary payload on Falcon Heavy together with the Psyche spacecraft, but it was removed
Janus_(spacecraft)
South African amateur radio satellite
orbited as a secondary payload. The primary payload of the launch was ARGOS, and the Danish Orsted satellite was another secondary payload. Planned lifetime:
SUNSAT
Family of Low Earth orbit communications satellites
satellites was launched on 8 October 2012 as secondary payload on a SpaceX Falcon 9 v1.0 flight. The primary payload was for NASA to the International Space
Orbcomm_(satellite)
launched by an H-IIA rocket, flying in the 202 configuration, as a secondary payload aboard the launch of the GPM Core Observatory on 27 February 2014
STARS-II
Satellite testing tungsten metal dampening
secondary payload on the final flight of the Delta II launch vehicle as part of the ELaNa-18 ride-share mission with NASA's ICESat-2 primary payload.
Damping and Vibrations Experiment
Damping_and_Vibrations_Experiment
reason Ref(s) Janus 2023 Dual asteroids probe Was expected to be a secondary payload on the Psyche launch. After the delay, it was assessed that Janus
List of proposed Solar System probes
List_of_proposed_Solar_System_probes
a set of three satellites launched on Atlas rockets as secondary payloads, the primary payload consisting of NOSS Satellites. LIPS I, launched on 8 December
Living Plume Shield (satellite)
Living_Plume_Shield_(satellite)
National university in Japan
amateur radio capabilities. STARS was launched 23 January 2009 as a secondary payload aboard H-IIA flight 15, which also launched GOSAT. It successfully
Kagawa_University
Korean deep-space CubeSat
by South Korea's Korea AeroSpace Administration (KASA) as a rideshare payload on the Artemis II mission. The probe's primary mission was to characterize
K-RadCube
Follow up to CUTE-1.7 + APD nanosatellite
of the CanX-6 satellite - also flying aboard the launch vehicle as secondary payloads. The launch took place at 03:53:51 UTC on 28 April 2008, with the
CUTE-1.7_+_APD_II
One transportation unit carried on another
transportation systems, a smaller satellite that is carried as a secondary payload on a launch is said to be "piggybacked" on the main launch. It is
Piggyback_(transportation)
NASA/ASI cubesat
opportunity to launch several low-mass cubesats along with Orion as secondary payloads. In September 2015, NASA opened an invitation for proposals of 6U
ArgoMoon
Family of encrypting ransomware discovered in 2016
evolution". Another variant of Petya discovered in May 2016 contained a secondary payload used if the malware cannot achieve administrator-level access. The
Petya_(malware_family)
Japanese interplanetary spacecraft
20 May 2010. It was being launched as a secondary payload aboard an H-IIA 202 rocket, with the primary payload being the Akatsuki spacecraft bound for
Shin'en_(spacecraft)
Japanese amateur CubeSat picosatellite
The Space Engineering EDucation Satellite 2 (SEEDS-2 or OSCAR 66) is a Japanese amateur CubeSat nanosatellite, built and operated by Nihon University.
SEEDS-2
Constellation of small Earth observation satellites
in Sweden. The other 13 satellites are manufactured by SSL, the optical payloads are built by L3 Technologies, and the satellite thrusters are provided
SkySat
Indian experimental communication and navigation satellite
multi-channel, Ka-band, bent pipe and regenerative transponder, and a navigation payload in the C, L1, and L5 bands. Designed to guide civil and military aircraft
GSAT-4
Launching of cremated human remains into space
private company Celestis has conducted numerous space burials flying as secondary payloads. The first space burial occurred in 1992 when the NASA Space Shuttle
Space_burial
Nanosatellite launched in 2022
deposits on the Moon for future exploitation. It was launched as a secondary payload mission on Artemis 1 (formerly known as Exploration Mission 1), the
Lunar_IceCube
Satellite of NASA's Earth Observing System program
launched on 20 December 1999 from Vandenberg Air Force Base as the secondary payload on the Taurus launch vehicle that launched KOMPSAT. It was placed
ACRIMSAT
Soviet technology demonstration satellite
orientation system. It also carried a scientific research package as a secondary payload, which was used to study cosmic rays. It was launched aboard a Kosmos-2I
Kosmos_31
US experimental communications satellite
Earth Escape Explorer (CU-E3) is a nanosatellite of the 6U CubeSat format that will demonstrate long-distance communications while in heliocentric orbit
Earth_Escape_Explorer
Space technology development program
demonstrate a passive deorbiting. TechEdSat-4 was launched as a secondary cargo payload on the Cygnus CRS Orb-2 ISS resupply mission. The launch vehicle
TechEdSat
NASA nanosatellite with 2 astrobiology experiments on board
Ames Research Center, the spacecraft was successfully launched as a secondary payload on STP-S26 led by the Space Test Program of the United States Air
O/OREOS
German deep-space cubesat
the German company Neurospace launched on 1 April 2026 as a rideshare payload on NASA's Artemis II mission. The satellite was designed to test lunar
Tacheles_(satellite)
Solar sail spacecraft
continue working to initiate contact with NEA Scout. NEA Scout is a secondary payload for Artemis I and is a completely independent spacecraft. Orion is
Near-Earth_Asteroid_Scout
NASA satellite to study characteristics of water on the Moon
water cycle. Lunar Trailblazer was launched on 27 February 2025, as a secondary payload on the IM-2 mission. The Principal Investigator (PI) of the mission
Lunar_Trailblazer
Japanese space probe (2014–2015)
due to the malfunction of the ion thruster. PROCYON was launched as secondary payload together with the Hayabusa2 asteroid landing probe. After separation
PROCYON
Planned space telescope
small mass and volume, 160 kg and <1m3, allows a launch to GEO as a secondary payload. The ULTRASAT initiative was born in 2010 in discussions between Weizmann
ULTRASAT
Japanese satellite
Super Low Altitude Test Satellite (SLATS) or Tsubame was a JAXA satellite intended to demonstrate operations in very low Earth orbit (VLEO, below 200 km)
Super Low Altitude Test Satellite
Super_Low_Altitude_Test_Satellite
Topics referred to by the same term
Elrad may refer to: Earth-Limb Radiance Experiment, a secondary payload of the 26th Space Shuttle mission, STS-26 elrad (magazine), a discontinued semi-professional
Elrad
Small satellite
cube with mass of 50 kg) developed by JAXA. It was launched as a secondary payload on the Shizuku mission on 17 May 2012 UTC. In 2019, its ownership
SDS-4
Pair of spacecraft
Cislunar Explorers is a pair of spacecraft that will show the viability of water electrolysis propulsion and interplanetary optical navigation to orbit
Cislunar_Explorers
Launches of American rocket family
Retrieved 10 November 2022. Foust, Jeff (10 March 2020). "NOAA finalizes secondary payload for JPSS-2 launch". SpaceNews. Retrieved 29 April 2021. "United Launch
List of Atlas launches (2020–2029)
List_of_Atlas_launches_(2020–2029)
Topics referred to by the same term
satellite Lunar IceCube, a NASA nanosatellite mission launched as a secondary payload on Artemis 1. Ice Cube Curling Center, the curling venue at the 2014
Ice_cube_(disambiguation)
Proposed robotic semi-buoyant flying wing aircraft to study Venus's atmosphere
during atmospheric entry. The aircraft is proposed to be launched as a secondary payload on another spacecraft mission to Venus, probably on Russia's Venera-D
Venus Atmospheric Maneuverable Platform
Venus_Atmospheric_Maneuverable_Platform
Lunar orbiter by NASA
NASA's Advanced Exploration Systems (AES) for launch in 2022 as a secondary payload for the Artemis 1 mission, though it missed the integration window
Lunar_Flashlight
American space technology company
miniature satellites called Doves that are then delivered into orbit as secondary payloads on other rocket launch missions. Each Dove is equipped with a high-powered
Planet_Labs
Balloon released into the stratosphere, most commonly weather balloons
secondary payloads on ARHAB flights. One reason BalloonSats are simple is that they do not require the inclusion of tracking equipment; as secondary payloads
High-altitude_balloon
European heavy-lift space launch vehicle (1996–2023)
eight secondary payloads, usually small experiment packages or minisatellites, could be carried with an ASAP (Ariane Structure for Auxiliary Payloads) platform
Ariane_5
related instruments as secondary payloads. The main objective of these satellites are not Space Science. For example, an X-ray payload was flown aboard Aryabhata
List_of_ISRO_missions
Amateur radio satellite
for Aerospace Technology and AMSAT, and on January 22, 1990, as a secondary payload, along with the SPOT 2 Earth observation satellite with an Ariane
Weber-OSCAR_18
German remote sensing cubesat
the Indian Space Research Organisation, aboard a PSLV rocket as a secondary payload to the CartoSat-2A primary spacecraft on 28 April 2008. It was launched
Compass-1
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