Fast Infrared Exoplanet Spectroscopy Survey Explorer

Fast Infrared Exoplanet Spectroscopy Survey Explorer (FINESSE)

FINESSE would provide uniquely detailed atmospheric information on exoplanets

Mission type| Space observatory
Operator| NASA
Mission duration| 2 years
Start of mission
Launch date| 2023 (proposed[1])
Launch site| Cape Canaveral Air Force Station
Orbital parameters
Reference system| Earth-Sun L2 (heliocentric) orbit
Main spectrometer
Diameter| 70 cm
Wavelengths| Infrared (0.5 - 5 μm)
Resolution| λ/Δλ = 80 - 300

Fast Infrared Exoplanet Spectroscopy Survey Explorer (FINESSE) was a NASA mission proposal for a space observatory operating in the Near-infrared spectrum for the Medium-Class Explorers program. The Principal Investigator was Mark Swain of the Jet Propulsion Laboratory in Pasadena, California.[2]

FINESSE was one of three Medium-Class Explorers (MIDEX) mission concepts that received $2 million to conduct a nine-month mission concept study in August 2017.[3] The mission study was terminated prematurely following the selection by European Space Agency of an identical concept, the ARIEL exoplanet atmosphere survey mission.[4] Had it been selected for implementation, FINESSE would have launched no earlier than 2022 and lasted at least two years. The other two finalist concepts competing with FINESSE were Arcus (an X-ray space observatory) and SPHEREx (a near-infrared space observatory). In February 2019, it was announced that SPHEREx had been selected.[5]

## Contents

* 1 Overview
* 2 Science objectives
* 3 Principle
* 4 References
* 5 Further reading and external links

## Overview

FINESSE would have consisted of a space observatory tasked to study exoplanet atmospheres by spectroscopically surveying over 500 planets outside the Solar System with the goal of gaining understanding of the processes responsible for their composition, and how the Solar System fits into the larger family of planets.[1]

FINESSE was a candidate for NASA's next Explorers program MIDEX mission, and conducted a nine-months-long Phase A study starting from August 2017 to refine its mission concept.[3]

While FINESSE was selected as finalist for the MIDEX mission, NASA also conditionally selected the CASE proposal as an Explorers Program Partner Mission of Opportunity (PMO).[3] FINESSE and CASE share the same Principal Investigator and science team.[6] CASE, or Contribution To ARIEL Spectroscopy of Exoplanets, is a proposal for US participation in the European ARIEL space telescope. An exoplanet atmosphere survey mission, ARIEL is similar to FINESSE both in spacecraft capability and scientific objectives. CASE was selected on the condition that it will only be constructed if ESA selected ARIEL.[3] At the time this was announced, it was still uncertain whether ARIEL will be ultimately selected or not. NASA had stated that if ARIEL and CASE are selected, they would not select FINESSE as the next MIDEX mission.[6]

In March 2018, ARIEL was selected by ESA for the fourth Cosmic Vision Medium class mission (M4).[7] Work on FINESSE was terminated as a result.[4] Although FINESSE did not ultimately receive a flight opportunity, its goals will likely be achieved by the 2028 ARIEL mission.

## Science objectives

* Determine key aspects of the planet formation process. FINESSE would obtain the atmospheric composition measurements of metallicity and carbon/oxygen ratio.[1]
* Determine key factors that establish planetary climate. FINESSE measurements would determine planetary energy budgets from the dayside to the nightside.[1]

## Principle

FINESSE would have measured the atmospheric light spectra of exoplanets transiting or eclipsing their parent star.[1] The proposed spectrometer functions in the infrared (0.5-5.0 μm). It would have used a 75 cm diameter primary mirror.[1]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 FINESSE Mission to 500+ transiting exoplanets. NASA JPL. Accesses 1 October 2017
2. ↑ NASA - NASA Selects Science Investigations For Concept Studies, 29 September 2011.
3. ↑ 3.0 3.1 3.2 3.3 "NASA Selects Proposals to Study Galaxies, Stars, Planets" (in en). 9 August 2017. https://www.nasa.gov/press-release/nasa-selects-proposals-to-study-galaxies-stars-planets.
4. ↑ 4.0 4.1 Hertz, Paul (22 October 2018). "NASA Astrophysics Update" (PDF). NASA. https://smd-prod.s3.amazonaws.com/science-red/s3fs-public/atoms/files/Hertz_APAC_Oct2018_V5.pdf#page=79.
5. ↑ "NASA Selects New Mission to Explore Origins of Universe" (Press release). NASA. 13 February 2019. Retrieved 13 February 2019.
6. ↑ 6.0 6.1 "FINESSE and ARIEL + CASE: Dedicated Transit Spectroscopy Missions for the Post-TESS Era". NASA Cosmic Origins Program Analysis Group (COPAG). https://cor.gsfc.nasa.gov/copag/AAS_Jan2018/bean_finesse_case.pdf.
7. ↑ "ESA's next science mission to focus on nature of exoplanets" (in en-GB). European Space Agency. 20 March 2018. http://sci.esa.int/cosmic-vision/59796-esa-s-next-science-mission-to-focus-on-nature-of-exoplanets/.

## Further reading and external links

* Old FINESSE website (inactive)
* Swain, M. R. (2010). Finesse - A New Mission Concept For Exoplanet Spectroscopy. American Astronomical Society. Bulletin of the American Astronomical Society. 42, p. 1064.
* Space.com - AAS Dispatch: Proposed Space Mission Would Probe Alien Atmospheres
* What is FINESSE ? - video

* v
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Explorers Program

List of Explorers Program missions

Missions|

| 1958–1992|

* Explorer 1
* 2†
* 3
* 4
* 5†
* S-1†
* 6 (S-2)
* 7 (S-1A)
* S-46A†
* 8
* S-56†
* 9 (S-56A)
* S-45†
* 10
* 11 (S-15)
* S-45A†
* S-55†
* 12 (EPE-A)
* 13 (S-55A)
* 14 (EPE-B)
* 15 (EPE-C)
* 16 (S-55B)
* 17 (AE-A)
* 18 (IMP-A)
* 19 (AD-A)
* S-66A (BE-A)†
* 20 (IE-A)
* 21 (IMP-B)
* 22 (BE-B)
* 23 (S-55C)
* 24 (AD-B)
* 25 (Injun 4, IE-B)
* 26 (EPE-D)
* 27 (BE-C)
* 28 (IMP-C)
* 29 (GEOS-A)
* 30 (Solrad 8)
* 31 (DME-A)
* 32 (AE-B)
* 33 (IMP-D)
* 34 (IMP-F)
* 35 (IMP-E)
* 36 (GEOS-B)
* 37 (Solrad 9)
* 38 (RAE-A)
* 39 (AD-C)
* 40 (Injun 5)
* 41 (IMP-G)
* 42 (Uhuru, SAS-A)
* 43 (IMP-H)
* 44 (Solrad 10)
* 45 (SSS-A)
* 46 (MTS)
* 47 (IMP-I)
* 48 (SAS-B)
* 49 (RAE-B)
* 50 (IMP-J)
* 51 (AE-C)
* 52 (Hawkeye 1)
* 53 (SAS-C)
* 54 (AE-D)
* 55 (AE-E)
* DADE-A†
* DADE-B†
* 56 (ISEE-1)
* 57 (IUE)
* 58 (HCMM)
* 59 (ICE)
* 60 (SAGE)
* 61 (Magsat)
* 62 (DE-1)
* 63 (DE-2)
* 64 (SME)
* 65 (CCE)
* 66 (COBE)
* 67 (EUVE)

|

MIDEX|

* 69 (RXTE)
* 71 (ACE)
* 77 (FUSE)
* 78 (IMAGE)
* 80 (WMAP)
* FAME
* 84 (Swift)
* 85–89 (THEMIS)
* 92 (WISE)
* 95 (TESS)
* 96 (ICON)
* SPHEREx

SMEX|

* 68 (SAMPEX)
* 70 (FAST)
* 73 (TRACE)
* 74 (SWAS)
* 75 (WIRE)†
* 81 (RHESSI)
* 83 (GALEX)
* 90 (AIM)
* 91 (IBEX)
* 93 (NuSTAR)
* 94 (IRIS)
* GEMS
* IXPE
* PUNCH
* TRACERS

UNEX/MO/I|

* HETE-1†
* 72 (SNOE)
* 76 (TERRIERS)†
* 79 (HETE-2)
* INTEGRAL
* 82 (CHIPSat)
* CINDI
* Suzaku
* TWINS
* Hitomi†
* NICER
* GOLD
* XRISM
* GUSTO
* CASE

Proposals|

| Proposals|

* FINESSE
* Arcus
* OHMIC
* ASTRE
* EXCEDE

|

* Green titles indicates active current missions
* Grey titles indicates cancelled missions
* Italics indicate missions yet to launch
* Symbol † indicates failure en route or before intended mission data returned

* v
* t
* e

Exoplanet search projects

* Exoplanetology
* Exoplanet

Ground-based|

* AAPS
* APF
* CORALIE
* EAPSNet
* ELODIE
* EPICS
* ESPRESSO
* FINDS Exo-Earths
* Geneva
* HARPS
* HARPS-N
* GPI
* HATNet
* HEK
* HiCIAO
* HIRES
* KELT
* LCES
* Magellan
* MARVELS
* MASCARA
* MEarth
* MicroFUN
* MINERVA
* Australis
* MOA
* N2K
* NGTS
* NESSI
* OGLE
* OPSP
* PlanetPol
* Project 1640
* PARAS
* SEEDS
* SETI
* SOPHIE
* SPECULOOS
* SPHERE
* SuperWASP
* Systemic
* TrES
* XO Telescope
* ZIMPOL/CHEOPS

Space missions|

| Past|

* MOST (2003–2019)
* SWEEPS using HST (2006)
* CoRoT (2006–2013)
* EPOXI using Deep Impact (2008–2013)
* Kepler (2009–2018)
* detected exoplanets

|

Current|

* Gaia (2013–present)
* ASTERIA (2017–present)
* TESS (2018–present)

Planned|

* CHEOPS (2019)
* James Webb Space Telescope (2021)
* PLATO (2026)
* ARIEL (2028)
* WFIRST (mid-2020s)

Proposed|

* ATLAST
* EXCEDE
* HabEx
* HDST
* LUVOIR
* Nautilus Deep Space Observatory
* New Worlds Mission
* OST
* PEGASE

Cancelled|

* Darwin
* EChO
* Eddington
* Space Interferometry Mission
* Terrestrial Planet Finder

* Detection methods
* Discoveries of exoplanets
* Lists of exoplanets
* nearest

* v
* t
* e

Space observatories

Operating|

* AGILE (since 2007)
* AMS-02 (since 2011)
* Aoi (since 2018)
* ASTERIA (since 2017)
* Astrosat (since 2015)
* BRITE constellation (since 2013)
* CALET (since 2015)
* Chandra (AXAF) (since 1999)
* DAMPE (since 2015)
* Fermi (since 2008)
* Gaia (since 2013)
* HXMT (Insight) (since 2017)
* Hinode (Solar-B) (since 2006)
* HiRISE (since 2005)
* Hisaki (SPRINT-A) (since 2013)
* Hubble (since 1990)
* INTEGRAL (since 2002)
* IBEX (since 2008)
* IRIS (since 2013)
* ISS-CREAM (since 2017)
* MAXI (since 2009)
* Mikhailo Lomonosov (since 2016)
* Mini-EUSO (since 2019)
* NCLE (since 2018)
* NEOSSat (since 2013)
* NICER (since 2017)
* NuSTAR (since 2012)
* Odin (since 2001)
* SDO (since 2010)
* SOHO (since 1995)
* SOLAR (since 2008)
* Spektr-RG (since 2019)
* Spitzer (since 2003)
* STEREO (since 2006)
* Swift (since 2004)
* TESS (since 2018)
* WISE (since 2009)
* XMM-Newton (since 1999)

Planned|

* CHEOPS (2019)
* iWF-MAXI (2019)
* Astro-1 Telescope (2020)
* ILO-1 (2020)
* LUCI (2020)
* Nano-JASMINE (2020)
* ORBIS (2020)
* Solar Orbiter (SolO) (2020)
* IXPE (2021)
* James Webb (JWST) (2021)
* LORD (2021)
* SVOM (2021)
* XPoSat (2021)
* Euclid (2022)
* Space Solar Telescope (2022)
* XRISM (2022)
* Xuntian (2022)
* K-EUSO (2023)
* Solar-C (2023)
* SPHEREx (2023)
* Small-JASMINE (2024)
* Near-Earth Object Surveillance Mission (2025+)
* Spektr-UV (2025)
* WFIRST (2025+)
* PLATO (2026)
* LiteBIRD (2027)
* ARIEL (2028)
* Spektr-M (2030+)
* ATHENA (2031)
* LISA (2034)

Proposed|

* Arcus
* AstroSat-2
* EXCEDE
* Fresnel Imager
* FOCAL
* HabEx
* Hibari
* Hypertelescope
* JEM-EUSO
* LUVOIR
* ATLAST
* HDST
* Lynx
* Nautilus Deep Space Observatory
* New Worlds Mission
* NRO donation to NASA
* OST
* PhoENiX
* Solar-D
* SPICA
* THEIA
* THESEUS

Retired|

* Akari (Astro-F) (2006–2011)
* ALEXIS (1993–2005)
* Alouette 1 (1962–1972)
* Ariel 1 (1962, 1964)
* Ariel 2 (1964)
* Ariel 3 (1967–1969)
* Ariel 4 (1971–1972)
* Ariel 5 (1974–1980)
* Ariel 6 (1979–1982)
* ATM (1973–1974)
* ASCA (Astro-D) (1993–2000)
* Astro-1 (1990)
* BBXRT
* HUT
* Astro-2 (HUT) (1995)
* Astron (1983–1989)
* ANS (1974–1976)
* BeppoSAX (1996–2003)
* CHIPSat (2003–2008)
* Compton (CGRO) (1991–2000)
* CoRoT (2006–2013)
* Cos-B (1975–1982)
* COBE (1989–1993)
* DXS (1993)
* EPOCh (2008)
* EPOXI (2010)
* Explorer 11 (1961)
* EXOSAT (1983–1986)
* EUVE (1992–2001)
* FUSE (1999–2007)
* Kvant-1 (1987–2001)
* GALEX (2003–2013)
* Gamma (1990–1992)
* Ginga (Astro-C) (1987–1991)
* Granat (1989–1998)
* Hakucho (CORSA-b) (1979–1985)
* HALCA (MUSES-B) (1997–2005)
* HEAO-1 (1977–1979)
* Herschel (2009–2013)
* Hinotori (Astro-A) (1981–1991)
* HEAO-2 (Einstein Obs.) (1978–1982)
* HEAO-3 (1979–1981)
* HETE-2 (2000–2008)
* Hipparcos (1989–1993)
* IUE (1978–1996)
* IRAS (1983)
* IRTS (1995–1996)
* ISO (1996–1998)
* IXAE (1996–2004)
* Kepler (2009–2018)
* Kristall (1990–2001)
* LEGRI (1997–2002)
* LISA Pathfinder (2015–2017)
* MOST (2003–2019)
* MSX (1996–1997)
* OAO-2 (1968–1973)
* OAO-3 (Copernicus) (1972–1981)
* Orbiting Solar Observatory
* OSO 1
* OSO 2/OSO B
* OSO 3
* OSO 4
* OSO 5
* OSO 6
* OSO 7
* OSO 8
* Orion 1 (1971)
* Orion 2 (1973)
* PAMELA (2006–2016)
* PicSat (2018)
* Planck (2009–2013)
* RELIKT-1 (1983–1984)
* R/HESSI (2002–2018)
* ROSAT (1990–1999)
* RXTE (1995–2012)
* SAMPEX (1992–2004)
* SAS-B (1972–1973)
* SAS-C (1975–1979)
* Solwind (1979–1985)
* Spektr-R (2011–2019)
* Suzaku (Astro-EII) (2005–2015)
* Taiyo (SRATS) (1975–1980)
* Tenma (Astro-B) (1983–1985)
* Uhuru (1970–1973)
* Vanguard 3 (1959)
* WMAP (2001–2010)
* Yokoh (Solar-A) (1991–2001)

Hibernating
(Mission completed)|

* SWAS (1998–2005)
* TRACE (1998–2010)

Lost|

* OAO-1 (1966)
* OAO-B (1970)
* CORSA (1976)
* OSO C (1965)
* ABRIXAS (1999)
* HETE-1 (1996)
* WIRE (1999)
* Astro-E (2000)
* Tsubame (2014–2015)
* Hitomi (Astro-H) (2016)

Cancelled|

* AOSO
* Astro-G
* Constellation-X
* Darwin
* Destiny
* EChO
* Eddington
* FAME
* FINESSE
* GEMS
* HOP
* IXO
* JDEM
* LOFT
* OSO J
* OSO K
* Sentinel
* SIM & SIMlite
* SNAP
* SPOrt
* TAUVEX
* TPF
* XEUS
* XIPE

See also|

* Great Observatories program
* List of space telescopes
* List of proposed space observatories
* List of X-ray space telescopes

* Category

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*[MIDEX]: Medium-Class Explorers
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