MASCARA
MASCARA (Multi-site All-Sky CAmeRA) is an exoplanet experiment by Leiden University. It has two stations, one in each hemisphere, each of which use cameras to make short exposure photographs of most of the visible sky to observe stars to a magnitude of 8.4. The Northern Hemisphere station at Roque de los Muchachos Observatory, La Palma, started observations in February 2015.
Also recorded as Multi-site All-Sky CAmeRA
MASCARA
ESO/G. J. Talens · ESO website · CC BY 4.0
- Region
- MASCARA is situated in Spain.
Reference Check
Propose documentary evidence for MASCARA. A contribution is never written directly as fact: identity, source, rights and evidence gates still decide.
Sign in to contribute
World of VALÉORINE
Documentary connections
Only confirmed graph relationships appear here. Images are shown only when their identity and reuse rights both pass the documentary gate.
Documentary evidence
Documentary basis
Authority files
gnd · 10320296-1 · wikidata · Q33129404
In this article
Overview
Overview
The Southern Hemisphere station at La Silla Observatory, Chile, saw first light in July 2017.
Key facts
Key facts
• Illustration — The compact housing of MASCARA at La Silla Observatory
MASCARA-1b
MASCARA-1b
On 17 July 2017, the discovery of MASCARA-1b, a confirmed superjovian exoplanet with a mass 3.7, was reported by the survey team. MASCARA-1b is a hot Jupiter transiting its parent A-type star; its orbit is misaligned with the star's rotation. The planet was found unusually reflective for hot Jupiter with the measured geometric albedo of 0.171 and dayside temperature of 3062 K. Attempts to spectroscopically characterize its composition were failing as in 2022 due to relatively high planetary surface gravity resulting in compact atmosphere.
MASCARA-2b
MASCARA-2b
A second planet, MASCARA-2b, also known as KELT-20b, was also announced in 2017. It is a hot Jupiter orbiting an A-type star. The carbon monoxide, steam and neutral iron detection in the atmosphere of MASCARA-2b was announced in 2022.
MASCARA-4b
MASCARA-4b
A planet MASCARA-4b (also known as HD 85628 Ab) discovery was announced in 2019. It is a hot Jupiter on retrograde and slightly eccentric orbit. The planet is unusually reflective for a hot Jupiter. Hydrogen, sodium, magnesium, calcium and iron emission from planetary atmosphere was detected.
MASCARA-5b
MASCARA-5b
In 2021, a planet MASCARA-5b (more commonly known as TOI-1431 b), is an Ultra-hot Jupiter. Its dayside temperature is 2,700 K (2,427 °C), making it hotter than 40% of stars in our galaxy. The nightside temperature is 2,600 K (2,300 °C).
List of discovered exoplanets
List of discovered exoplanets
• Star — Constellation — Right ascension — Declination — App. mag. — Distance (ly) — Spectral type — Planet — Mass (M J) — Radius (R J) — Orbital period (d) — Semimajor axis (AU) — Orbital eccentricity — Inclination (°) — Discovery year • MASCARA-1 — Equuleus — 8.3 — 188.7 — A8 — b — 3.7 — 1.5 — 2.14878 — 0.043 — 0 — 87 — 2017 • MASCARA-2 — Cygnus — 7.58 — 137 — A2V — b — 3.518 — 1.83 — 3.4741085 — 0.0542 — 0.0 — 86.2 — 2017 • MASCARA-3 — Ursa Major — 8.4 — 96.79 — F5 — b — 5.18 — 1.272 — 5.5514926 — 0.06971 — 89.16 — 83.11 — 2019 • MASCARA-4 — Carina — 86.7 — 171.54 — A3V — b — 3.1 — 1.53 — 2.82406 — 0.047 — 0 — 88.81 — 2019 • MASCARA-5 — Cepheus — 8 — 149.6 — AmC — b — 3.14 — 1.508 — 2.65022 — 0.047 — 0.01 — 80.4 — 2021
Papers
Papers
• G.J.J. Talens et al., The Multi-site All-Sky CAmeRA: Finding transiting exoplanets around bright (m V < 8) stars, accepted for publication in A&A
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
MASCARA is situated in Spain.
Country
MASCARA is situated in Chile.
Country
MASCARA is associated with Spain and Chile.
Country
Literature
Scholarly footprint
A count of publications is evidence of attention, not of standing, and is given here only as a measure.
Text attribution
Licensing
Text attribution
Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article MASCARA, revision 1370783138 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Multi-site All-Sky CAmeRA – Official Website. Leiden Astronomy MASCARA group.
- 2.Eyes Wide Open for MASCARA in Chile – Exoplanet hunter sees first light at ESO's La Silla Observatory. European Southern Observatory.
- 3.Eyes Wide Open for MASCARA in Chile – Exoplanet hunter sees first light at ESO's La Silla Observatory. European Southern Observatory. 19 July 2017.
- 4.Talens, G. J. J. MASCARA-1 b. A hot Jupiter transiting a bright m V = 8.3 A-star in a misaligned orbit. Astronomy & Astrophysics. 606. A73. 2017. 10.1051/0004-6361/201731282.
- 5.Hooton, M. J. Spi-OPS: Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1 b and reveal a hint of dayside reflection. Astronomy & Astrophysics. 658. A75. 2022. 10.1051/0004-6361/202141645.
- 6.Casasayas-Barris, N. Transmission spectroscopy of MASCARA-1b with ESPRESSO: Challenges of overlapping orbital and Doppler tracks. Astronomy & Astrophysics. 664. A121. 2022. 10.1051/0004-6361/202143016.
- 7.Talens, G. J. J. MASCARA-2 b: A hot Jupiter transiting a m V = 7.6 A-star. Astronomy & Astrophysics. A57. 612. 2018. 10.1051/0004-6361/201731512.
- 8.Fu, Guangwei. Strong H 2 O and CO Emission Features in the Spectrum of KELT-20b Driven by Stellar UV Irradiation. The Astrophysical Journal Letters. 925. 1. L3. 2022. 10.3847/2041-8213/ac4968.
- 9.Kasper, David. Unifying High- and Low-resolution Observations to Constrain the Dayside Atmosphere of KELT-20b/MASCARA-2b. The Astronomical Journal. 165. 1. 7. 2023. 10.3847/1538-3881/ac9f40.
- 10.Yan, F. Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b. Astronomy & Astrophysics. 659. A7. 2022. 10.1051/0004-6361/202142395.
- 11.Dorval, P. MASCARA-4 b/BRing-1 b: A retrograde hot Jupiter around a bright A-type star. Astronomy & Astrophysics. 635. A60. 2019. 10.1051/0004-6361/201935611.
- 12.Ahlers, John P. Gravity-darkening Analysis of the Misaligned Hot Jupiter MASCARA-4 B. The Astrophysical Journal. 888. 2. 63. 2019. 10.3847/1538-4357/ab59d0.
- 13.Zhang, Yapeng. Transmission spectroscopy of the ultra-hot Jupiter MASCARA-4 B. Astronomy & Astrophysics. 666. A47. 2022. 10.1051/0004-6361/202244203.
- 14.Scientists uncover a 'hellish' planet so hot it could vaporize most metals. CNET. April 27, 2021.
- 15.'Hellish' new planet discovered. University of Southern Queensland. April 27, 2021.
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
Elsewhere in Scientific instruments
736 published records in this field, each with its sources named.
- Mars Color ImagerTerminology
- Mars Multispectral Imager for Subsurface StudiesTerminology
- Mars Orbiter CameraTerminology
- MarsDialTerminology
- mathematical instrumentTerminology
- Mauritius Radio TelescopeTerminology
- Max Valier SatTerminology
- McMath–Pierce Solar TelescopeTerminology
Best supported in this field
For owners
Own an object connected with MASCARA?
A specialist will read what you send and tell you what the house can establish, what it cannot, and whether the object is suited to sale. There is no charge and no obligation. The object stays with you throughout; nothing is shipped to us unless it is arranged in writing beforehand.