NGTS-1b
{{Short description|Hot Jupiter exoplanet in the constellation Columba}}
{{use dmy dates|date=November 2017}}
{{Infobox planet
| name = NGTS-1b
| image = NGTS-1 b illustration.jpg
| caption = artist's concept of exoplanet NGTS-1b
| discoverer = Next-Generation Transit Survey
| discovered = 2017
| discovery_method = NGTS telescopes together with EulerCam photometric and HARPS spectroscopy followups.
| apsis = astron
| semimajor = {{convert|0.0326|AU|km|abbr=on}}{{cite encyclopedia |author=Staff |title=Planet NGTS-1 b |url=https://exoplanet.eu/catalog/ngts_1_b--6660/ |date=2017 |encyclopedia=Extrasolar Planets Encyclopaedia |access-date=1 November 2017 }}
| period = 2.6473 JD d
| star = NGTS-1
| mean_radius = 1.33 {{Jupiter radius|link=y}}
| mass = 0.812 {{Jupiter mass|link=y}}
| single_temperature = 790.0 K
}}
NGTS-1b is a confirmed hot Jupiter-sized extrasolar planet orbiting NGTS-1, a red dwarf star about half the mass and radius of the Sun, every 2.65 days.{{cite web |last=Griffini |first=Andrew |title=Huge 'monster' planet could challenge scientists' theory of how worlds form |url=https://timesofindia.indiatimes.com/home/science/huge-monster-planet-could-challenge-scientists-theory-of-how-worlds-form/articleshow/61456042.cms |date=2 November 2017 |work=The Times of India |accessdate=2 November 2017 }} The NGTS-1 system is about 716 light-years from Earth in the Columba constellation.{{Cite journal|author=Bayliss, Danile |display-authors=etal |title=NGTS-1b: A hot Jupiter transiting an M-dwarf |journal=Monthly Notices of the Royal Astronomical Society |volume=475 |issue=4 |pages=4467–4475 |arxiv=1710.11099 |date=31 October 2017|doi=10.1093/mnras/stx2778 |doi-access=free |bibcode=2018MNRAS.475.4467B |s2cid=39357327 }}{{cite web |last=Lewin |first=Sarah |title=Monster Planet, Tiny Star: Record-Breaking Duo Puzzles Astronomers |url=https://www.space.com/38625-monster-planet-circles-tiny-star.html |date=31 October 2017 |work=Space.com |accessdate=1 November 2017 }}{{cite web |author=Staff |title='Monster' planet discovery challenges formation theory |url=https://phys.org/news/2017-10-monster-planet-discovery-formation-theory.html |date=31 October 2017 |work=Phys.org |accessdate=1 November 2017 }}
Discovery
The exoplanet, NGTS-1b, was discovered by the Next-Generation Transit Survey. Daniel Bayliss, of the University of Warwick, and lead author of the study describing the discovery of NGTS-1b, stated, "The discovery of NGTS-1b was a complete surprise to us—such massive planets were not thought to exist around such small stars—importantly, our challenge now is to find out how common these types of planets are in the Galaxy, and with the new Next-Generation Transit Survey facility we are well-placed to do just that."
Characteristics
=Mass, radius and temperature=
NGTS-1b is a hot Jupiter-sized gas giant exoplanet that has a mass of 0.812 MJ and a radius of 1.33 RJ, where MJ and RJ are the mass and radius of Jupiter.
=Host star=
{{main|NGTS-1}}
The planet orbits an M0.5 dwarf star about half the mass ({{solar mass|0.617}}) and radius ({{solar radius|0.573}}) of the Sun.
= Orbit =
NGTS-1b orbits about {{convert|4.5|e6km|e6mi|abbr=unit}} from the host star every 2.6473 Earth-days.{{cite web |last=Dvorsky |first=George |title=This Tiny Star Hosts a Planet Nearly the Size of Jupiter |url=https://gizmodo.com/this-tiny-star-hosts-a-planet-nearly-the-size-of-jupite-1820017394 |date=31 October 2017 |work=Gizmodo |accessdate=1 November 2017 }}
See also
References
{{reflist}}
External links
- [https://www.eso.org/sci/publications/messenger/archive/no.165-sep16/messenger-no165-10-12.pdf The Next Generation Transit Survey Becomes Operational at Paranal], ESO archive, The Messenger 165 – September 2016
{{2017 in space}}
{{portal bar|Astronomy|}}
{{Sky|05|30|52.0|-|36|37|51|600}}
{{DEFAULTSORT:NGTS-1b}}
Category:Columba (constellation)
Category:Exoplanets discovered in 2017