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| {{Infobox planet | {{Infobox planet | ||
| | name = KOI-4878.01 | | name = KOI-4878.01 | ||
| <!-- DISCOVERY -->| discovery_site = ] | <!-- DISCOVERY -->| discovery_site = ] | ||
| | discovered = 2015 | | discovered = 2015 | ||
| | discovery_method = Transit | | discovery_method = Transit | ||
| Line 11: | Line 11: | ||
| | semimajor = {{convert|1.125|AU|km|abbr=on}} | | semimajor = {{convert|1.125|AU|km|abbr=on}} | ||
| | period = 449.015±0.021 ] | | period = 449.015±0.021 ] | ||
| | star = ] | | star = ] | ||
| | mean_radius = 1.05 {{Earth radius|link=y}} | |||
| | single_temperature = {{convert|-16.5|C|K F}} | | single_temperature = {{convert|-16.5|C|K F}} | ||
| <!-- ATMOSPHERE --> | <!-- ATMOSPHERE --> | ||
| Line 18: | Line 18: | ||
| }} | }} | ||
| '''KOI-4878.01''' is an ] candidate that orbits the ] main-sequence star KOI-4878. It is located about 1075 ]s (329 parsecs) from Earth.<ref>{{Cite journal|last=Rowe|first=Jason F.|title=Planetary candidates observed by kepler v: planet sample from q1-q12 (36 months)|journal= The Astrophysical Journal Supplement Series|year=2015|volume=217|issue=1|page=16|doi=10.1088/0067-0049/217/1/16|arxiv=1501.07286|bibcode=2015ApJS..217...16R|s2cid=119204743}}</ref><ref>{{Cite web|title=KOI-4878.01|url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=KOI-4878.01&type=KEPLER_CANDIDATE|access-date=2020-09-30|website=NASA Exoplanet Archive}}</ref><ref>{{Cite web|title=KOI-4878.01|url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KOI-4878.01&submit=SIMBAD+search|access-date=2020-10-04|website=Simbad}}</ref> The features of the planet are very similar to that of Earth, and if it is confirmed, it would be one of the most Earth-like planets found.<ref>{{Cite web|title=Open Exoplanet Catalogue - KOI-4878 b|url=http://www.openexoplanetcatalogue.com/planet/KOI-4878%20b/|access-date=2020-10-04|website=www.openexoplanetcatalogue.com}}</ref> The orbital period of the exoplanet is around 449 Earth days. It is very likely located within the habitable zone of its parent star.<ref>{{Cite journal|title=Life away from Earth|url=https://qinnova.uned.es/archivos_publicos/qweb_paginas/3736/boletinfarodelsabernuevaepocan12016.pdf|journal=El Faro del Saber - UNED Long-distance Learning University}}</ref><ref>{{Cite web|date=2019-09-05|title=KOI-4878.01: Kepler's Most Earth-like Planet Candidate?|url=https://www.drewexmachina.com/2019/09/05/koi-4878-01-keplers-most-earth-like-planet-candidate/|access-date=2020-09-30|website=Drew Ex Machina|language=en-US}}</ref> | '''KOI-4878.01''' is an ] candidate that orbits the ] main-sequence star ]. It is located about 1075 ]s (329 parsecs) from Earth.<ref>{{Cite journal|last=Rowe|first=Jason F.|title=Planetary candidates observed by kepler v: planet sample from q1-q12 (36 months)|journal= The Astrophysical Journal Supplement Series|year=2015|volume=217|issue=1|page=16|doi=10.1088/0067-0049/217/1/16|arxiv=1501.07286|bibcode=2015ApJS..217...16R|s2cid=119204743}}</ref><ref>{{Cite web|title=KOI-4878.01|url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=KOI-4878.01&type=KEPLER_CANDIDATE|access-date=2020-09-30|website=NASA Exoplanet Archive}}</ref><ref>{{Cite web|title=KOI-4878.01|url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=KOI-4878.01&submit=SIMBAD+search|access-date=2020-10-04|website=Simbad}}</ref> The features of the planet are very similar to that of Earth, and if it is confirmed, it would be one of the most Earth-like planets found.<ref>{{Cite web|title=Open Exoplanet Catalogue - KOI-4878 b|url=http://www.openexoplanetcatalogue.com/planet/KOI-4878%20b/|access-date=2020-10-04|website=www.openexoplanetcatalogue.com}}</ref> The orbital period of the exoplanet is around 449 Earth days. It is very likely located within the habitable zone of its parent star.<ref>{{Cite journal|title=Life away from Earth|url=https://qinnova.uned.es/archivos_publicos/qweb_paginas/3736/boletinfarodelsabernuevaepocan12016.pdf|journal=El Faro del Saber - UNED Long-distance Learning University}}</ref><ref>{{Cite web|date=2019-09-05|title=KOI-4878.01: Kepler's Most Earth-like Planet Candidate?|url=https://www.drewexmachina.com/2019/09/05/koi-4878-01-keplers-most-earth-like-planet-candidate/|access-date=2020-09-30|website=Drew Ex Machina|language=en-US}}</ref> | ||
| == Host star == | == Host star == | ||
| Its host star is a |
Its host star is a F-type main-sequence star that is slightly less massive than the Sun, although it is about 5% larger and has a temperature of about 6031 K. The star is a V magnitude 12.4 star in the constellation Draco. Despite the unknown age of the star, its low ] and fairly high ] suggest that KOI-4878 is older than the Sun.<ref>{{Cite web|title=KOI-4878|url=https://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?objname=KOI-4878&type=KEPLER_TARGET|access-date=2020-09-30|website=exoplanetarchive.ipac.caltech.edu}}</ref><ref>{{Cite web|last=Institute|first=CSIC|title=Exoplanets in the Milky Way|url=http://digital.csic.es/bitstream/10261/125578/55/16-Exoplanetas.pdf}}</ref> | ||
| == Exoplanet detection == | == Exoplanet detection == | ||
| An analysis of Kepler's data from its first to the twelve quarter revealed three possible transit events equally spaced in time. A post-analysis in the Sixteen quarter showed that the events happened within a period of 449 days, they had a duration of 12 and half hours and a transit depth of 94 ppm.<ref>{{Cite web|date=2019-09-05|title=KOI-4878.01: Kepler's Most Earth-like Planet Candidate?|url=https://www.drewexmachina.com/2019/09/05/koi-4878-01-keplers-most-earth-like-planet-candidate/|access-date=2020-10-01|website=Drew Ex Machina|language=en-US}}</ref> | An analysis of the ]'s data from its first to the twelve quarter revealed three possible transit events equally spaced in time. A post-analysis in the Sixteen quarter showed that the events happened within a period of 449 days, they had a duration of 12 and half hours and a transit depth of 94 ppm.<ref>{{Cite web|date=2019-09-05|title=KOI-4878.01: Kepler's Most Earth-like Planet Candidate?|url=https://www.drewexmachina.com/2019/09/05/koi-4878-01-keplers-most-earth-like-planet-candidate/|access-date=2020-10-01|website=Drew Ex Machina|language=en-US}}</ref> | ||
| == Characteristics == | == Characteristics == | ||
| Line 61: | Line 61: | ||
| == Habitability == | == Habitability == | ||
| The estimated features of the planet are similar to an ].<ref>{{Cite web|last=Atargatis|date=2020-11-10|title=Found more than 20 exoplanets that could host life|url=https://atargatis.news/science/found-more-than-20-exoplanets-that-could-host-life/|access-date=2020-11-12|website=Atargatis.news|language=it-IT}}</ref> It completes an orbit around its host star every 449 Earth days. Based on this, KOI-4878.01 should be in the habitable zone of the star.<ref>{{Cite book|last=Mendez|first=Abel|title=Potentially habitable worlds|url=https://iopscience.iop.org/book/978-1-6817-4401-8/chapter/bk978-1-6817-4401-8ch5}}</ref><ref>{{Cite web|date=2016-10-07|title=Planetas habitables en los que nunca habitaremos|url=https://www.elindependiente.com/futuro/2016/10/07/planetas-habitables-habitaremos/|access-date=2020-10-04|website=El Independiente|language=es}}</ref> | The estimated features of the planet are similar to an ].<ref>{{Cite web|last=Atargatis|date=2020-11-10|title=Found more than 20 exoplanets that could host life|url=https://atargatis.news/science/found-more-than-20-exoplanets-that-could-host-life/|access-date=2020-11-12|website=Atargatis.news|language=it-IT}}</ref> It completes an orbit around its host star every 449 Earth days. Based on this, KOI-4878.01 should be in the habitable zone of the star.<ref>{{Cite book|last=Mendez|first=Abel|title=Potentially habitable worlds|url=https://iopscience.iop.org/book/978-1-6817-4401-8/chapter/bk978-1-6817-4401-8ch5}}</ref><ref>{{Cite web|date=2016-10-07|title=Planetas habitables en los que nunca habitaremos|url=https://www.elindependiente.com/futuro/2016/10/07/planetas-habitables-habitaremos/|access-date=2020-10-04|website=El Independiente|language=es}}</ref> | ||
| == In literature == | |||
| KOI-4878.01 appears in ''Tras el cielo de Urano,'' a novel written by Antonio José López Serrano. The convoy from Earth - destined to conquer the exoplanet KOI-4878-01 in the constellation of the Swan - suffers a spectacular accident while orbiting the planet Uranus. Captain Íñigo Cortés, one of the survivors of the expedition, takes the reins of his ship to guide the rest of the colonists, who are not resigned to returning to Earth.<ref>{{Cite web|title=Tras el cielo de Urano|url=http://www.unoeditorial.com/portfolio/tras-el-cielo-de-urano/|access-date=2020-10-04|website=UNO editorial|language=es}}</ref> | |||
| == See also == | == See also == | ||
Latest revision as of 03:50, 11 November 2024
Unconfirmed potentially habitable extrasolar planet.jpg) Artist's impression of KOI-4878.01 | |
| Discovery | |
|---|---|
| Discovery site | Kepler space telescope |
| Discovery date | 2015 |
| Detection method | Transit |
| Orbital characteristics | |
| Semi-major axis | 1.125 AU (168,300,000 km) |
| Orbital period (sidereal) | 449.015±0.021 d |
| Star | KOI-4878 |
| Physical characteristics | |
| Mean radius | 1.05 R🜨 |
| Temperature | −16.5 °C (256.6 K; 2.3 °F) |
KOI-4878.01 is an exoplanet candidate that orbits the F-type main-sequence star KOI-4878. It is located about 1075 light years (329 parsecs) from Earth. The features of the planet are very similar to that of Earth, and if it is confirmed, it would be one of the most Earth-like planets found. The orbital period of the exoplanet is around 449 Earth days. It is very likely located within the habitable zone of its parent star.
Host star
Its host star is a F-type main-sequence star that is slightly less massive than the Sun, although it is about 5% larger and has a temperature of about 6031 K. The star is a V magnitude 12.4 star in the constellation Draco. Despite the unknown age of the star, its low metallicity and fairly high space velocity suggest that KOI-4878 is older than the Sun.
Exoplanet detection
An analysis of the Kepler space telescope's data from its first to the twelve quarter revealed three possible transit events equally spaced in time. A post-analysis in the Sixteen quarter showed that the events happened within a period of 449 days, they had a duration of 12 and half hours and a transit depth of 94 ppm.
Characteristics
Mass
KOI-4878.01's mass is somewhere between 1.4 - 3.0 Earth masses; likely about 1.9 Earth masses.
Radius
The exoplanet has a slightly larger radius than Earth: 1.05 Earth radii.
Temperature
It has an equilibrium temperature of 256 K (-16.5 °C; 2.3 °F), an average surface temperature of about 2.4 degrees C (4.3 degrees F) cooler than Earth, but it may have more greenhouse gases than Earth to trap heat.
| Property | Based on KIC data | Based on new data |
|---|---|---|
| Period (days) | 449.015±0.021 | 449.015±0.021 |
| Semimajor Axis (AU) | 1.137 +0.053/-0.040 | 1.125 |
| Planet Radius (Earth=1) | 1.04 +0.38/-0.14 | 1.05 |
| Seff (Earth=1) | 1.05 | 0.92 |
Habitability
The estimated features of the planet are similar to an Earth analog. It completes an orbit around its host star every 449 Earth days. Based on this, KOI-4878.01 should be in the habitable zone of the star.
See also
References
- Rowe, Jason F. (2015). "Planetary candidates observed by kepler v: planet sample from q1-q12 (36 months)". The Astrophysical Journal Supplement Series. 217 (1): 16. arXiv:1501.07286. Bibcode:2015ApJS..217...16R. doi:10.1088/0067-0049/217/1/16. S2CID 119204743.
- "KOI-4878.01". NASA Exoplanet Archive. Retrieved 2020-09-30.
- "KOI-4878.01". Simbad. Retrieved 2020-10-04.
- "Open Exoplanet Catalogue - KOI-4878 b". www.openexoplanetcatalogue.com. Retrieved 2020-10-04.
- "Life away from Earth" (PDF). El Faro del Saber - UNED Long-distance Learning University.
- "KOI-4878.01: Kepler's Most Earth-like Planet Candidate?". Drew Ex Machina. 2019-09-05. Retrieved 2020-09-30.
- "KOI-4878". exoplanetarchive.ipac.caltech.edu. Retrieved 2020-09-30.
- Institute, CSIC. "Exoplanets in the Milky Way" (PDF).
- "KOI-4878.01: Kepler's Most Earth-like Planet Candidate?". Drew Ex Machina. 2019-09-05. Retrieved 2020-10-01.
- How the Universe Works: An Illustrated Guide to the Cosmos. Book Sales. 2017. ISBN 9780785835417.
- Institute, CSIC. "Exoplanets in the Milky Way" (PDF).
- "La NASA ha encontrado siete exoplanetas similares a la Tierra en los que buscar vida". El HuffPost (in Spanish). 2017-02-22. Retrieved 2020-10-01.
- "KOI-4878.01". exoplanetarchive.ipac.caltech.edu. Retrieved 2020-09-30.
- "KOI-4878.01: Kepler's Most Earth-like Planet Candidate?". Drew Ex Machina. 2019-09-05. Retrieved 2020-10-01.
- Atargatis (2020-11-10). "Found more than 20 exoplanets that could host life". Atargatis.news (in Italian). Retrieved 2020-11-12.
- Mendez, Abel. Potentially habitable worlds.
- "Planetas habitables en los que nunca habitaremos". El Independiente (in Spanish). 2016-10-07. Retrieved 2020-10-04.
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