<system>
	<name>TRAPPIST-1</name>
	<name>2MASS J23062928-0502285</name>
	<name>K2-112</name>
	<name>EPIC 246199087</name>
	<rightascension>23 06 29.3684052886</rightascension>
	<declination>-05 02 29.031690445</declination>
	<distance errorminus="0.019" errorplus="0.019">12.430</distance>
	<star>
		<name>TRAPPIST-1</name>
		<name>2MASS J23062928-0502285</name>
		<name>K2-112</name>
		<name>EPIC 246199087</name>
		<name>Gaia DR2 2635476908753563008</name>
		<magV errorminus="0.082" errorplus="0.082">18.798</magV>
		<magR errorminus="0.004" errorplus="0.004">16.401</magR>
		<magI errorminus="0.002" errorplus="0.002">13.966</magI>
		<magJ errorminus="0.02" errorplus="0.02">11.35</magJ>
		<magH errorminus="0.02" errorplus="0.02">10.72</magH>
		<magK errorminus="0.02" errorplus="0.02">10.30</magK>
		<spectraltype>M8 V</spectraltype>
		<temperature errorminus="41" errorplus="41">2516</temperature>
		<metallicity errorminus="0.08" errorplus="0.08">0.04</metallicity>
		<radius errorminus="0.003" errorplus="0.003">0.121</radius>
		<mass errorminus="0.006" errorplus="0.006">0.089</mass>
		<age errorminus="2.2" errorplus="2.2">7.6</age>
		<planet>
			<name>TRAPPIST-1 b</name>
			<name>2MASS J23062928-0502285 b</name>
			<name>K2-112 b</name>
			<name>EPIC 246199087 b</name>
			<name>Gaia DR2 2635476908753563008 b</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.00058" errorplus="0.00058">2457606.56117</transittime>
			<impactparameter errorminus="0.078" errorplus="0.092">0.126</impactparameter>
			<radius errorminus="0.00285" errorplus="0.00277">0.10001</radius>
			<inclination errorminus="0.27" errorplus="0.22">89.65</inclination>
			<period errorminus="0.0000075" errorplus="0.0000075">1.5108739</period>
			<semimajoraxis errorminus="0.000000057" errorplus="0.000000057">0.01154775</semimajoraxis>
			<eccentricity errorminus="0.00304" errorplus="0.00304">0.00622</eccentricity>
			<periastron errorminus="34.24" errorplus="34.24">336.86</periastron>
			<temperature errorminus="7.7" errorplus="7.7">400.1</temperature>
			<mass errorminus="0.0000450" errorplus="0.000485">0.003200</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2016</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 c</name>
			<name>2MASS J23062928-0502285 c</name>
			<name>K2-112 c</name>
			<name>EPIC 246199087 c</name>
			<name>Gaia DR2 2635476908753563008 c</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.00064" errorplus="0.00064">2457568.58230</transittime>
			<impactparameter errorminus="0.084" errorplus="0.076">0.161</impactparameter>
			<radius errorminus="0.00276" errorplus="0.00267">0.09769</radius>
			<inclination errorminus="0.17" errorplus="0.17">89.67</inclination>
			<period errorminus="0.000015" errorplus="0.000015">2.421818</period>
			<semimajoraxis errorminus="0.00000015" errorplus="0.00000015">0.01581512</semimajoraxis>
			<eccentricity errorminus="0.00188" errorplus="0.00188">0.00654</eccentricity>
			<periastron errorminus="17.10" errorplus="17.10">282.45</periastron>
			<temperature errorminus="6.6" errorplus="6.6">341.9</temperature>
			<mass errorminus="0.000412" errorplus="0.000447">0.003637</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2016</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 d</name>
			<name>2MASS J23062928-0502285 d</name>
			<name>K2-112 d</name>
			<name>EPIC 246199087 d</name>
			<name>Gaia DR2 2635476908753563008 d</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.0023" errorplus="0.0023">2457682.2921</transittime>
			<impactparameter errorminus="0.11" errorplus="0.11">0.17</impactparameter>
			<radius errorminus="0.00205" errorplus="0.00205">0.06994</radius>
			<inclination errorminus="0.16" errorplus="0.16">89.75</inclination>
			<period errorminus="0.00017" errorplus="0.00017">4.04982</period>
			<semimajoraxis errorminus="0.00000044" errorplus="0.00000044">0.02228038</semimajoraxis>
			<eccentricity errorminus="0.00093" errorplus="0.00093">0.00837</eccentricity>
			<periastron errorminus="6.17" errorplus="6.17">-8.73</periastron>
			<temperature errorminus="5.6" errorplus="5.6">288.0</temperature>
			<mass errorminus="0.000110" errorplus="0.000122">0.000934</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2017</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 e</name>
			<name>2MASS J23062928-0502285 e</name>
			<name>K2-112 e</name>
			<name>EPIC 246199087 e</name>
			<name>Gaia DR2 2635476908753563008 e</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.0025" errorplus="0.0025">2457574.9829</transittime>
			<impactparameter errorminus="0.09" errorplus="0.11">0.12</impactparameter>
			<radius errorminus="0.00241" errorplus="0.00232">0.08118</radius>
			<inclination errorminus="0.12" errorplus="0.10">89.86</inclination>
			<period errorminus="0.000091" errorplus="0.000091">6.099570</period>
			<semimajoraxis errorminus="0.00000034" errorplus="0.00000034">0.02928285</semimajoraxis>
			<eccentricity errorminus="0.00058" errorplus="0.00058">0.00510</eccentricity>
			<periastron errorminus="8.47" errorplus="8.47">108.37</periastron>
			<temperature errorminus="4.9" errorplus="4.9">251.3</temperature>
			<mass errorminus="0.000236" errorplus="0.000249">0.002429</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2017</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 f</name>
			<name>2MASS J23062928-0502285 f</name>
			<name>K2-112 f</name>
			<name>EPIC 246199087 f</name>
			<name>Gaia DR2 2635476908753563008 f</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.0072" errorplus="0.0072">2457616.1548</transittime>
			<impactparameter errorminus="0.035" errorplus="0.035">0.382</impactparameter>
			<radius errorminus="0.00268" errorplus="0.00259">0.09332</radius>
			<inclination errorminus="0.034" errorplus="0.034">89.680</inclination>
			<period errorminus="0.00053" errorplus="0.00053">9.20648</period>
			<semimajoraxis errorminus="0.00000048" errorplus="0.00000048">0.03853361</semimajoraxis>
			<eccentricity errorminus="0.00068" errorplus="0.00068">0.01007</eccentricity>
			<periastron errorminus="3.11" errorplus="3.11">368.81</periastron>
			<temperature errorminus="4.2" errorplus="4.2">219.0</temperature>
			<mass errorminus="0.000245" errorplus="0.000252">0.002939</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2017</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 g</name>
			<name>2MASS J23062928-0502285 g</name>
			<name>K2-112 g</name>
			<name>EPIC 246199087 g</name>
			<name>Gaia DR2 2635476908753563008 g</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.0058" errorplus="0.0058">2457529.4724</transittime>
			<impactparameter errorminus="0.031" errorplus="0.031">0.421</impactparameter>
			<radius errorminus="0.00294" errorplus="0.00285">0.10242</radius>
			<inclination errorminus="0.025" errorplus="0.025">89.710</inclination>
			<period errorminus="0.00044" errorplus="0.00044">12.35281</period>
			<semimajoraxis errorminus="0.00000032" errorplus="0.00000032">0.04687692</semimajoraxis>
			<eccentricity errorminus="0.00058" errorplus="0.00058">0.00208</eccentricity>
			<periastron errorminus="13.83" errorplus="13.83">191.34</periastron>
			<temperature errorminus="3.8" errorplus="3.8">198.6</temperature>
			<mass errorminus="0.000299" errorplus="0.000308">0.003612</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2017</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
			<image>eso1706a</image>
			<imagedescription>Artist's impression of the TRAPPIST-1 planetary system. Credit: ESO/M. Kornmesser/spaceengine.org.</imagedescription>
		</planet>
		<planet>
			<name>TRAPPIST-1 h</name>
			<name>2MASS J23062928-0502285 h</name>
			<name>K2-112 h</name>
			<name>EPIC 246199087 h</name>
			<name>Gaia DR2 2635476908753563008 h</name>
			<list>Confirmed planets</list>
			<istransiting>1</istransiting>
			<transittime errorminus="0.0018" errorplus="0.0018">2457700.0875</transittime>
			<impactparameter errorminus="0.29" errorplus="0.22">0.45</impactparameter>
			<radius errorminus="0.00241" errorplus="0.00232">0.06896</radius>
			<inclination errorminus="0.05" errorplus="0.10">89.80</inclination>
			<period errorminus="0.00068" errorplus="0.00068">18.76626</period>
			<semimajoraxis errorminus="0.00000080" errorplus="0.00000080">0.06193488</semimajoraxis>
			<eccentricity errorminus="0.00121" errorplus="0.00121">0.00567</eccentricity>
			<periastron errorminus="9.66" errorplus="9.66">338.92</periastron>
			<temperature>167</temperature>
			<mass errorminus="0.000154" errorplus="0.000176">0.001041</mass>
			<lastupdate>18/09/18</lastupdate>
			<discoveryyear>2017</discoveryyear>
			<discoverymethod>transit</discoverymethod>
			<description>Astronomers have found this system of seven Earth-sized planets just 40 light-years away. Using ground and space telescopes the planets were all detected as they passed in front of their parent star, the ultracool dwarf star known as TRAPPIST-1. The six inner planets form a near-resonant chain such that their orbital periods (1.51, 2.42, 4.04, 6.06, 9.21, 12.35 days) are near ratios of small integers. This architecture suggests that the planets formed farther from the star and migrated inward. The seven planets have equilibrium temperatures low enough to support liquid water on their surfaces.</description>
		</planet>
	</star>
	<constellation>Aquarius</constellation>
</system>
