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K2-72b

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Extrasolar planet

K2-72b
Discovery
Discovery date	July 18, 2016
Detection method	Transit
Orbital characteristics
Semi-major axis	0.0370 ± 0.0047 AU (5,540,000 ± 700,000 km)
Orbital period (sidereal)	5.57739±0.00068 d
Star	K2-72
Physical characteristics
Mean radius	0.067±0.018 `R`_J 0.75±0.20 `R`_🜨

K2-72b is a small exoplanet orbiting around the red dwarf star K2-72 approximately 227.7 light-years away. K2-72b completes an orbit in 5.57 days, and it has a radius of only 75% of that of the Earth.

References

^ "K2-72b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2016-07-18.

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Space probe launches	Hitomi (X-ray observatory; Feb 2016) ExoMars Trace Gas Orbiter (Mars orbiter; Mar 2016) OSIRIS-REx (asteroid sample-return mission; Sep 2016)
Impact events	DN160822 03
Selected NEOs	Asteroid close approaches (85990) 1999 JV6 1994 WR12 2013 TX68 2016 EU85 469219 Kamoʻoalewa 2016 PQ (164121) 2003 YT1
Exoplanets	38 Virginis b atmospheric composition of 55 Cancri e BD+20 594b Gliese 536 b HD 19467 b HD 131399 Ab (retracted in 2022) HD 164922 c HIP 41378 b c d e f K2-33b K2-332 b K2-72 b c d e KELT-9b KELT-11b Kepler-20g Kepler-56d Kepler-737b Kepler-1229b Kepler-1520b Kepler-1625b Kepler-1638b Kepler-1647b OGLE-2007-BLG-349(AB)b OGLE-2012-BLG-0950Lb Proxima Centauri b Pr0211 c Qatar-3b Qatar-4b Qatar-5b TRAPPIST-1 b c d TW Hydrae b V830 Tauri b 2MASS J11193254–1137466 AB 2MASS J2126–8140 as planet
Discoveries	GW150914 (announced) IDCS 1426 Planet Nine (hypothesized) GN-z11 SDSS J1240+6710 Crater 2 GW151226 (announced) 2015 RR245 (announced) BOSS Great Wall GRB 160625B (471325) 2011 KT19 (announced) 2014 UZ224 (announced) WISE J080822.18-644357.3 Virgo I
Novae	ASASSN-15lh SN 2016aps ASASSN-16kt ASASSN-16ma
Comets	252P/LINEAR 460P/PanSTARRS 53P/Van Biesbroeck C/2016 R2 (PANSTARRS) 81P/Wild 9P/Tempel 144P/Kushida 43P/Wolf–Harrington 45P/Honda–Mrkos–Pajdušáková
Space exploration	Juno (entered Jupiter orbit; Jul 2016) Rosetta / Philae (end of mission to comet 67P; Sep 2016) Schiaparelli EDM (Mars lander; Oct 2016)
Outer space portal Category:2015 in outer space — Category:2016 in outer space — Category:2017 in outer space

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Constellation of Aquarius

Bayer	α (Sadalmelik) β (Sadalsuud) γ (Sadachbia) δ (Skat) ε (Albali) ζ η θ (Ancha) ι κ (Situla) λ (Hydor) μ ν ξ (Bunda) ο π ρ σ τ τ υ φ χ ψ (91) ψ ψ ω ω A A b b b c c c d e f g g h i i i k α PsA C
Flamsteed	1 4 5 7 8 9 10 11 12 14 15 16 17 18 19 20 21 24 26 28 29 30 32 35 36 37 39 40 41 42 44 45 47 49 50 51 54 56 58 60 61 64 65 67 70 72 74 75 77 78 81 82 84 85 87 94 96 97 100
Variable	R U AE DV EP EW EZ FO HK IL HU IZ LL LP
HR	8017 8056 8121 8263 8363 8453 8500 8507 8581 8612 8629 8645 8716 8783 8836 8856 8879 8924 9014
HD	206610 (Bosona) 210277 212771 (Lionrock) 215152 219617 220466 220689 222093 222582
Other	2MASS J21392676+0220226 BD−22 5866 Gliese 849 K2-21 K2-28 K2-58 K2-72 K2-138 LS IV-14 116 Sneden's Star TRAPPIST-1 WASP-6 (Márohu) WASP-47 WASP-69 WASP-75

Exoplanets	ψ Aquarii b Gliese 849 b Gliese 876 b c d e HD 206610 b HD 210277 b HD 212771 b (Victoriapeak) HD 221416 b HD 222582 b K2-66b K2-72b c d e K2-138b TRAPPIST-1b c d e f g h WASP-6b

Star clusters	Messier 2 Messier 72 Messier 73

Nebulae	Helix Nebula Saturn Nebula

NGC	6975 7001 7010 7047 7051 7065 7069 7077 7081 7184 7222 7252 7257 7301 7302 7393 7492 7585 7592 7600 7606 7723 7727 7759
Other	Aquarius Dwarf ESO 603-G21 Lyman-alpha blob 1 PGC 1228197 PHL 293B SMM J2135-0102 WISE J224607.57−052635.0 J2345-0449

Galaxy clusters	Abell 2597 RXC J2211.7-0350 XMMXCS 2215-1738

Astronomical events	SN 2213-1745

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