Hercules: Difference between revisions

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Fifteen stars in Hercules are known to be orbited by extrasolar planets.
Fifteen stars in Hercules are known to be orbited by extrasolar planets.


14 Herculis has two planets. The planet 14 Herculis b had the longest period (4.9 years) and widest orbit (2.8 AU) at the time of discovery. The planet 14 Herculis corbits much further out with very low eccentricity.HD 149026 has a transiting hot Jupiter planet and is one of the most prominent and studied.HD 154345 has the planet HD 154345 b, a long period (9.095 years) and wide orbit (4.18 AU).HD 164922 has the first long period Saturn-like planet discovered. The mass is 0.36 MJ and semimajor axis of 2.11 AU.HD 147506 has the most massive transiting planet HAT-P-2b at the time of discovery. The mass is 8.65 MJ.HD 155358 has two planets around the lowest metallicity planet-harboring star (21% Sun). Both planets orbit in mild eccentricities.GSC 03089-00929 has a short transiting planet TrES-3. The period was 31 hours and undergoing orbital decay.Gliese 649 has a saturnian planet around the red dwarf star.HD 156668 has a 4.15 Earth mass plan
Hercules contains two bright globular clusters: [[Messier 13]], the brightest globular cluster in the northern hemisphere, and [[Messier 92]]. It also contains the nearly spherical planetary nebula Abell 39. M13 lies between the stars η Her and ζ Her; it is dim, but may be detected by the unaided eye on a very clear night.The Hercules Cluster (Abell 2151) is a cluster of galaxies in Hercules.The Hercules–Corona Borealis Great Wall, the largest structure in the universe, is in Hercules.
 





Revision as of 01:30, 17 March 2015

Hercules is a constellation named after Hercules, the Roman mythological hero adapted from the Greek hero Heracles. Hercules was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is the fifth largest of the modern constellations. Fifteen stars in Hercules are known to be orbited by extrasolar planets.

Hercules contains two bright globular clusters: Messier 13, the brightest globular cluster in the northern hemisphere, and Messier 92. It also contains the nearly spherical planetary nebula Abell 39. M13 lies between the stars η Her and ζ Her; it is dim, but may be detected by the unaided eye on a very clear night.The Hercules Cluster (Abell 2151) is a cluster of galaxies in Hercules.The Hercules–Corona Borealis Great Wall, the largest structure in the universe, is in Hercules.


HGS Session References

HGS Sessions - Clearing Hyperspace Phantom Matrix - 3/12/2015 [1]

References


Found in HGS Manual on Page 108


Found in HGS Manual on Page 115