Alkarab, υ Peg, 68 Pegasi, BD+22°4833, FK5 881, GC 32585, HD 220657, HIP 115623, HR 8905, SAO 91253[9]
Database references
SIMBAD
data
Upsilon Pegasi, Latinised from υ Pegasi, is a star within the great square[10] in the northern constellation of Pegasus. It has the proper name Alkarab/ˈælkəræb/.[11] This object has a yellow-white hue and is faintly visible to the naked eye with an apparent magnitude of 4.40.[2] It is located at a distance of approximately 170 light-years from the Sun based on parallax,[1] but is drifting closer with a radial velocity of −8.6 km/s.[5] The star is moving through the galaxy at a speed of 50.6 km/s relative to the Sun. Its projected galactic orbit carries it between 18,600 and 26,300 light-years from the center of the galaxy.[6]
This object is an aging giant star with a stellar classification of F8III.[4] It is currently in the Hertzsprung gap and is a source of X-ray emission.[3] The star has 2.2[7] times the mass of the Sun and is spinning with a projected rotational velocity of 73.4 km/s.[3] It has an iron abundance of −0.01 dex, or 97.7% of the Sun's. Upsilon Pegasi has six times the girth of the Sun and is radiating 43 times the Sun's luminosity at an effective temperature of 6,061 K.[8]
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UpsilonPegasi, Latinised from υ Pegasi, is a star within the great square in the northern constellation of Pegasus. It has the proper name Alkarab /ˈælkəræb/...
51 Pegasi b, officially named Dimidium /dɪˈmɪdiəm/, is an extrasolar planet approximately 50 light-years (15 parsecs) away in the constellation of Pegasus...
planet orbiting Tau Boötis. Like 51 Pegasi b, the first extrasolar planet discovered around a normal star, Upsilon Andromedae b orbits very close to its...
51 Pegasi (abbreviated 51 Peg), formally named Helvetios /hɛlˈviːʃiəs/, is a Sun-like star located 50.6 light-years (15.5 parsecs) from Earth in the constellation...
Upsilon Andromedae (υ Andromedae, abbreviated Upsilon And, υ And) is a binary star located 44 light-years from Earth in the constellation of Andromeda...
presence of the nearby eccentric giant planet. 51 Pegasi b Tau Boötis b 55 Cancri b 47 Ursae Majoris b Upsilon Andromedae b List of exoplanets discovered before...
Hertzsprung gap include: Epsilon Pegasi Pi Puppis Epsilon Geminorum Beta Arae Gamma Cygni Capella B Canopus, Iota Carinae, and Upsilon Carinae are also starting...
Astronomy) 天文教育資訊網 2006 年 7 月 7 日 previous designation of this star was Delta Pegasi (δ Peg) (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy)...
though not so extreme as that of the previously detected hot Jupiter 51 Pegasi b. The orbital period indicates that the planet is located close to a 1:3...
Water Vapor in the Thermal Spectrum of the Non-transiting Hot Jupiter Upsilon Andromedae b". The Astronomical Journal. 154 (2): 78. arXiv:1707.01534...
system 2.39 1.6 Gamma Cassiopeiae Binary star system 2.39 2.29 Epsilon Pegasi Star Normal maximum brightness is 2.29; magnitude 0.7 once observed 2.39...
exoplanets and also the first planetary system around a Sun-like star, Upsilon Andromedae. Marcy was a co-investigator on the NASA Kepler mission. His...
discovery of a 51 Pegasi-like planet orbiting 55 Cancri A was announced, together with the planet of Tau Boötis and the inner planet of Upsilon Andromedae....
stars a Greek letter from both constellations: Alpha Andromedae = Delta Pegasi, Beta Tauri = Gamma Aurigae, and Nu Boötis = Psi Herculis. (He catalogued...
made in 1995, when a giant planet, 51 Pegasi b, was found in a four-day orbit around the nearby G-type star 51 Pegasi. The frequency of detections has increased...
a giant planet was found in a four-day orbit around the nearby star 51 Pegasi. Some exoplanets have been imaged directly by telescopes, but the vast majority...
a giant planet was found in a four-day orbit around the nearby star 51 Pegasi. Some exoplanets have been imaged directly by telescopes, but the vast majority...
1088/1674-4527/accb7e. Greenhill; et al. (2002). "epsilon Eridani, upsilon Andromedae, 51 Pegasi, HD 209458, HD 196050". IAU Circ. 7985: 1. Bibcode:2002IAUC...
39.27±0.03 G3-5V 0.92 0.958 5.52 5.11 B 39.29±0.09 G2V 0.99 0.985 5.22 4.83 85 Pegasi A 39.5±0.4 G5Vb 0.91 0.88 5.75 5.32 Part of a binary star system...
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