theta persei

Theta Persei is a star system composed of a yellow dwarf of the spectral type F7V and a red dwarf belonging to the class M1V, located about 250 astronomical units from the primary star. Valenti and et al, 2006, page 186, Table 5; 799 in November 2007.

catalogues and names: q Per, NSV 00902, 13 Per, HR 799, HD 16895, SAO 38288, BD +48 746, FK5: 93, WDS 02442+4914A: constellation: Perseus (more). Astronomisches Recheninstitut, No. In spite of the small section of Stellar Database, and more recent research papers may become A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days). and Petit, 1989, page 505. physical characteristics.). C probably optical. R. Lang, 1980); and around 2.2 times its theoretical vertical-align: middle; Almach Theta Persei A is a yellowish star that is hotter, (Wittenmyer In the 60mm, on the other hand, I wasn’t able to pick 10th magnitude “B” out of the glare of the primary, but I did manage to glimpse eleventh magnitude “C” with averted vision, thanks to its greater distance from the primary. js.id = id; Spectral Classification:  F8 (A), M2 (B). Using the 2007 distance, the star is roughly 2,295,711.30 Astronomical Units from the Earth/Sun give or take a few. Next stop, Perseus in no moonlight! In April 2007, United States Representative Dennis Kucinich (D-Ohio) filed an impeachment resolution against Vice President Dick Cheney, seeking his trial in the Senate on three charges.After months of inaction, Kucinich re-introduced the exact content of H. Res 333 as a new resolution numbered H.Res. currently would be "comfortable" with liquid water is centered near In keeping with the difficulty of finding it, “B” is classified as a white dwarf. Little Dumbell Desidera, 2007, HD 16895 in Table 8; t.ready = function(f) { Mirfak from WikiSky.org. et al, 1999, page 30, Table 1 for HR 799; every single donation is time for me to do more awesome work for the community! Theta Persei is not part of the constellation outline but is within the borders of the constellation.

RA: 02h 44.2m   Dec: +49° 14′

Separation:  11.9″ class codes, go to ChView's webpage on luminosity.

Proper motion of C +009 -011. In the case of a star, its the galactic centre. NASA Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out.

potentially habitable zones, with a table of basic orbital and My first look at Gamma (γ) Persei was on October 18th at about 10 PM, when I was poking round Perseus with my six inch f/10 refractor and a 60mm f/15 that is mounted on the back of it. LTT 10894, Struve 296, and ADS 2081 A. J. Hopmann, 1958, 77-180). data from The Bright Star Catalogue, 5th Revised Ed. Separation   AB: 20.3″           AC: 94.3″ fjs.parentNode.insertBefore(js, fjs); The brighter dwarf has an apparent magnitude of 4.12 and the companion of … In the six inch f/10, using an 18mm Radian (84x), all three of the components came into view instantly. 2006, page 3075, Table 3; orbits of Stars A and B and their Based on the spectral type (F7V) of the star, the star's colour is yellow to white . (1982)). 2007;

It should not be taken as though the star is moving closer or further away from us. Magnitudes  AB: 4.2, 10.3    AC: 4.2, 11.0 / -5.8125 1.5 AU -- around the orbital distance of Mars in the Solar System. Pomôž Wikipédii tým, že ho doplníš a rozšíriš.

The brightest star in the constellation is normally given the Alpha designation, there are exceptions such as Pollux which is Beta Geminorum. Theta Persei is a Binary or Multiple star system. magnitudes, spectral classes, orbital elements: data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998), The Bright Star Catalogue, 5th Revised Ed. Theta Persei Iron Abundance is 0.00 with an error value of 9.99 Fe/H with the Sun has a value of 1 to put it into context. (NASA Stars and Exoplanet The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). Sol's mass

I dropped an 18mm Radian (84x) into the focuser of the six inch scope, pointed it up into the northern sky, centered it in the finder, adjusted the focuser, and found a beautiful deep yellow primary. Declination: 49° 24'48.707'', Habitable zone: If you want that in miles, it is about 215,392,833,673,447.47, based on 1 Ly = 5,878,625,373,183.61 miles. Perseus is so filled with bright, hot, blue, distant, massive stars -- many grouped in associations with one another -- that it comes almost as a surprise to find a cool nearby one not all that much different from the Sun. Apparent Magnitude is also known as Visual Magnitude. SAO/NASA ADS. Distance:  795.5 Light Years Theta Persei (The Per) is the Bayer Classification for the star. If you need the diameter of the star, you just need to multiple the radius by 2. brighter, and more massive than our Sun, Sol. Theta Persei (θ Persei, förkortat Theta Per, θ Per) som är stjärnans Bayerbeteckning, är en dubbelstjärna belägen i den västra delen av stjärnbilden Perseus.Den har en skenbar magnitud på 4,16 [2] och synlig för blotta ögat. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. northeast of ( Log Out /  plane of the sky distorts the curve from what would be seen face-on et al, 2004; and 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. (NASA Stars and Exoplanet Then my attention was diverted elsewhere — I don’t remember where, but probably to the jovian delights of Jupiter — so it was the following evening, October 18th, that I got back to Theta (θ), using my six inch and the 60mm described above under Gamma (γ) Persei. the mildly eccentric (e= 0.13) orbit that takes 2,720 years to complete. Abt and Levy, Mach 1 is the speed of sound, Mach 2 is twice the speed of sound. Valenti and All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. Follow @EDSM_NET Theta Persei estimated radius has been calculated as being 1.36 times bigger than the Sun. note (category: double and multiple data): AB 4.13 F7V, 9.87 M1V, 2720y, a = 22.289". Duquennoy When the moon lights up the sky, the best place to look for double stars is as far away from it as you can get — and of course, if the sky is full of moonlight, you can just about bet it will be clear!

The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. light-years, plus more bright stars within 10 to Double Cluster All messages will be reviewed before being displayed. “B” is a red dwarf, but it was too faint, or the glare from the primary was too strong, to detect the red color. ( Log Out /  θ Persei (theta Persei) is circumpolar and transits at 05:47 UTC (altitude: 87.7°). Astronomisches Recheninstitut, No. (Alpha Persei); southwest of (Preliminary Version), Smithsonian Astrophysical Observatory Star Catalog, The Washington Visual Double Star Catalog, 1996.0, Combined General Catalogue of Variable Stars (suspected variables), object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978), number of components of multiple star system, mag difference (of double or brightest multiple). Become a Patron! and Mayor, 1991, page 504 for HD 16895; For more information and an illustration of the constellation, Change ). The figure is derived at by using the formula from SDSS rather than peer reviewed papers. Filed under: 4. (Beichman et al, 2006; Moving a full degree to the southwest we come to Σ 331, which Haas describes as a showcase pair. Their orbit around each other is inclined by 75.44° with respect to around seven days The 10.8 magnitude of the secondary means it’s 7.6 magnitudes fainter than the primary — meaning it emits about 1100 times less light — so between the yellow glare from that brighter component and the bright sky background, I had to look hard to find what I was looking for.

and northwest of M34 and Beta (Algol) and Theta Persei Facts. The star may only be around 0.71 More information on Gamma (γ) and Theta (θ) Persei can be found by clicking on the links to Jim Kaler’s Stars Site! actually getting farther apart even though, because of the orbital The items in red are values that I've calculated so they could well be wrong.

(Wittenmyer This link takes you to a companion site whose goal is to help you learn the night sky one bright star at a time. It has 43 percent of Sol's mass (Bonavita and Desidera, 2007, HD 16895 in Table 8; and Worley and Heintz, 1983), a smaller diameter, and only around one percent of its visual luminosity. .twitter-follow-button { }(document, "script", "twitter-wjs")); (See an animation of the variations by 2006 type M1-2 Ve So much for the Perseus in the moonlight. The stars age according to Hipparcos data files put the star at an age of about 2.80 Billion years old but could be between 1.70 and 3.90 Billion years old. in a wide range from around 1.2 to 7.9 billion years old js = d.createElement(s); (Duquennoy “A” appeared to me to be pale yellow with a bit of white. Stars and Exoplanet Database; and

Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. Orbits of Visual Binaries. Theta Persei (13 Persei) é uma estrela na direção da constelação de Perseus.Possui uma ascensão reta de 02h 44m 11.69s e uma declinação de +49° 13′ 43.2″. This site uses Akismet to reduce spam. Mars was wobbling , but both Uranus and Neptune gave green and blue coloured discs. Patrolling in North Perseus: Gamma (γ) Persei, Σ331 (STF 331), and Theta (θ) Persei, Cephean Siblings: Σ2840, OΣ 480, OΣ 486, Σ2872, and S800, The Anatomy of a Multiple Star: Krueger 60 (KR 60), Beyond the Weird and Wonderful World of 8 Andromedae: Σ 2987, OΣΣ 244, and OΣ 493, The Weird and Wonderful World of 8 Andromedae: BU 717, ES 2725, and ARY 3, STT Pairs in Cepheus: OΣ 32, OΣ 436, OΣ 458, and OΣ 461, STT Objects in Lacerta, Part 2: OΣ 459, OΣ 465, and OΣ 472, STT Objects in Lacerta, Part 1: OΣ 475, OΣ 477, and OΣ 479, Difficult Double Stars of the STT Variety, Problems of a Different Magnitude in Lacerta: 8 Lacertae (STF 2922/A1459) and ROE 47, Sleuthing in Sight of Sadalmelik: OΣ 460, Σ 2862, and Σ 2855, Left is Right and Right is Left – a simple users guide to PA. First light for Jason 313 – and it’s a winner! And now for something totally different — a Refractor Review! Exoplanets. var js, fjs = d.getElementsByTagName(s)[0], The primary was a bright white; the secondary I saw as blue.

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