P E R S E U S

 

ori.gif (1448 bytes) Mythology and history

Mitología de Perseus

      In Greek mythology Perseo or Perseus he was the hero who ended gorgona Medusa; he was son of Zeus, father of the Gods, and Dánae, daughter of Acrisio, king of Argus. Warned that he would be assassinated by his grandson, Acrisio locked up mother and son in a coffer and threw them there to the sea. The current dragged them until the island of Sérifos, where they were rescued and there Perseo reached the maturity. Polidectes, king of Sérifos, fell in love with Dánae and, fearing that Perseo could interfere in its plans, it sent it in search of the head of Medusa, a monster whose watched it turned the men stone. Helped by Hermes, messenger of the Gods,

             Perseo undertook its way in search of grayas, three old witches who shared a single eye. Perseo took off it and it refused to give back it while they did not give instructions him to reach to the nymphs of the north. From the nymphs it obtained winged sandals, a magical chaff that kept everything what a helmet was put in him and that returned it invisible. Equipped with a sword made by Hermes, as it could not bend nor never be broken, and a shield that gave the Athenian goddess him, that would protect it of being turned stone, Perseo found to Medusa and it killed it. Hair net thanks to the helmet, was able to escape to the fury of its sisters and with the head of the Medusa in the chaff it returned flying with his winged sandals to house.

             When passing by Ethiopia, it rescued princess Andrómeda when they were on the verge of sacrificing it to a marine monster and she took it with himself like his woman. In Sérifos it released to his mother of the harassments of Polidectes using the head of Medusa to turn to the king and its acolytes stone. All returned to Greece, where Perseo killed accidentally to its Acrisio grandfathers with a disc in funeral games in Larisa, which the prophecy was fulfilled. According to a legend, Perseo went to Asia, where his Perses son governed the Persians, whose name comes from him

 

ori.gif (1448 bytes) Characteristics

          

The constellation of Perseus is a precious and enormous square stellar group of more of 600º located in the North hemisphere near the circumpolar zones since it crosses the parallel of 50º of North latitude by the north and reaches 30º of North latitude by the south. He is observable during great part of the year, from August to April, culminating during the month of November on the zenith or our heads; however for the inhabitants of the South hemisphere, one is a constellation difficult to identify that it culminates to low height during the austral spring.

            The equator of the Milky Route or our galaxy crosses by the noroccidental sector the constellation of Perseus, for that reason great amount of stellar C L U S T E Rs and double and variable stars in Perseus is observable, is possible to emphasize the double C L U S T E R of Perseus, that turns out fascinating to observe it with any telescope in dark nights of winter and far from the luminosity of the cities.  

            During the night from the 11 to the 12 of August he is observable in the constellation of Perseus to observe the meteor rain of the famous perseids ones world-wide to present/display bolides shining and remarkable meteor multitude. In the Web he is available the last meteoric radiating observations of and among them the perseids ones.

            The constellation of Perseus I located the 22 of January of 1982 at the age of 14 years from the locality of Inca, Majorca, Spain to it.

Constelación de Perseus

 

Main stars

       Alpha, a; denominated Mirphak, of magnitude 1.79 and color yellow one, is to 592 years Earth light, is a yellow giant 5300 times more luminous than our Sun.

      Beta, b; denominated ALGOL, very well-known being prototype of a type of variables of eclipse or eclipsantes or ALGOL, formed by a companion who eclipsa to main the every 2 days and 20 hours, happening from 2.3 to 3.5 of magnitude. During 59 hours, its light is almost constant; in the 5 following hours it diminishes to 30% of his original power; then, it returns to grow during the 5 following hours. ALGOL is composed by two separated shining stars by about 10 million kilometers. These two stars turn one around the other and they are eclipsan mutually of periodic form; the eclipse is not total because the plane of revolution of stars is inclined 8° with respect to the line of sight. Each one of stars has a diameter of about 2.5 million kilometers. Other 300 variable variable stars this type denominated of the Algol type or binary eclipsantes are known. Their periods vary between the 6 hours and the 29 years. The system is to 115 years Earth light.

    Gamma,
g; of 2.95 magnitude and yellow, located to the north of the constellation near Cassiopea. It's 256 years Earth light.

 

Other objects

           M34: Precious stellar C L U S T E R of magnitude 5.2 located to the east of the constellation closely together of Andromeda. It is formed by included stars of the ninth magnitude in a field of 35' of arc, It's of the Earth 1,400 years light, has a considered age of 190 million years.

          NGC 884 and 889: It is famous the double C L U S T E R of Perseus, located already closely together of the constellation of Cassiopea, was not discovered by Messier, for that reason it is not denominated with M, but peculiarly are visible at first, their magnitudes are of 6.1 and 5,3; their angular diameters are  of 30' of both, 7,500 and 7,170 years it's respectively of the Earth light, and the considered ages are of 3.10 and 5.6 million years.

         M 76: It is a planetary nebula that is in the east of the constellation near Cassiopea and Adromeda, has a magnitude of 11.0 visible one with good telescopes, has a diameter of 163"of arc

 

ori.gif (1448 bytes) Observations by telescope

PLANETARY NEBULAE

NGC:650 M:76

R.A.: 01h.39m.

Dec: 51º19'

Mag: 11.3 Dim: 2'x5' AOC: 8 CNAO: 1
D.D.S.: 00-Aug.-1983  

PLANETARY NEBULAE

NGC:651 M:--

R.A.: 01h.39m.

Dec: 51º19'

Mag: 11.3 Dim: 2'x1' AOC: 9 CNAO: 2
D.D.S.: 00-Aug.-1983  

m76

 

                NOTE: One is a concentrated planetary nebula in two outstanding nuclei of cloudiness, the NGC651 is practically considered impossible, being observed with clarity NGC650. One is in a partially rich zone. It is observed with the eyeglass of 50x, although unquestionably better image with 200x is obtained

 

C L U S T E R

NGC:744

M:-- R.A.: 01h.55m. Dec: 55º14'
Mag: 9.4 Dim: 7'x5' AOC: 10 CNAO: 3
D.D.S.: 00-Aug.-1983  

ngc744

           

                NOTE: One is in a rich zone. Cloudiness in the accumulation is observed, therefore, he is impossible to count the number of stars that form it, almost has rhombus form. A remarkable concentration is observed towards the center; it is identified without difficulty with the eyeglass of 50x.

 

C L U S T E R

NGC:884

M:-- R.A.: 02h.15m. Dec: 56º55'
Mag: 4.7 Dim:80'x36' AOC: 11 CNAO: 4
D.D.S.: 00-Aug.-1983  

ngc884

 

                NOTE: One is one of the famous ones doubles accumulation of Perseus. It is formed by more than one hundred stars of different brightness, distributed of an irregular form honoring multitude of triangles and rhombuses; it has a slight concentration towards the center, therefore, one is a quite rich stellar accumulation.

 

C L U S T E R

NGC:869

M:-- R.A.: 02h.15m. Dec: 56º55'
Mag: 4.5 Dim: 80'x36' AOC: 182 CNAO: 62
D.D.S.: 20h.44m.(UT); 19-Sep.-1984  

ngc869

 

                NOTE: One is the second accumulation that is in the double accumulation of Perseus; one is very impressive a stellar accumulation, formed by one hundred stars of similarity brightness, ramifications of structure with angles of position of 100º and 290º are observed; and multitude of star groups forming triangles and rhombuses. In this diagram it is observed in the North part of NGC 884; pertaining to the previous accumulation. It is identified at first; but the best spectacle we obtain it with 50x to observe both, and with 100x to study the internal structure of some of them, with 200x, we watched zone limited and of strong concentration; like the previous one, has a notable and significant concentration towards the center.

 

C L U S T E R

NGC:957

M:-- R.A.: 02h.29m. Dec: 57º18'
Mag: 7.2 Dim: 10' AOC: 247 CNAO: 71
D.D.S.: 19h.05m.(UT); 22-Nov.-1984 (prisma)  

D O U B L E

Nom: h 2143 R.A.: 02h.33m.

Dec: 57º32'

Mag: 8.0, 8.6 Sep.: 23.4" P.A.: 19º Nat: ? Spec.: B, ?
AOC: 246 DSC: 176 D.D.S.: 19h.09m.(UT); 22-Nov.-1984 (prism)

ngc957

          

        NOTE: NGC  957: One is a precious stellar accumulation. It has extended form, in form of comet tail oriented in East-West sense, distinguish six immersed stars in the accumulation, is observed like an associate diffuse nebula.

            h 2143: One is to 2' to the west of NGC 957; it is formed by very weak components, I create to suppose of the eighth magnitude, something tight; unfolding itself not without difficulty with the eyeglass of 50x, profit not to identify the colors. It has been identified in the Sky Catalogue 2000.0.

 

D O U B L E

Nom: S 331 R.A.: 02h.57m.

Dec: 52º09'

Mag: 5.4,6.8 Sep.: 12" P.A.: 66º Nat: ? Spec.: ?, ?
AOC: 248 DSC: 177 D.D.S.: 19h.55m.(UT); 22-Nov.-1984 (prisma)

sigma331

           

            NOTE: One is in a rich zone. One is one double brilliant, slightly separated, is unfolded without difficulty with the eyeglass of 50x, I have not managed to identify the colors of the components.

 

C L U S T E R

NGC:1039

M: 34 R.A.: 02h.39m. Dec: 42º34'
Mag: 6.0 Dim: 18' AOC: 249 CNAO: 72
D.D.S.: 20h.24m.(UT); 22-Nov.-1984 (prisma)  

m34

 

            NOTE: It is a precious stellar accumulation. One is in a rich zone, is formed by forty stars of similar magnitude, without having a certain concentration towards the center.

 

D O U B L E

Nom: OS 25 R.A.: 02h.13m.

Dec: 56º'52

Mag: 6.4,7.2 Sep.: 103" P.A.: 202º Nat: op Spec.: ?, ?
AOC: 645 DSC: 455 D.D.S.: 23h.27m.(UT); 10-Aug.-1986

osigma25

 

                NOTE: One is in a very rich zone; immersed in accumulation NGC 869; one is about one shining very separated double and component; easy to locate it is unfolded with the eyeglass of 50x. Profit not to identify its colors.

 

D O U B L E

Nom: h 1143 R.A.: 02h.39m.

Dec: 42º34'

Mag: 8.0,8.0 Sep.: 20" P.A.: 249º Nat: f Spec.: ?, ?
AOC: 650 DSC: 459 D.D.S.:23h.57m.(UT); 10-Aug.-1986

h1143

 

           NOTE: One is immersed in the stellar accumulation M34. It is formed by two components of the same magnitude, slightly separated. One is one pretty double of inapreciables colors. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: q R.A.: 02h.41m.

Dec: 49º01'

Mag: 4.1,9.8 Sep.: 23" P.A.: 314º Nat: op Spec.: G, ?
AOC: 651 DSC: 460 D.D.S.: 00h.01m.(UT); 11-Aug.-1986

thseta

 

            NOTE: One is in a partially poor zone. There is a remarkable difference of brightness between the components, I create to observe it the main one of yellow color, however, secondary the profit not to identify it, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: h R.A.: 02h.47m.

Dec: 55º41'

Mag: 3.9,8.0 Sep.: 28" P.A.: 299º Nat: op? Spec.: K, ?
AOC: 652 DSC: 461 D.D.S.: 00h.09m.(UT); 11-Aug.-1986

eta

 

            NOTE: One is in a rich zone. There is a great difference of brightness, are little separated, the color of the main one is orange, however, I have not managed to identify the one of the secondary one; it is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 369 R.A.: 03h.14m.

Dec: 40º18'

Mag: 6.8,7.7 Sep.: 3.5" P.A.: 26º Nat: ph Spec.: B, A
AOC: 683 DSC: 490 D.D.S.: 22h.41m.(UT); 12-Sep.-1986

sigma369

 

                    NOTE: One is in a rich zone. A slight difference of brightness exists between both components, the distance that separates to them is minimum; the main one is of blue color, however, the secondary one is white; one is a pretty double, 7. It is unfolded without difficulty with the eyeglass of 100x.

 

D O U B L E

Nom: S 382 R.A.: 03h.21m.

Dec: 33º21'

Mag: 5.6, 9.1 Sep.: 4.5" P.A.: 154º Nat: ? Spec.: ?, ?
AOC: 684 DSC: 491 D.D.S.: 22h.53m.(UT); 12-Sep.-1986

sigma382

 

           NOTE: One is in a partially rich zone; an abysmal difference of brightness exists, are something together, I have not been able to manage to identify the colors of the components, easy to identify is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: S 391 R.A.: 03h.26m.

Dec: 44º52'

Mag: 7.8,8.6 Sep.: 3.9" P.A.: 95º Nat: f Spec.: M, A
AOC: 687 DSC: 494 D.D.S.: 23h.10m.(UT); 12-Sep.-1986

sigma391

 

            NOTE: One is in a rich zone. There is a slight difference of brightness, are slightly separated; unfolding itself with the eyeglass of 200x, the main one is of red color, however, the secondary one is white, forming a pretty resistance, is located easily.

 

D O U B L E

Nom: S 430 R.A.: 03h.35m.

Dec: 44º39'

Mag: 7.8, 8.0 Sep.: 41" P.A.: 95º Nat: f? Spec.: A, A
AOC: 688 DSC: 495 D.D.S.: 23h.18m.(UT); 12-Sep.-1986

s430

 

            NOTE: One is in a rich zone. There is a smallest difference of brightness between the components, are slightly separated, is unfolded without difficulty with the eyeglass of 50x, both components are white. One is one pretty double.

 

D O U B L E

Nom: S 426 R.A.: 03h.37m.

Dec: 38º58'

Mag: 8.0, 9.2 Sep.: 20" P.A.: 339º Nat: ? Spec.: K, A
AOC: 689 DSC: 496 D.D.S.: 23h.24m.(UT); 12-Sep.-1986

sigma426

 

            NOTE: One is in a partially rich zone. A remarkable difference of brightness exists between both components; the main one is orange, however, the secondary one I see white it; they are slightly separated unfolding itself with the eyeglass of 50x.

 

D O U B L E

Nom: S 434 R.A.: 03h.40m.

Dec: 38º12'

Mag: 8.0,8.6 Sep.: 33" P.A.: 85º Nat: op Spec.: K, M
AOC: 690 DSC: 497 D.D.S.: 23h.32m.(UT); 12-Sep.-1986

sigma434

 

            NOTE: One is in a partially rich zone. There is a small difference of brightness between the components, the main one is orange, however, the secondary one is red. Easy to locate it is unfolded with the eyeglass of 50x. is one very pretty double, since its colorful one is spectacular, in addition to his delicate magnitude that him makes intriguing still more.

 

D O U B L E

Nom: S 447 R.A.: 03h.45m.

Dec: 38º11'

Mag: 8.2, 9.3 Sep.: 31" P.A.: 162º Nat:op Spec.: ?, ?
AOC: 691 DSC: 498 D.D.S.: 23h.36m.(UT); 12-Sep.-1986

sigma447

 

            NOTE: One is in a partially rich zone. A slight difference of brightness between both components, it exists profit to identify the colors of the components. Easy to locate it is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: No catalog. R.A.: 03h.53m.

Dec: 38º50'

Mag: 9.0, 9.3 Sep.: 40" P.A.: 150º Nat: ? Spec.: ?, ?
AOC: 692 DSC: 499 D.D.S.: 23h.41m.(UT); 12-Sep.-1986

ced499

 

            NOTE: One is in a partially poor zone. One is one catalogued but not identified double in the Sky Catalogue 2000.0; there is a smallest difference of brightness between the components, are slightly separated, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: Fr K R.A.: 03h.42m.

Dec: 39º50'

Mag: 9.5,10.0 Sep.: 40" P.A.: 140º Nat: ? Spec.: ?, ?
AOC: 693 DSC: 500 D.D.S.: 23h.47m.(UT); 12-Sep.-1986

frk

 

            NOTE: One is in a rich zone. There is a small difference of brightness, is one double of weak components, are separated slightly, profit not to identify the colors, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: z R.A.: 03h.51m.

Dec: 31º44'

Mag: 2.9,9.5 Sep.: 8" P.A.: 207º Nat:op Spec.: K, A
AOC: 698 DSC: 505 D.D.S.: 00h.20m.(UT); 13-Sep.-1986

D O U B L E

Nom: No catalog. R.A.: 03h.53m.

Dec: 31º00'

Mag: 8.0,8.5 Sep.: 30" P.A.: 220º Nat: ? Spec.: ?, ?
AOC: 699 DSC: 506 D.D.S.: 00h.22m.(UT); 13-Sep.-1986

zeta & CED 506

 

               NOTE: z Persei: One is located in a rich zone. Its identification is easy, is a highest difference of brightness between the components, the main one is anarnjada, however, the secondary one is white.

                CED 506: One is to 40' to the west of z Persei. One is one catalogued but not identified double in the Sky Catalogue 2000.0. One is one double of weak components and with a slight difference of brightness, it is unfolded without difficulty with the eyeglass of 50x, due to the brightness weakness profit not to identify the colors. One is one pretty double.

 

D O U B L E

Nom: OS 44 R.A.: 04h.14m.

Dec: 46º05'

Mag: 7.2,7.9 Sep.: 58" P.A.: 321º Nat: op? Spec.:A, B
AOC: 752 DSC: 551 D.D.S.: 21h.42m.(UT); 28-Feb.-1987

osigma44

 

            NOTE: One is in a partially rich zone. They have very similar magnitudes, the brightness difference is of 0.7. They are something separated, the main one I see white it, and secondary the blue one. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom:S 512 R.A.: 04h.12m.

Dec: 45º16'

Mag: 8.7,8.8 Sep.: 5.2" P.A.: 320º Nat: f Spec.: ?, ?
AOC: 753 DSC: 552 D.D.S.:21h.48m.(UT); 28-Feb.-1987

sigma512

 

                NOTE: One is in a partially rich zone. A smallest difference of brightness exists, are together, which implies that it is possible to be unfolded with difficulty with 50x. Both components I cannot manage to identify the color.

 

D O U B L E

Nom: S 445 R.A.: 04h.17m.

Dec: 50º08'

Mag: 7.2,8.0 Sep.: 72" P.A.: 325º Nat: op Spec.: A, B
AOC: 754 DSC: 553 D.D.S.: 21h.55m.(UT); 28-Feb.-1987

D O U B L E

Nom: S 519 R.A.: 04h.17m.

Dec: 50º15'

Mag: 7.4,9.4 Sep.: 18" P.A.: 345º Nat: op Spec.: G, ?
AOC: 755 DSC: 554 D.D.S.: 21h.55m.(UT); 28-Feb.-1987

s445 & Sigma 519

 

           NOTE: S 445: One is in a rich zone. A small difference of brightness exists, are very separated, the main one is white, however, the secondary one is bluish. Forming an optical pair, dsin is unfolded difficulty with the eyeglass of 50x.

            S 519: A remarkable difference of brightness between the components exists, are slightly separated, the main one is yellow, however, I do not identify the color of the secondary one, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 533 R.A.: 04h.21m.

Dec: 34º12'

Mag: 7.4,8.7 Sep.: 20" P.A.: 63º Nat: ? Spec.: A, B
AOC: 756 DSC: 555 D.D.S.:22h.01m.(UT); 28-Feb.-1987

D O U B L E

Nom: OS 81 R.A.: 04h.21m.

Dec: 33º51'

Mag: 5.6,8.8 Sep.: 4.5" P.A.: 25º Nat: op Spec.: A, ?
AOC: 757 DSC: 556 D.D.S.: 22h.06m.(UT); 28-Feb.-1987

sigma533 & OSigma 81

 

            NOTE: S 533: One is in a partially rich zone. There is a remarkable difference of brightness, are slightly separated, but not much. The main one I see white it, however, the secondary one seems to me blue. It is unfolded without difficulty with the eyeglass of 50x.

            OrS 81: There is an enormous difference of brightness. One is to 20' to the south of S 533, it is a pair very united, is needed the eyeglass 100x to unfold it, the main one I see blanc it, however, secondary the profit not to identify the colors.

 

C L U S T E R

NGC:1245

M:-- R.A.: 03h.11m. Dec: 47º03'
Mag: 8.4 Dim: 13' AOC: 850 CNAO: 215
D.D.S.: 00h.09m.(UT); 20-Aug.-1987  

ngc1245

 

                NOTE: One is in a very rich zone. It is a stellar accumulation formed by twelve stars of the novena, 9,5 and 10 magnitude. One is a quite pretty stellar accumulation and peculiar, the direction of the accumulation is of 30º.

 

C L U S T E R

NGC:1342

M:-- R.A.: 03h.30m. Dec: 37º15'
Mag: 7.0 Dim: 15'x8' AOC: 851 CNAO: 216
D.D.S.: 00h.16m.(UT); 20-Aug.-1987  

D O U B L E

Nom: No catalog. R.A.: 03h.29m.

Dec: 37º15'

Mag: 8.0,8.3 Sep.: 30" P.A.: 10º Nat: ? Spec.: ?, ?
AOC: 852 DSC: 637 D.D.S.: 00h.18m.(UT); 20-Aug.-1987

ngc1342

         

            NOTE: NGC 1342: One is in a rich zone. It is a precious stellar accumulation, formed by 16 stars of 8ª, 9ª and 10ª magnitude. Oriented with an angle of position of 320º.

            CED 637: One is one catalogued but not identified double in the Sky Catalogue 2000.0; one is located to 20' to the west of NGC 1342, of is approximated eighth magnitude, although with a slight difference of brightness, they are slightly separated. I have not managed to identify the colors of both components.

 

C L U S T E R

NGC: 1444

M:-- R.A.: 03h.46m. Dec: 52º31'
Mag: 9.4 Dim: 5' AOC: 853 CNAO: 217
D.D.S.: 00h.31m.(UT); 20-Aug.-1987  

ngc1444

 

           NOTE: One is in a rich zone. One is a weak stellar accumulation and very small, a cloudiness is observed that surrounds to three immersed stars in the accumulation. It is identified without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 270 R.A.: 02h.27m.

Dec: 55º20'

Mag: 7.0,8.5 Sep.: 10" P.A.: 330º Nat: ? Spec.: A, M
AOC: 854 DSC: 638 D.D.S.: 23h.22m.(UT); 20-Aug.-1987

D O U B L E

Nom: S 268 R.A.: 02h.26m.

Dec: 55º18'

Mag: 6.8,8.2 Sep.: 2.7" P.A.: 128º Nat:f Spec.: A,M
AOC: 855 DSC: 639 D.D.S.: 23h.24m.(UT); 20-Aug.-1987

sigma270 & 268

 

            NOTE: S 270: One is in a rich zone. There is a slight difference of brightness between the components, are something separated, the main one I see white it, however, the secondary one I see it red. It is unfolded with the eyeglass of 50x.

            S268: One is to 15' to the west of S 270. There is a remarkable difference of brightness between the Componentes, the main one I see white it, however, the secondary one I see it red. It is identified and it is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: h 2139 R.A.: 02h.27m.

Dec: 52º53'

Mag: 8.8,8.8 Sep.: 3.5" P.A.: 120º Nat: f Spec.: ?, ?
AOC: 856 DSC: 640 D.D.S.: 23h.22m.(UT); 20-Aug.-1987

h2139

 

            NOTE: One is in a partially rich zone. Both components are of the same magnitude, are very together, desdobal with the eyeglass of 200x, the colors are inaccessible.

 

D O U B L E

Nom: h 2143 R.A.: 02h.30m.

Dec: 57º19'

Mag: 8.2,8.8 Sep.: 23" P.A.: 20º Nat: f Spec.: A, M
AOC: 857 DSC: 641 D.D.S.: 23h.39m.(UT); 20-Aug.-1987

h2143

            NOTE: One is in a partially rich zone. There is a slight difference of brightness, are something separated, the main one I see white it, however, the secondary one I see it red. It is unfolded with the eyeglass of 50x.

 

D O U B L E

Nom: S 297 R.A.: 02h.41m.

Dec: 56º20'

Mag: 8.3,8.7 Sep.: 16" P.A.: 280º Nat: f Spec.: A, B
AOC: 859 DSC: 643 D.D.S.: 23h.47m.(UT); 20-Aug.-1987

sigma297

 

            NOTE: One is in a rich zone. There is a slight difference of brightness between the components, are something separated, the main one is white, and secondary the bluish one. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 301 R.A.: 02h.44m.

Dec: 53º48'

Mag: 7.6,8.8 Sep.: 8.1" P.A.: 15º Nat: f Spec.: K, B
AOC: 860 DSC: 644 D.D.S.: 23h.52m.(UT); 20-Aug.-1987

sigma301

 

               NOTE: One is in a zone not very rich. It is a pair formed by two stars with a slight difference of brightness, are something together, unfolding itself with the eyeglass of 50x, the main one I see it orange, however, the secondary one seems to me bluish

 

D O U B L E

Nom: S 314 R.A.: 02h.49m.

Dec: 52º47'

Mag: 6.4,7.1 Sep.: 1.7" P.A.: 312º Nat: ph Spec.: B, B
AOC: 861 DSC: 645 D.D.S.: 00h.05m.(UT); 21-Aug.-1987

sigma314

 

                NOTE: One is in a partially poor zone. There is a slight difference of brightness, is a pair very united, being needed the eyeglass 200x, and one transparent night. In her it is appraised two very together suns of blue color. One is a pair of long period nondetermined; between 1830 and 1972 B it has increased to 0,2"and the angle of position 15º.

 

D O U B L E

Nom: S 336 R.A.: 02h.58m.

Dec: 32º12'

Mag: 6.8,8.4 Sep.: 8.4" P.A.: Nat:f? Spec.: K, B
AOC: 862 DSC: 646 D.D.S.: 00h.09m.(UT); 21-Aug.-1987

sigma336

 

                NOTE: One is in a partially rich zone. There is a remarkable difference of brightness between the components, the main one I see it orange, however, the secondary one seems to me blue. It has, therefore, a fort resistance of colors. One is one pretty double, is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 364 R.A.: 03h.10m.

Dec: 38º57'

Mag: 9.0,9.0 Sep.: 12" P.A.: 310º Nat: ? Spec.: G, G
AOC: 863 DSC: 647 D.D.S.: 00h.13m.(UT); 21-Aug.-1987

sigma364

 

                NOTE: One is in a partially rich zone. The pair is formed by two stars of the same magnitude, are slightly separated, is unfolded without difficulty with the eyeglass of 50x, both have a smooth yellowish tonality, although I am not absolutely safe due to the weakness of the components. One is one pretty double.

 

 

ori.gif (1448 bytes) Otras constelaciones

   A continuación en la siguiente ventana podéis seleccionar la constelación que queráis localizar, observar y descubrir siguiendo con la temática del web de Masm.

Masm © (Ultima actualización 14-nov-2004