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A Q U I L A

 

ori.gif (1448 bytes) Mythology & history

Mitología de Aquila

     Aquila or the Eagle is a boreal constellation that is well-known from the antiquity, because it already is mentioned in the babylonian inscriptions year 1000 b.C.; its more shining star, Altair, mean in arab "Eagle flying".  Mythologycaly at its moment, was the own Zeus who turned eagle drags to the Mount Olympus to new chosen the Ganimedes young person cobut of the Gods. Tolomeo, on the contrary, includes in its Almagesto the name of Antinoo, intimate friend of Adriano and that suffocated in the Nile year 131 a. C.

 

ori.gif (1448 bytes) Characteristics  

    Aquila, is an important constellation that it is in the celestial equator with a magnificent shining star, Altair presiding over it. When being in the celestial equator the constellation culminates to 50º for boreal & austral latitudes of 40º during the months of August & September, but due to the extension of same the northern limits they vice versa reach 65º of elevation and the meridionals 35º after latitudes of 40º in the North hemisphere and after southern latitudes. During the nights of August we see it happen slowly in meridian between the 21 & 23 local time, unfolding all the beauty of its celestial gems, Altair and its other two stars who accompany it by the northeastern part.

    It limits the north with Sagitta, the east with Hercules, Ophiuchus, Serpens Cauda, to the south with Scutum, Sagittarius & Capricornius and to the west with Aquarius & Delphinus.

    By the Eastern sector of the constellation it crosses the galactic equator therefore, we were before a rich constellation in stellar, globular, cloudy accumulations diffuse and therefore, stars in formation and also, why not, you novate and you supernovate well-known that has appeared in Aquila as the impressive Nova of 1918, or the one that it took place at year 389  a. C., not far from Altair.

    If for a moment we could be moved to a planet of the system of Altair that is to 15 years light of us, as soon as we would notice difference some with the configuration of the constellations, only Centarui alpha would be had displaced towards the Hidra, Sirius would shine weaker than Betelgeuse & Rigel, almost in the same site in which we see it at the moment, forming even with b Canis Majoris. The Maxima surprise would be not to see Altair between the other stars of Aquila, that would conserve the same disposition. And change, would cost certain work to locate to us in the constellation of Monoceros a weak yellowish star of magnitude 3.7 that nonfigure in the celestial maps. Nova? Our Sun.

    The constellation of Aquila I located April 17th, 1982 when I was 15 years-old.

   

Constelación de Apus

 

Estrellas principales

       Alfa, a; named Altair, from arab Elnars-el-tair or great flying eagle, with a magnitude of 0,90 its colour is white one, tipus, A, it's located to 15 light-years.

      Beta, b; named Alshain of magnitude of 3,3, its colour is yellow-orange one, it's located to 44 years-old,  it's 5 times more luminosity that our Sun.

    Gamma, g; named Tarazed, of magnitude 2,80, yellow colour that it's located to 460 years-old, it's a giant yellow star 1400 times more luminosity that our Sun.

    Delta, d; blue-white star of magnitude 3,0; it's located at the center of the constellation to 50 light-years so far.

   Eta, h; variable star, whose type is cepheid whose curve of light you can observe in Web, that varies between magnitudes 3.90 & 5.10 in a period of 7.18 days, of yellow colour.  

Other objets

          NGC 6738: Stellar cluster of magnitude 8.30 it was a little concentration towards the center, and 15' of angular diameter.

           NGC 6755: Magnitude betwen 14 star accumulation from 12 to, is a very rich cluster with a joint brightness of 7,50; it has a diameter of 14' of arc and light of us is to 5,000 years. It has an age of 35 million years.

 

ori.gif (1448 bytes) Telescopical observations

D O U B L E

Nom:S 2425 R.A.: 18h.59m.

Dec: -08º12'

Mag: 8.6,8.8 Sep.: 31" P.A.: 180º Nat:f? Spec:G,G
AOC: 1 DSC: 1 D.of D.S.:00-July-1983

sigma2425

    NOTE: One is in a partially rich zone, is a slight difference of magnitude, are slightly separated, both are yellow, is unfolded without difficulty with the eyeglass of 50 increases

D O U B L E

Nom: 15h R.A.: 19h.03m.

Dec: 04º06'

Mag: 5.7,7.2 Sep.: 38" P.A.: 209º Nat:? Spec:K, M
AOC: 2 DSC: 2 D.of D.S.:00-July-1983

15h

    NOTE: One is in a somewhat rich zone; there is a remarkable difference of magnitude, the main one is orange, however, the secondary one is red, easy to locate is unfolded with the eyeglass of 50x.

D O U B L E

Nom: 5 R.A.: 18h.44m.

Dec: -01º01'

Mag: 5.9,7.5 Sep.: 13" P.A.: 122º Nat:f Spec:A,M
AOC: 3 DSC: 3 D.of D.S.:00-July-1983

5

        NOTE: One is in a partially rich zone; there is a remarkable difference of magnitude, being able to unfold with the eyeglass of 50x; the main one is white, however, the secondary one is red.

D O U B L E

Nom:S 2434 R.A.: 19h.00m.

Dec: -00º47'

Mag: 8.5,8.6 Sep.: 24" P.A.: 104º Nat: op Spec:?,?
AOC: 4 DSC: 4 D.of D.S.:00-July-1983

sigma2434

    NOTE: One is in a rich zone; there is a smallest difference of magnitude, profit not to identify the colors, is unfolded without difficulty with the eyeglass of 50x.

  

D O U B L E

Nom:S 2449 R.A.: 19h.03m.

Dec: 07º09'

Mag: 7.2,7.9 Sep.: 8.2" P.A.: 29º Nat:f Spec:G,B
AOC: 174 DSC: 113 D.of D.S.:23h.32m.(UT);24-July-1984

sigma2449

       NOTE: It is pretty a double one, is in a very rich zone; being the third star more shining of the field, a slight difference of magnitude between its components exists, that are the main yellow, & secondary the bluish one, the separation can be considered like ideal, is unfolded with the eyeglass of 50x.

D O U B L E

Nom:S 2446 R.A.: 19h.03m.

Dec: 06º29'

Mag: 7.0,9.1 Sep.: 9.4" P.A.: 156º Nat:? Spec:?,?
AOC: 175 DSC: 114 D.of D.S.:23h.37m.(UT);24-July-1984

sigma2446

    NOTE: One is to only 36' of S 2449, and therefore, one is in a rich zone; they are separated to a distance that it we can consider ideal but it has the disadvantage of having an important difference of brightness between the components which makes difficult the identification of the secondary one.

D O U B L E

Nom:57 R.A.: 19h.52m.

Dec: -08º22'

Mag: 5.8,6.5 Sep.: 35" P.A.: 171º Nat:f Spec:B,A
AOC:176 DSC: 115 D.of D.S.:19h.09m.(UT);19-Set-1984

D O U B L E

Nom:No catalog. R.A.: 19h.50m.

Dec: -09º00'

Mag: 9.0,10 Sep.: 60" P.A.: 275º Nat:? Spec:?,?
AOC: 177 DSC: 116 D.of D.S.:19h.16m(UT);19-Set-1984

57

     

    NOTE: 57 : One is in a zone shining of weak stars; it is one double pretty & easy to unfold with the eyeglass of 50x.

    CED 116: Aquilae is to 40' to south southeast of 57; is one catalogued but not identified double, she is weak, and more separated than the previous one, profit not to identify the colors.

D O U B L E

Nom:No catal. R.A.: 19h.48m.

Dec: -09º26'

Mag: 8.0,10.0 Sep.: 12" P.A.: 40º Nat:? Spec:K,B
AOC: 178 DSC: 117 D.of D.S.:19h.16m.(UT);19-Set-1984

ced117

    NOTE: One is one catalogued double but not identified until the moment, one is to only 20' of  DSC 116, the difference of magnitude very is appreciated and they are not very separated, its vague colors are something

   

D O U B L E

Nom:S 2644 R.A.: 20h.10m.

Dec: 00º43'

Mag: 6.9,7.2 Sep.: 3.0" P.A.: 209º Nat:f Spec:A,A
AOC: 179 DSC: 118 D.of D.S.:19h.35m.(UT);19-Set-1984

sigma2644

        NOTE: She is pretty double, a separated one solely by 3.0 "; it is unfolded perfectly with the eyeglass of 100x, both seem to be white, although I am not absolutely safe, between the components exists a slight difference of magnitude.

D O U B L E

Nom:S 2654 R.A.: 20h.13m.

Dec: -03º39'

Mag: 6.8,8.0 Sep.: 13" P.A.: 233º Nat:f Spec:A,M
AOC: 180 DSC: 119 D.of D.S.:20h.32m.(UT);19-Set-1984

sigma2654

    NOTE: He is pretty a double one, distinguishes the colors perfectly, the main one is white, however, the secondary one is completely red, is precious to observe both small balls illuminated the retina, is unfolded with the eyeglass of 50x.

D O U B L E

Nom:S 2661 R.A.: 20h.17m.

Dec: -02º24'

Mag: 8.3,9.5 Sep.: 24" P.A.: 341º Nat:f? Spec:G,A
AOC: 181 DSC: 120 D.of D.S.:20h.42m.(UT);19-Set-1984

sigma2661

        NOTE: One is in a rich zone, is a remarkable difference of magnitude between the components of the double, the main one has a darker color considering the secondary white, the main one to have to be yellowish.

D O U B L E

Nom:S 2447 R.A.: 19h.04m.

Dec: -01º25'

Mag: 6.8,9.2 Sep.: 14" P.A.: 340º Nat:? Spec:K,A
AOC: 186 DSC: 124 D.of D.S.:19h.16m.(UT);20-Set-1984

sigma2447

    NOTE: He is pretty double, a shining one; they are separated to a distance that can be considered ideal, is unfolded without difficulty with the eyeglass of 50x.

D O U B L E

Nom:23 R.A.: 19h.16m.

Dec: 01º00'

Mag: 5.8,9.7 Sep.: 3.5" P.A.: Nat:? Spec:K,A
AOC: 187 DSC: 125 D.of D.S.:19h.20m.(UT);20-Set-1984

23

    NOTE: One is in a rich zone; one is one double easy to identify by his brightness, is unfolded with the eyeglass of 100x, the main one is orange, however, the secondary one is white.

D O U B L E

Nom:S 2497 R.A.: 19h.17m.

Dec: 05º33'

Mag: 8.0,9.0 Sep.: 30" P.A.: 358º Nat:? Spec:A,B
AOC: 188 DSC: 126 D.of D.S.: 19h.27m.(UT);20-Set-1984

sigma2497

    NOTE: One is in a rich zone, it is observed a slight difference of magnitude, is one pretty, although weak double of brightness

D O U B L E

Nom:S 2498 R.A.: 19h.18m.

Dec: 03º57'

Mag: 8.4,9.0 Sep.: 12" P.A.: 12º Nat:f Spec:A,B
AOC: 189 DSC: 127 D.of D.S.:19h.36m.(UT);20-Set-1984

sigma2498

    NOTE: One is in a rich zone, the separation she is moderate, there is a small difference of magnitude, is weak, but pretty, their colors are distinguished perfectly.

D O U B L E

Nom:S 2404 R.A.: 18h.48m.

Dec: 10º55'

Mag: 6.9,8.2 Sep.: 3.5" P.A.: 180º Nat:f Spec:M,A
AOC:192 DSC:129 D.of D.S.:18h.53m.(UT);21-Set-1984

sigma2404

    NOTE: One is in a rich field; it is one very pretty double, it is necessary to use the eyeglass of 100x to unfold it, and in her to observe two precious suns of color, main red and the secondary white, everything a spectacle.

D O U B L E

Nom: A11 R.A.: 18h.57m.

Dec: 03º25'

Mag: 9.0,9.0 Sep.: 16" P.A.: 288º Nat:f? Spec:A,A
AOC: 193 DSC: 130 D.of D.S.: 19h.01m.(UT);21-Set-1984

a11

        NOTE: It is one weak double, and pretty, they are something separated and one is in a rich zone, his colors are distinguished very well.

D O U B L E

Nom:11 R.A.: 18h.57m.

Dec: 13º33'

Mag: 5.5,9.2 Sep.: 16" P.A.: 288º Nat:op Spec:A,B
AOC: 194 DSC: 131 D.of D.S.:19h.07m.(UT);21-Set-1984

11

    NOTE: One is in a rich zone, is one weak double but pretty, the colors are distinguished perfectly

D O U B L E

Nom:S 2449 R.A.: 19h.03m.

Dec: 07º05'

Mag: 7.2,7.9 Sep.: 8.2" P.A.: 291º Nat:f Spec:A,B
AOC: 195 DSC: 132 D.of D.S.: 19h.14m.(UT);21-Set-1984

sigma2449-1

       NOTE: One is in a rich zone, is a slight difference of brightness, are united, although it is unfolded with the eyeglass of 50x.

D O U B L E

Nom:S 2519 R.A.: 19h.25m.

Dec: -09º38'

Mag: 8.8,8.9 Sep.: 11" P.A.: 124º Nat:? Spec:?,?
AOC: 196 DSC: 133 D.of D.S.:19h.22m.(UT);21-Set-1984

sigma2519

    NOTE: It's located at rich zone of stars, both ones are closed and they're the same magnitude, I think so both ones are blue ones but I'm not shure. It's a beatifull double star.

D O U B L E

Nom:S 2545 R.A.: 19h.36m.

Dec: -10º16'

Mag: 6.9,8.7 Sep.: 3.7" P.A.: 326º Nat:ph Spec:A,A
AOC: 197 DSC: 134 D.of D.S.:19h.34m.(UT);21-Set-1984

D O U B L E

Nom:S 2547 R.A.: 19h.36m.

Dec: -10º27'

Mag: 8.2,8.7 Sep.: 21" P.A.: 331º Nat:f Spec:B,?
AOC: 198 DSC: 135 D.of D.S.:19h.36m.(UT);21-Set-1984

sigma2545 y sigma2547

    NOTE: S 2545: It's located at rich zone of stars, there're a little differens of magnitude, it's doubled to 100x eyespieces, both ones are white ones.

   S 2547: It's located to 10' to south of  S 2545; it's a faint star, and more separated of last one, it's necesary the 50x eyepieces to see both ones, it's a beatifull double star.

D O U B L E

Nom:S 749 R.A.: 20h.25m.

Dec: -02º16'

Mag: 6.6,8.0 Sep.: 60" P.A.: 189º Nat:op? Spec:A,K
AOC: 362 DSC: 255 D.of D.S.:23h.12m.(UT);23-Jun-1985

s749

NOTE: It's located at zone not much poor, there're a great difference of magnitude, both ones are very separated, its colours means the same and we can see both ones without difficulty with 50x eyepiece.

D O U B L E

Nom: S 2562 R.A.: 19h.40m.

Dec: 08º16'

Mag: 7.0,8.7 Sep.: 27" P.A.: 251º Nat:f? Spec:A,B
AOC: 381 DSC: 271 D.of D.S.:22h.35m.(UT);14-July-1985

sigma2562

NOTE: It's located at rich zone, there're a much diference of magnitude, there're not much separated, its colours are diferents, its a beatiful double star and we can see them without dificulty with 50x eyepiece.

D O U B L E

Nom:Arg R.A.: 19h.46m.

Dec: 09º55'

Mag: 8.1,9.2 Sep.: 50" P.A.: 295º Nat:op Spec:K,B
AOC: 382 DSC: 272 D.of D.S.:22h.41m.(UT);14-July-1985

arg

NOTE: It's located at very rich zone of stars, there're a little difference of magnitude, both ones are so much separated, its colours are diferents and only it's necesary the 50x eyepiece to see both ones. It's located to  50' of g aquilae.

D O U B L E

Nom:S 2613 R.A.: 19h.59m.

Dec: -10º37'

Mag: 7.5,7.9 Sep.: 4.1" P.A.: 351º Nat:f Spec:K,A
AOC: 383 DSC: 273 D.of D.S.: 22h.54m.(UT);14-July-1985

sigma2613

NOTE: It's located to very rich zone of stars, there're a high diference of magnitude, both ones are closed, it's necesary the eyepiece of 100x to see both ones. One of them is orange and other white ones.

CLUSTER

NGC:6709

M:--

R.A.: 18h49m

Dec: -10º37'

Mag:8.1

Dim:12' AOC: 384 C. of C.N.O.112
D.of D.S.:22h.37m.(UT);16-July-1985  

ngc6709

    NOTE: It's locates at rich zone of stars, they're 30 stars, it's a brillant cluster, easy to find it and luminosity, its forms means Y letter.

D O U B L E

Nom:S 2426 R.A.: 18h.58m.

Dec: 12º48'

Mag: 7.3,8.8 Sep.: 17" P.A.: 260º Nat:f Spec:M,B
AOC: 386 DSC: 275 D.of D.S.:21h.42m.(UT); 17-July-1985

sigma2426

    NOTE: It's located at very rich stars field. There're  a high difference of magnitude, we can see both ones with 50x eyepiece, Mean star is red one and secundary one is blue one.

D O U B L E

Nom:S 2436 R.A.: 18h.59m.

Dec: 08º41'

Mag: 8.4,9.1 Sep.: 31" P.A.: 312º Nat:op? Spec:K,B
AOC: 387 DSC:276 D.of D.S.:21h.49m.(UT);17-July-1985

sigma2436

    NOTE: It's located to very rich star zone, there're a notable difference of magnitude between stars, one of them it's orange one & secundary is blue one. We can see both ones with 50x eyepiece.

D O U B L E

Nom: OS 370 R.A.: 19h.10m.

Dec: 09º16'

Mag: 8.5,9.1 Sep.: 20" P.A.: 14º Nat:? Spec:K,B
AOC: 388 DSC: 277 D.of D.S.:21h.58m.(UT);17-July-1984

osigma370

NOTA: It's located at very rich of stars, there're a little difference of magnitude, mean star is orange one and secundary is blue one. We can see both ones with 50x eyepiece.

D O U B L E

Nom:OS 178 R.A.: 19h.13m.

Dec: 15º00'

Mag: 5.8,7.6 Sep.: 90" P.A.: 268º Nat:op Spec:K,B
AOC: 389 DSC: 278 D.of D.S.:22h.04m.(UT);17-July-1985

osigma178

NOTE: it's located at very rich of stars, there're a great differens of magnitude, both ones are so much separated easy to find it, we can see both ones with 50x eyepiece.

D O U B L E

Nom: S45App R.A.: 19h.40m.

Dec: -08º25'

Mag: 7.0,7.3 Sep.: 96" P.A.: 146º Nat:op Spec:B,A
AOC: 407 DSC:293 D.of D.S.:19h.54m.(UT);12-Oct-1985

sigma45app

    NOTE: It's located at very, very, very rich of stars, there're a little difference of magntiude, both ones are so much separated, but it's a very beatifull double star, we can see both ones with 50x.

D O U B L E

Nom:S 2443 R.A.: 19h.08m.

Dec: 16º51'

Mag: 6.1,10.6 Sep.: 21.5" P.A.: 277º Nat:? Spec:G,?
AOC: 907 DSC: 689 D.of D.S.:23h.48m.(UT);8-July-1988

sigma2443

NOTE: It's located at very, very rich of stars, there're a high difference of magnitude, I don't identify its colours, both ones are see them with 50x eyepiece.

 

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