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O P H I U C H U S

 

ori.gif (1448 bytes) Mythology and history

Mythology of Ophiuchus

       

     Ophiuchus was son ilegitim of Apolo with a called nymph Coronis, Asclepios, learned medicine of the Charon Centaur. Later he was the surgeon of the Argonautas, sailing with them in the ship Argus treating to give back the life to people, including the son of king Minos of Crete.
It was after Asclepios tried to relife to Orion, pricked by the Scorpion when Pluto complained to Zeus who if Asclepios acted to of this form doing inmortal to people, would rob all the town of Hades. And thus he was, Zeus did not allow more inmortalidades and sent rallo to kill Asclepios.                     

               Zeus put to Asclepios in a place of the sky near the Serpent  (Serpens Cauda and Serpens Caput) because this represented the renewed life.
           Whereas the cult to Asclepios began in Tesalia, temples through all Greece were constructed, arriving at Rome around year 300 b. C.
               The old sculptures show it with the discovered chest and carrying one long layer and grasping a cane with a coiled serpent (perhaps the precursor of the modern symbol of the medicine).     For that reason, Ofiuco is located in the middle of the constellation of Serpens (the Serpent) submerging its South zone in the Milky Route, reason why many objects can be enjoyed deep sky.

 

ori.gif (1448 bytes) Characteristics

          

Ophiuchus, is an enormous constellation that is located in the celestial equator very next to the nucleus of the Milky Route and in the opposed zone to Orion; he is observable during the months of April to October in both hemispheres without difficulty. It emphasizes as much by his drawn into squares form surrounded by stars in the east as in the west that represents Serpens or the serpent.

            The curiosity of Ophiuchus is that the ecliptic or the line where the Sun and the planets move crosses the constellation by the south during the first fortnight of December, therefore, in himself is a zodiacal but not recognized constellation like so since its South limit at first was assigned to Scorpius. In addition all the constellation is to 10º to the north of the galactic equator, therefore, in them we observed great amount of stars, stellar and like no, globular cluster.

          Ophiuchus limits of this with Serpens Caput (SCp), Libra and Scorpius, to the south with the constellation of Scorpius, to the west with the constellations of Sagittarius, Serpens Cauda (SCd) and Aquila; and finally to the north with Hercules.

             Ophiuchus was located the 17 of April of 1982 at the age of 14 years from the Majorcan locality of Inca, Spain.

 

Constelación de Ophiuchus

 

Main stars

       Alpha, a; denominated Rasalhague, of magnitude 2.09 and white color. Dista 46 years Earth light, is a star 25 times more luminous than the Sun is closely together in the north of the constellation of Hercules and in individual of a Herculi.

       Beta, b; denominated Cebalrai, of magnitude 2.77 and orange, dista color 82 years light, one is in the north of the constellation.

        Gamma, g; of 3.75 magnitude and white color, dista 95 years light, is closely together b Ophiuchi.

       Delta, d; denominated Yed Prior, about magnitude 2.73 and red, dista color 170 years light one is a red giant 183 times more luminous than our Sun is located closely together in the south of the constellation of Serpens Caput (SCp).

            

       Other objects

    M 10; precious globular cluster located to the north of the constellation, magnitude 6.6, 15' of angular diameter. Dista 14,600 years light.

      M 12; second spectacular globular cluster near previous of magnitude  6.6 and 14' of angular, dista diameter 17,000 years light.  

       M 14; globular cluster located to the east of the constellation, near Serpens Tail, its magnitude is of 7.60, has an angular diameter of 11' of arc and dista 33,000 years Earth light.

       M 107; globular cluster of magnitude 8.10 less spectacular than the previous ones located to the south of the constellation near Serpens Caput, its angular diameter is of 3,3' of arc, dista 20,000 years light of us.

       M 9; precious globular cluster located to the south of the constellation near Sagittarius, is in a field riquísimo in globular cluster, its magnitude is of 7.90, angular diameter 9,3' of arc and that dista 24,000 years light of us.        

 

 

ori.gif (1448 bytes) Observations by telescope

D O U B L E

Nom:53 R.A.: 17h.32m.

Dec: 09º37'

Mag: 5.8, 7.8 Sep.: 41" P.A.: 190º Nat:? Spec.:A,B
AOC: 216 DSC: 151 D.D.S.:19h.57m.(UT); 28-Sep.-1984

53

 

        NOTE: One is in a very rich zone; it is formed by a pair slightly separated, and with a remarkable difference of brightness, it is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom:S 2186 R.A.: 17h.33m.

Dec: 01º02'

Mag: 8.4,8.4 Sep.: 2.8" P.A.: 77º Nat:f? Spec.:A,A
AOC: 217 DSC: 152 D.D.S.:20h.03m.(UT); 28-Sep.-1984

sigma2186

 

            NOTE: One is in a rich zone; they are united, unfolding itself with the eyeglass of 100x, both components are white; one is one weak double of brightness and components of identical magnitude.

 

D O U B L E

Nom: S 2156 R.A.: 17h.25m.

Dec: 11º26'

Mag: 7.0, 8.5 Sep.: 27" P.A.: 283º Nat:? Spec.:A,K
AOC: 218 DSC: 153 D.D.S.:20h.06m.(UT); 28-Sep.-1984

sigma2156

 

        NOTE: One is in a rich zone; a remarkable difference of brightness between the components exists, are something separated, the main one is white, however, the secondary one is red-orange; it turns out to be one pretty double.

 

GLOBULAR CLUSTER

NGC:6218

M:12

R.A.: 16h.45m.

Dec: -01º52'

Mag: 6.6 Dim: 9' AOC: 294 AOCN: 80
D.D.S.:22h.26m.(UT); 9-Jun.-1985  

m12

 

        NOTE: One is M12; a precious globular cluster of Ophiuchus, is very dense, gradient, distinguishing itself two zones corresponding to the nucleus and to the periphery, it has a somewhat irregular aspect, his phantom is F7, is located to 5,500 pársec and the metalidad index is of 1.61.

 

GLOBULAR CLUSTER

NGC:6254

M:10

R.A.: 16h.55m.

Dec: -04º03'

Mag: 6.4 Dim:7' AOC: 295 AOCN: 81
D.D.S.:22h.35m.(UT); 9-Jun.-1985  

m10

 

        NOTE: One is a shining globular cluster, is more gradient and denser than M12, perfectly distinguish three zones of brightness corresponding to the nucleus, zone average and periphery; its phantom is F8, is located to 4,400 pársec and has an index of metalidad of -1.60.

 

D O U B L E

Nom: S 2122 R.A.: 17h.04m.

Dec: -01º35'

Mag: 6.2,8.5 Sep.: 20" P.A.: 278º Nat:f Spec.:?,?
AOC: 296 DSC: 215 D.D.S.:23h.08m.(UT); 9-Jun.-1985

sigma2122

 

            NOTE: One is in a partially rich zone; there is a remarkable difference of brightness between the components that profit not to identify its colors due in part to the weakness of brightness of secondary, the easy one to locate is unfolded with the eyeglass of 50x.

 

GLOBULAR CLUSTER

NGC:6402

M:14

R.A.: 17h35.m.

Dec: -03º13'

Mag: 7.1 Dim:3' AOC: 298 AOCN: 82
D.D.S.:23h.24m.(UT); 9-Jun.-1985  

m14

 

            NOTE: One is the third cluster of Ophiuchus in importance, is weaker, less granulated, but like in M10, also, three different zones from brightness are distinguished, their phantom is F8, is located to 10,200 pársec and has an index of metalidad of -1.39.

 

CLUSTER

IC:4665

M:-- R.A.: 17h.44m. Dec: 05º44'
Mag: 5.8 Dim:60' AOC: 300 AOCN: 83
D.D.S.:21h.42m.(UT); 10-Jun.-1985  

ic4665

 

            NOTE: One is an enormous stellar cluster formed by eighty stars of weak magnitude its structure is formed by two angles of position corresponding to 30º and to 120º, they are, also, frequent the alignments in H. The phantom of the youngest component is B3 and has an age of thirty and six million years.

 

D O U B L E

Nom:61 R.A.: 17h.42m.

Dec: 02º36'

Mag: 6.2,6.5 Sep.: 21" P.A.: 93º Nat:f Spec.:A,A
AOC: 301 DSC: 218 D.D.S.:21h.59m.(UT); 10-Jun.-1985

61

 

            NOTE: One is to only 40' to the west of r Ophiuchi, is a slight difference of brightness, are partially separated, is unfolded without difficulty with the eyeglass of 50x, one is about one double brilliant and white components.

 

D O U B L E

Nom: 70 R.A.: 18h.03m.

Dec: 02º32'

Mag: 4.1,6.2 Sep.: 2.0" P.A.: 339º Nat:O Spec.:K,M
AOC: 302 DSC: 219 D.D.S.:22h.19m.(UT); 10-Jun.-1985

70

 

                NOTE: One is in a partially rich zone; there is a remarkable difference of brightness, although it is formed by very shining components, the main one is orange, however, the secondary one is red, is one pretty double, is unfolded without difficulty with 50x.

 

D O U B L E

Nom:67 R.A.: 17h.58m.

Dec: 02º55'

Mag: 4.4,7.6 Sep.: 54" P.A.: 143º Nat:? Spec.: B,B
AOC: 303 DSC: 220 D.D.S.: 22h.24m.(UT); 10-Jun.-1985

67

 

            NOTE: One is in a rich zone; there is a remarkable difference of brightness between the components, although both are very shining and blue; they are very separated, almost 1'; therefore, it is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 2252 R.A.: 17h.56m.

Dec: 02º02'

Mag: 8.4, 8.7,  8.8 Sep.(AB): 4.0"

Sep.(AC): 94"

P.A.(AB): 25º

P.A.(AC): 163º

Nat(AB): f

Nat(AC): op

Spec.:A, B, G
AOC: 304 DSC: 221 D.D.S.: 22h.29m.(UT); 10-Jun.-1985

sigma2252

 

                NOTE: One is a triple easy to identify and of weak components of brightness, they have a slight difference of brightness although very little; component AB is unfolded with 100x, however, AB-C is unfolded with 50x; the main one is white, secondary the blue one, and the tertiary yellow, although due to the little brightness of the components profit not to be able to determine the certainty of it.

 

D O U B L E

Nom: t R.A.: 18h.00m.

Dec: -08º11'

Mag: 5.4,6.0 Sep.: 1.9" P.A.: 276º Nat: O Spec.:A,A
AOC: 305 DSC: 222 D.D.S.:23h.03m.(UT); 10-Jun.-1985

tau

 

            NOTE: One is in a rich zone; there is a slight difference of brightness between the components, are very united being needed an eyeglass 200x and in addition a good atmospheric transparency, both components are white.

 

PLANETARY NEBULAE

NGC:6572 M:--

R.A.: 18h.10m.

Dec: 06º50'

Mag: 9.6 Dim:16"x13" AOC: 306 AOCN: 84
D.D.S.:23h.36m.(UT); 10-Jun.-1985  

ngc6572

 

                NOTE: One is in a rich zone; its identification is not difficult due to the small cluster that there is in him; its disc is elliptical, and brilliant to average that we approached the star cause that is of magnitude 13.6; the phantom of the star is Of+WR; is located to 600 pársec.

 

CLUSTER

NGC:6633

M:-- R.A.: 18h.25m. Dec: 06º32'
Mag: 4.9 Dim:30'x8' AOC: 307 AOCN: 85
D.D.S.: 23h.40m.(UT); 10-Jun.-1985  

ngc6633

 

                NOTE: One is a precious and enormous stellar cluster. It has form of question, frankly very suggestive; it is formed by eighty stars; is located to 320 pársec, does not have a concentration towards the center, has a moderate difference of brightness, the phantom of the youngest star is B6 and has an age of 660 million years.

 

GLOBULAR CLUSTER

NGC:6333

M:9

R.A.: 17h.16m.

Dec: -18º28'

Mag: 7.3 Dim:9.3' AOC: 597 AOCN: 178
D.D.S.: 23h.59m.(UT); 10-May.-1986  

M9

 

                NOTE: One is the following globular cluster in importance of the saga of the Ophiuchus, appears weaker, smaller and with two zones of luminosity corresponding to the nucleus and the periphery; its phantom is F3, pársec is to about 7,000 and has an index of metalidad of -1.78.

 

GLOBULAR CLUSTER

NGC:6356

M:--

R.A.: 17h.21m.

Dec: -17º46'

Mag: 8.6 Dim:7.2' AOC: 598 AOCN: 179
D.D.S.: 00h.04m.(UT); 11-May.-1986  

ngc6356

 

                NOTE: It follows the saga, although this one was not discovered by Messier. Of reduced dimensions more and less spectacular one appears small and subtle; a gradual diminution of brightness is distinguished as we moved away of the nucleus and we deepened in the periphery; it is a older globular cluster, of G5 phantom, is located to a distance of 17,200 pársec and with an index of metalidad of -0.62.

 

CLUSTER

Cr:331 H:15

M:-- R.A.: 17h.26m. Dec: -29º29'
Mag: 9.2 Dim: 7' AOC: 599 AOCN: 180
D.D.S.: 00h.09m.(UT); 11-May.-1986  

H 15

 

            NOTE: One is in a rich zone; one is a weak, small stellar cluster formed by ten stars, is located to 2,800 pársec and dispersed.

 

D O U B L E

Nom: r R.A.: 16h.22m.

Dec: -23º20'

Mag: 5.2,5.9 Sep.: 2.9" P.A.: 338º Nat:ph Spec.: B,B
AOC: 783 DSC: 581 D.D.S.: 22h.26m.(UT); 2-May.-1987

rho

 

               NOTE: One is in a relatively poor star field, is a slight difference of brightness between the components, are very united being needed the eyeglass 200x to unfold it and to observe both blue components, is not complicated the identification due to its brightness.

 

GLOBULAR CLUSTER

NGC:6273

M:19

R.A.: 16h.59m.

Dec: -26º11'

Mag: 6.6 Dim: 5' AOC: 784 AOCN: 204
D.D.S.: 23h.23m.(UT); 2-May.-1987  

m19

 

                NOTE: One is a very pretty globular cluster, has a off-white color, I consider a gradient of 6, (1-10); one is an cluster perfectly to regulate and little dense; phantom is F5, is located to 10,600 pársec and has an index of metalidad of -1.68.

 

GLOBULAR CLUSTER

NGC:6266

M:62

R.A.: 16h.58m.

Dec: -30º03'

Mag: 6.6 Dim:4' AOC: 785 AOCN: 205
D.D.S.: 23h.30m.(UT); 2-May.-1987  

m62

 

                NOTE: One is in a partially rich field, 6; it has a off-white color, with a gradient of 3 (1-10); that is to say, the luminosity diminishes very little as we moved away of the nucleus, is a very pretty globular cluster, with an elevated density, its phantom is F8, is located to 6,000 pársec, with an index of -1.28.

 

D O U B L E

Nom: S 2048 R.A.: 16h.26m.

Dec: -08º00'

Mag: 6.8, 9.1 Sep.: 5.6" P.A.: 299º Nat: op? Spec.:M, A
AOC: 799 DSC: 594 D.D.S.: 21h.11m.(UT); 13-Jun.-1987

sigma2048

 

               NOTE: One is in a partially rich zone, 7; there is a remarkable difference of brightness between the components, are partially united, the main one is red, however, the secondary one is white; it is possible to emphasize the surprising red color of the main one, one is one very good double, is unfolded with the eyeglass of 200x.

 

D O U B L E

Nom: Sh 240 R.A.: 16h.54m.

Dec: -19º28'

Mag: 6.3,8.1 Sep.: 4.7" P.A.: 229º Nat:f Spec.:A,B
AOC: 800 DSC: 595 D.D.S.:21h.24m.(UT); 13-Jun.-1987

sh240

 

                NOTE: One is in a partially rich zone, 6; there is a remarkable difference of brightness between the components, is unfolded without difficulty with the eyeglass of 50x, the main one is white, however, the secondary one is bluish.

 

D O U B L E

Nom: h 589 R.A.: 17h.08m.

Dec: -24º53'

Mag: 8.4,8.7 Sep.: 10" P.A.: 305º Nat:f Spec.: A, A
AOC: 801 DSC: 596 D.D.S.: 21h.32m.(UT); 13-Jun.-1987

h589

 

                NOTE: One is in a partially rich zone, 6; there is a small difference of brightness between the components, is one weak double of brightness and not very together, it is unfolded with 50x, both components are white.

 

D O U B L E

Nom: 39 R.A.: 17h.15m.

Dec: -24º14'

Mag: 5.7,7.5 Sep.: 11" P.A.: 355º Nat: f? Spec.: K, F
AOC: 802 DSC: 597 D.D.S.: 21h.37m.(UT); 13-Jun.-1987

39

 

            NOTE: One is in a rich zone; there is a slight difference of brightness between his components, are something separated, the main one is orange, however, the secondary one is yellow. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: h 6964 R.A.: 17h.32m.

Dec: -11º12'

Mag: 5.8,8.8 Sep.: 55" P.A.: 225º Nat: op Spec.: M, A
AOC: 803 DSC: 598 D.D.S.: 21h.43m.(UT); 13-Jun.-1987

h6964

 

            NOTE: One is in a partially rich zone; there is a remarkable difference of brightness, are very separated, almost 1'; the main one is red, however, the secondary one is white, although I am not absolutely safe, easy to locate, is unfolded with the eyeglass of 50x

.

 

D O U B L E

Nom: S 694 R.A.: 17h.52m.

Dec: 01º07'

Mag: 6.8,7.1 Sep.: 81.8" P.A.: 237º Nat:? Spec.: K,A
AOC: 926 DSC: 707 D.D.S.: 23h.03m.(UT); 27-May.-1989

s694

            

            NOTE: One is in a rich zone; there is a smallest difference of brightness between the components, are very separated, unfolding itself with the eyeglass of 50x, the main one I see it orange, however, profit not to identify the color of the secondary one.

 

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