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S E R P E N S   C A P U T

 

ori.gif (1448 bytes) Mythology and history

Mitología de Scutum

    The constellation of Serpens and Ophiuchus has been known for more than fifty centuries and the old ones saw in her the figure of a gigantic man narrowing one long serpent. Serpentario was called to him; but immediately the authentic human figure was distinguished (to which it was designated with the name of Greek origin Ofiuco, that it means: The one that takes the serpent; of the one of the winding reptile which, showing to the right and the left seems to move the long neck in direction the northwest (head of the serpent or Serpens Caput) while the western South flank of Ofiuco surrounds with its ring of great volume (tail of serpent or Serpens Tail). To 1930, the Astronomical Union the International fixed the limits that was to attribute to the different parts that are those that at the moment is known.

 

ori.gif (1448 bytes) Characteristics

        The constellation of Serpens appears since we have commented in two separated parts of the firmament by Ophiuchus, as much to the east as to the west of the constellation. According to the Astronomical Union the International deals with like an only constellation with the generic name about Serpens and the genitive Serpentis. However, in my particular case, of always I have considered to Serpens like two independent constellations with its own nomenclatures and observations differentiated clearly. In the following table I specify so much to you the genitivo and nominative case used in both constellations like its dates of location that as for me were in different datas.

Constellation Genitivo Date of location
Serpens Caput  (SCp) Serpens Caputis 15 of April of 1982, from the locality of Inca (Majorca)
Serpens Tail (SCd) Serpens Caudae 17 of April of 1982, from the locality of Inca (Majorca)

 

            When discovering them in different dates and since I have commented to you with observations by telescope different I considered to separate both constellations independently. In order to obtain the reduced nomenclature of both constellations I was based on which correspond to the constellations of the dogs, Canis Major and Canis Minor whose nomenclature is respectively CMa and CMi. That is to say, first letter "C" corresponds to the Canis=C constellation; second and also in capital letters to the first letter of the second word of the constellation, "M"; M=Major or Minor, and third, logically to distinguish them it logically corresponds to the second letter of the second word but this in a=Major and i=Minor small letter; therefore, CMa corresponds to Canis Major and CMi to Canise Minor. If the logic explained previously in the dogs we transferred to a the constellation of Serpens or constellations of Serpens Cauda and Serpens Caput the result he will be the following one:

1ª letter: The initial of the constellations: S of Serpens in capital letters. S

2ª letter: The initial of the second word of both constellations, Cauda and Caput, corresponds capital C exactly. SC

3ª letter: and to the definitive one to distinguish it would have them of being the second letter of both terms; but causal both have to the letter to small letter and as in the abbreviations of the constellations three are admitted at the most letters we must go to us by simple logic to the third letter of the second word; and it is there where we found the difference, for Tail third she would be to or very small and for Caput the very small letter p, but when looking for a unification of both constellations third will have to be a consonant therefore, of the letter or happens to become consonant d.  Therefore we have left that for the constellation of Serpens Tail the result is SCd and for Serpens Caput SCp.

            The constellation of Serpens Caput is to the east of the constellation of Ophiuchus and in the celestial equator, he is observable in both hemispheres during the months of March to September. It limits the north with Corona Boeralis, the east with the constellations of Bootes and Virgo, the south with Libra and Ophiuchus and the west with Ophiuchus and Hercules. It is a medium constellation of 400º square nailed in the celestial equator and to 40º to the north of the equator of our galaxy, the Milky Route. Serpens Caput is formed by weak but visible stars at first, I located the 15 to it of April of 1982 at the age of 15 years from the Majorcan locality of Inca, Spain.

Constelación de Serpens Caput

 

Main stars

       Alpha, a; with a magnitude of 2.63 of color orange and located in the center of the constellation. Denominated Unukalhai or heart of the serpent, dista 73 years Earth light.

      Beta, b; with a magnitude of 3.66, light is to 153 years, its color is white of type A.  One is closely together located to the north of the constellation of the constellation of the Hercules, Hercules.

    Gamma, g; it stars yellow, of phantom F, whose magnitude is of 3.85 which light of us is closely together to 36 years located to the north of the constellation of Hercules.

 

Other objects

           M 5; spectacular globular cluster of magnitude 5.80 located to 25,000 years light of us, has an angular diameter of 17' of arc and a considered age of 220 million years, is formed by 500 stars of onceava to quinceava magnitude. It is located to the south of the constellation already near the constellations of Libra and Virgo.

 

 

ori.gif (1448 bytes) Observations by telescope

GLOBULAR CLUSTER

NGC:5904

M: 5

R.A.: 15h.16m.

Dec: 02º16'

Mag: 6.2 Dim: 13' AOC: 287 CNAO: 79
D.D.S.: 21h.22m.(UT); 9-Jun.-1985  

m5

 

        NOTE: One is in a rich zone. One is a precious globular accumulation, is characterized to be observed three different layers pertaining to the nucleus, periphery and the crown; and its proportion is 4:2:4.

 

D O U B L E

Nom: S 1931 R.A.: 15h.16m.

Dec: 10º37'

Mag: 7.0,8.0 Sep.: 13" P.A.: 167º Nat:op? Spec.: A, K
AOC: 288 DSC: 209 D.D.S.: 21h.34m.(UT); 9-Jun.-1985

sigma1931

 

        NOTE: One is in a partially rich zone. A perceivable difference of brightness between the components exists, are slightly separated, the main one I see secondary white it and the orange. One is one pretty double.

 

D O U B L E

Nom: d R.A.: 15h.32m.

Dec: 10º42'

Mag: 4.2,5.2 Sep.: 4.0" P.A.: 184º Nat: O Spec.: F, F
AOC: 289 DSC: 210 D.D.S.: 21h.42m.(UT); 9-jun.-1985

delta

 

            NOTE: One is in a rich zone. It is one precious, pretty and wonderful double. With a fort brightness although with a slight difference of magnitude and something together, both components have an appreciated and smooth yellowish color. It is unfolded without difficulty with the eyeglass of 100x, to be able to observe two precious small balls.

 

D O U B L E

Nom: S 1988 R.A.: 15h.54m.

Dec: 12º37'

Mag: 7.4, 8.1 Sep.: 1.9" P.A.: 256º Nat: ph Spec.: A, A
AOC: 290 DSC: 211 D.D.S.: 21h.56m.(UT); 9-Jun.-1985

sigma1988

 

            NOTE: One is in a partially rich zone. There is a slight difference of brightness between the components, are very tight, is unfolded with the eyeglass of 200x. In her it is observed two stars of off-white color.

 

D O U B L E

Nom: S 1985 R.A.: 15h.53m.

Dec: 12º37'

Mag: 7.4,8.1 Sep.: 6.0" P.A.: 352º Nat: ph Spec.: A, A
AOC: 291 DSC: 212 D.D.S.: 22h.04m.(UT); 9-Jun.-1985

sigma1985

 

            NOTE: One is in a somewhat rich zone. There is a slight difference of brightness between the components, are something together, is unfolded without difficulty with the eyeglass of 50x, both components I see white them.

 

D O U B L E

Nom: S 2007 R.A.: 16h.04m.

Dec: 13º27'

Mag: 6.6, 7.8 Sep.: 35" P.A.: 324º Nat: ? Spec.: A, B
AOC: 292 DSC: 213 D.D.S.: 22h.12m.(UT); 9-Jun.-1985

sigma2007

 

            NOTE: One is in a partially rich zone. One is one double pretty, easy to identify, are slightly separated, is unfolded with the eyeglass of 50x, the main one I see secondary white it and the blue one.

 

D O U B L E

Nom: S 1919 R.A.: 15h.10m.

Dec: 19º28'

Mag: 6.5, 7.2 Sep.: 24" P.A.: 10º Nat: ? Spec.: A, K
AOC: 299 DSC: 217 D.D.S.: 21h.33m.(UT); 10-jun.-1985 (Prisma)

sigma1919

 

            NOTE: One is in a somewhat rich zone. It is one pretty double, she is slightly separated, it is unfolded without difficulty with the eyeglass of 50x, the main one I see secondary white it and the orange.

 

D O U B L E

Nom: S 1987 R.A.: 15h.15m.

Dec: 03º'33

Mag: 7.2,8.7 Sep.: 10" P.A.: 322º Nat: f Spec.: A, M
AOC: 314 DSC: 226 D.D.S.: 21h.33m.(UT); 12.-Jun.-1985

sigma1987

 

           NOTE: One is in a zone not very rich. There is a remarkable difference of brightness, the main one I see white it, and secondary the red one. It is unfolded without difficulty with the eyeglass of 50x.

 

D O U B L E

Nom: S 2033 R.A.: 16h.16m.

Dec: -02º10'

Mag: 9.0, 9.0 Sep.: 10" P.A.: 165º Nat: f? Spec.: B, B
AOC: 592 DSC: 415 D.D.S.: 23h.27m.(UT); 10-May.-1986

sigma2033

 

            NOTE: One is in a rich zone. Both components are of the same magnitude, is unfolded without difficulty with the eyeglass of 50x, both, also, are blue.

 

D O U B L E

Nom: S 2031 R.A.: 16h.14m.

Dec: -01º31'

Mag: 7.0,9.1 Sep.: 21" P.A.: 230º Nat: f Spec.: A, B
AOC: 593 DSC: 416 D.D.S.: 23h.33m.(UT); 10-May.- 1986

sigma2031

 

            NOTE: One is in a rich zone. There is a remarkable difference of brightness between the components, are slightly separated, although it is unfolded without difficulty with the eyeglass of 50x, the main one I see white it, and secondary the bluish one.

 

D O U B L E

Nom: S 1952 R.A.: 15h.29m.

Dec: 09º50'

Mag: 8.2, 8.9 Sep.: 16" P.A.: 233º Nat: f Spec.: ?, ?
AOC: 773 DSC: 572 D.D.S.: 00h.04m.(UT); 29-March-1987

sigma1952

 

        NOTE: One is in a rich zone. There is a slight difference of brightness between the components, are slightly separated, although it is unfolded without difficulty with the eyeglass of 50x, profit not to identify the colors of both components.

 

D O U B L E

Nom: S 1990 R.A.: 15h.57m.

Dec: 21º56'

Mag: 8.7, 9.4, 9.5 Sep.(AB): 56"

Sep.(BC): 4.0"

P.A.(AB): 60º

P.A.(BC): 207º

Nat(AB): ?

Nat(BC): f

Spec.: B, B, ?
AOC: 776 DSC: 575 D.D.S.: 00h.20m.(UT); 29-March-1987

sigma1990

 

       NOTE: One is in a partially rich zone. There is a slight difference of brightness between components AB and BC. The double formed by AB is unfolded with 50x. Being observed both of blue color. However, the eyeglass of 100x is essential to unfold component BC. In her I have not been able to appreciate the color of the third component.

 

C L U S T E R

JH: 1292

M: -- R.A.: 15h.34m. Dec: 15º45'
Mag: 9.5 Dim: 16' AOC: 777 CNAO: 203
D.D.S.: 00h.34m.(UT); 29-March-1987  

jh1292

   

                NOTE: One is in a rich zone. One is a delicate stellar accumulation formed by fourteen 10,5 stars of tenth and magnitude, I create to observe the direction of 30º, has an appreciable concentration towards the center.

 

ori.gif (1448 bytes) Other constellations

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