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C O M A B E R E N I C E |
Mythology and history
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The Hair of Berenice, according to a legend, Berenice, wife of a king of Egypt, cut the hair in fulfillment of a vote and it hung it in the temple of Venus, of where it disappeared, provoking the wraths of the king. In order to calm the astronomer to him of the cut it said then that the braids of the queen had been taken to the sky by Jupiter. The constellation, visible mainly in spring in the northern sky, appears rather like a diffuse brilliance that as a differentiated star set. |
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Characteristics
Coma Berenice forms a constellation of about 400 square degrees nailed to the north with Venatici Dogs, to the east with the constellations of Ursa Major and Leo, to the south with Virgo and the west with Bootes. One is in visible the North latitude of 20º in both hemispheres during the months of February to August.
The galactic North Pole of the Milky Route is nailed in this constellation, of ahi that is in rich a very poor zone in stars and in galaxies. The constellation of Coma Berenice I located the 1 to it of April of 1986 at the age of 18 years from the locality of Dog situated Picafort in Majorca, Spain.
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Main stars Alpha, a; of Diadem name, yellow magnitude 4.32 of color; light of us is to 47 years. Beta, b; of 4.25 magnitude and yellow color, light is to 29 years, its brightness is identical to the lot. Gamma, g; magnitude 4.34 and of orange color, is to 170 years light of us.
Other objects M 53; spectacular globular cluster of magnitude 7,70. Earth light is to 60,000 years, has an angular diameter of 12,6' formed by stars of doceava magnitude. M 64; galaxy of Sb type, brightness 8.50 of 10'x5 ' of diameter. M 85; galaxy of the S0 type of magnitude 9.10 of 7'x5 ' of diameter. M 88, spiral galaxy Sb or Sc and magnitude 9.60, have a diameter of 6'x3 ' of arc. |
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Observations
by telescope
D O B L E |
Nom: 2 | A.R.: 12h.02m. | Dec: 21º44' |
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| Mag: 6.0,7.5 | Sep.: 3.8" | A.P.: 328º | Nat:f | Esp:B,A |
| COO: 551 | CED: 396 | F.D.E.: 21h.18m.(UT);1-Abr.-1986 (Prisma) | ||

NOTE: It is one double that is located in a very poor zone; there is a remarkable difference of magnitude, nothing less than an average magnitude and; meetings are enough, an eyeglass is needed 100x to unfold it and to observe main of bluish color and the secondary white
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GALAXIA |
NGC: 4571 |
M: 91 |
A.R.: 12h.34m. |
Dec: 14º30' |
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Mag: 10.6 |
Dim:2'x1.5' | COO: 571 | COCN: 172 | ||
| F.D.E.: 23h.03m.(UT);1-Abr.-1986 | |||||

NOTE: It is a somewhat weak galaxy of brightness, practicamente is circular and condensed in a brightness layer, it is of the S type; and it is identified easily.
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GALAXIA |
NGC:4548 |
M:-- |
A.R.: 12h.33m. |
Dec: 14º16' |
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Mag:10.8 |
Dim:5'x2' | COO: 574 | COCN: 175 | ||
| F.D.E.: 23h.20m.(UT);1-Abr.-86 (prisma) | |||||

NOTE: It is a slightly weak galaxy of brightness, it is observed almost of song, it is of striped type SBb, two layers of brightness are distinguished perfectly corresponding to the nucleus and the spiral arms. It is a pretty galaxy.
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D O B L E |
Nom: S 1633 | A.R.: 12h.21m. | Dec: 27º03' |
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| Mag: 7.0,7.1 | Sep.: 9.0" | A.P.: 245º | Nat:? | Esp:F,A |
| COO: 893 | CED: 675 | F.D.E.: 23h.34m.(UT);18-Jun.-1988 | ||

NOTE: One is in a very poor zone; both components are of the same magnitude, are slightly separated, as much the main one as the secondary one I see them of white color, although the phantom of the main one is F, is unfolded without difficulty with the eyeglass of 50x.
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D O B L E |
Nom:12 | A.R.: 12h.22m. | Dec: 25º51' |
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| Mag: 4.8,8.3 | Sep.: 65.2" | A.P.: 167º | Nat:? | Esp:F,A |
| COO: 894 | CED: 676 | F.D.E.: 23h.38m.(UT);18-Jun.-1988 | ||

NOTE: One is in a partially rich zone; there is a remarkable difference of brightness, is components AC since the component B is not visible with the R-90mm., both components I see white them, is unfolded without difficulty with oular of 50x.
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D O B L E |
Nom:17 | A.R.: 12h.29m. | Dec: 25º55' |
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| Mag: 5.3,6.6 | Sep.: 145.4" | A.P.: 251º | Nat: ? | Esp:A,A |
| COO: 895 | CED: 677 | F.D.E.: 23h.41m.(UT); 18-Jun.-1988 | ||

NOTE: One is in a poor zone; there is a slight difference of brightness between the components, are very separated unfolding itself already with the eyeglass of 50x, both I see them of white color.
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D O B L E |
Nom:24 | A.R.: 12h.35m. | Dec: 18º23' |
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| Mag: 5.2,6.7 | Sep.: 20.3" | A.P.: 271º | Nat:? | Esp: K,A |
| COO: 896 | CED: 678 | F.D.E.: 23h.45m.(UT); 18-Jun.-1988 | ||

NOTE: One is in a very poor star field, 1; a remarkable difference of brightness exists, are something separated, unfolding itself with the eyeglass of 50x, the main one I see it orange, however, the secondary one I create to see it of green color, it is clear that its phantom is A.
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D O B L E |
Nom:S 1678 | A.R.: 12h.45m. | Dec: 14º22' |
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| Mag: 6.8,8.5 | Sep.: 34.1" | A.P.: 181º | Nat:? | Esp:A,K |
| COO: 897 | CED: 679 | F.D.E.: 23h.51m.(UT); 18-Jun.-1988 | ||

NOTE: One is in a very poor zone; there is a remarkable difference of brightness between the components of white color and orange, it is unfolded without difficulty with the eyeglass of 50x.
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D O B L E |
Nom:S 1685 | A.R.: 15h.52m. | Dec: 19º10' |
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| Mag: 7.3,7.9 | Sep.: 16.0" | A.P.: 202º | Nat:? | Esp:F,B |
| COO:898 | CED: 680 | F.D.E.: 23h.55m.(UT); 18-Jun.-1988 | ||

NOTE: One is in a poor zone; there is a slight difference of brightness between the components of yellow color and blue, it is unfolded without difficulty with ocualr of 50x.
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D O B L E |
Nom: 32 | A.R.: 12h.52m. | Dec: 17º04' |
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| Mag: 6.3,6.7 | Sep.: 95.2" | A.P.: 49º | Nat: ? | Esp:K,F |
| COO: 899 | CED: 681 | F.D.E.: 23h.58m.(UT); 18-Jun.-1988 | ||

NOTE: One is in a field very, very poor, 1; there is a small difference of brightness, are very separated unfolding itself without problems with the eyeglass of 50x, the main one I see orange and the secondary one it of white color.
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D O B L E |
Nom:S 1686 | A.R.: 12h.50m. | Dec: 15º18' |
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| Mag: 8.0,8.5 | Sep.: 10" | A.P.: 45º | Nat:? | Esp: ?,? |
| COO: 900 | CED: 682 | F.D.E.: 00h.00m.(UT); 19-Jun.-1988 | ||

NOTE: One is in a very poor zone; there is a slight difference of brightness, are something separated the components, profit not to identify the colors, one is one delicate and fine double that is unfolded with the eyeglass of 50x.
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D O B L E |
Nom:OS 266 | A.R.: 13h.28m. | Dec: 15º43' |
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| Mag: 8.4,8.9 | Sep.: 2.0" | A.P.: 351º | Nat:? | Esp:F,? |
| COO:901 | CED: 683 | F.D.E.: 00h.05m.(UT); 19-Jun.-1988 | ||

NOTE: One is in a somewhat poor zone in stars; there is a slight difference of brightness between the components of weak magnitude and of nonidentifiable colors, it is unfolded with the eyeglass of 50x.
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D O B L E |
Nom:S 1760 | A.R.: 13h.34m. | Dec: 26º16' |
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| Mag: 8.8, 8.8 | Sep.: 8.6" | A.P.: 65º | Nat:? | Esp:F,? |
| COO: 902 | CED: 684 | F.D.E.: 00h.09m.(UT); 19-Jun.-1988 | ||

NOTE: One is in a rich zone; one is one double of identical magnitude in both tight components and something unfolding itself with the eyeglass of 50x, due to it, I do not identify the colors.
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D O B L E |
Nom:S 1687 | A.R.: 12h.53m. | Dec: 21º14' |
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| Mag: 5.1,9.1 | Sep.: 28.7" | A.P.: 126º | Nat:? | Esp: K,B |
| COO: 932 | CED: 711 | F.D.E.: 23h.23m.(UT); 20-Ene-1990 | ||

NOTE: One is in a poor zone; there is a remarkable difference of brightness between the components that correspond to A and C; they are slightly separated, the main one I see it of orange color, however, I create to see it of blue color the C.
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Other constellations
Next in the following window you can select the constellation that you want to locate, to observe and to discover following with the thematic one of the Web of Masm.
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Masm (Last update 2004-02-08)