CANES
VENATICI
(Abbreviation: CVn).
One of Hevelius’ constellations, dating only from his maps of 1690, and evidently representing two hunting dogs (Asterion and Chara) which are being held by the herdsman Boötes – possibly to stop them from chasing the two bears round and round the celestial pole. The name of Cor Caroli was given to a² CVn by Edmond Halley in honour of King Charles 1. Cor Caroli (mag. 2.90) is the only star above the fourth magnitude. It is also the prototype ‘magnetic variable’.
BRIGHTEST STARS
|
STAR |
R.A. |
DEC |
MAG |
ABS.
MAG. |
SPEC |
DIST.
PC | ||||
|
H |
M |
S |
o |
‘ |
“ | |||||
|
8 b |
12 |
33 |
44.4 |
+41 |
21 |
26 |
4.26 |
4.5 |
GO |
9.2 CHARA |
|
12 a² |
12 |
56 |
01.6 |
+38 |
19 |
06 |
2.90 |
0.1 |
AOp |
20 COR
CAROLI |
|
20 |
13 |
17 |
32.5 |
+40 |
34 |
21 |
4.73 |
-0.7 |
FO |
52 |
|
24 |
13 |
34 |
27.2 |
+49 |
00 |
57 |
4.70 |
1.9 |
A4 |
35 |
DOUBLES
|
STAR |
R.A. |
DEC |
MAGS. |
P.A. |
DIST.” | ||||
|
H |
M |
S |
o |
‘ |
“ | ||||
|
12 a² |
12 |
56 |
01.6 |
+38 |
19 |
06 |
2.9,
5.4 |
228 |
FIXED |
VARIABLES
|
STAR |
R.A. |
DEC |
RANGE |
PERIOD,
D. |
SPEC |
TYPE | ||
|
H |
M |
o |
‘ | |||||
|
Y |
12 |
42.8 |
+45 |
43 |
5.1---6.6 |
158 |
N |
SEMI-REGULAR |
|
U |
12 |
44.9 |
+38 |
39 |
7.2---11.0 |
345 |
M |
MIRA |
|
TU |
12 |
52.7 |
+47 |
28 |
8.5---9.2 |
IRREGULAR |
M |
|
|
V |
13 |
17.3 |
+45 |
47 |
7.3---12.9 |
192 |
M |
MIRA |
|
R |
13 |
46.8 |
+38 |
47 |
7.3---12.9 |
328 |
M |
MIRA |
a²
is a magnetic variable, and optically variable over a very small range of less
then 0.1 magnitude.
CLUSTERS AND NEBULÆ
|
OBJECT |
R.A. |
DEC |
TYPE |
NOTES | ||
|
H |
M |
o |
‘ | |||
|
NGC
4143 |
12 |
07.1 |
+42 |
49 |
ELLIPTICAL
GALAXY |
MAG. 11. TYPE
E4 |
|
NGC
4151 |
12 |
08.0 |
+39 |
41 |
GALAXY |
MAG.
11.3 |
|
NGC
4220 |
12 |
13.7 |
+48 |
10 |
SPIRAL
GALAXY |
MAG. 12. TYPE
Sa |
|
NGC 4258 (M.
1.6) |
12 |
16.5 |
+47 |
35 |
SPIRAL
GALAXY |
MAG. 8.6. BORDERS OF
CVn |
|
NGC
4449 |
12 |
25.8 |
+44 |
22 |
IRREGULAR
GALAXY |
MAG.
9.2 |
|
NGC
4490 |
12 |
28.3 |
+41 |
55 |
SPIRAL
GALAXY |
MAG. 9.7. TYPE
Sc |
|
NGC
5033 |
13 |
11.2 |
+36 |
51 |
SPIRAL
GALAXY |
MAG. 10.3TYPE
Sb |
|
NGC 5055
M.63 |
13 |
13.5 |
+42 |
17 |
SPIRAL
GALAXY |
MAG. 9.5. TYPE Sb
|
|
NGC 5194/5
M.51 |
13 |
27.8 |
+47 |
27 |
SPIRAL
GALAXY |
MAG. 8. WHIRLPOOL
GALAXY |
|
NGC 5272
M.3 |
13 |
39.9 |
+28 |
38 |
GLOBULAR
GALAXY |
MAG.
6.4 |
|
NGC
5395 |
13 |
56.5 |
+37 |
39 |
SPIRAL
GALAXY |
MAG. 12.2. TYPE
Sb |
