GEMINI
(Abbreviation: Gem
A brilliant Zodiacal constellation. In mythology, Castor and Pollux were the twin sons of the King and Queen of Sparta. Pollux was immoral, but Castor was not. When Castor was killed, Pollux pleaded with the gods to be allowed to share his immortality; so Castor was brought back to life, and both youths placed in the sky. Today Pollux is brighter of the two stars, but in ancient times Castor was recorded as being the brilliant. If any change has occurred (and this is no means certain) it is more likely to have been in the late-type Pollux than in Castor, which is a multiple system. There are 13 stars above the forth magnitude:
BRIGHTEST STARS
|
STAR |
R.A. |
DEC |
MAG. |
ABS.MAG. |
SPEC |
DIST.PC | ||||
|
H |
M |
S |
o |
|
| |||||
|
1
|
06 |
04 |
07.2 |
+23 |
15 |
48 |
4.16 |
0.3 |
gG5 |
59 |
|
7 h |
06 |
14 |
52.6 |
+22 |
30 |
24 |
var |
-0.5v |
M3 |
57 PROPUS |
|
13 m |
06 |
22 |
57.6 |
+22 |
30 |
49 |
2.88v |
-0.5 |
M3 |
71 TEJAT LY/
160 |
|
18 n |
06 |
28 |
57.7 |
+20 |
12 |
43 |
4.15 |
-1.0 |
B7 |
110 |
|
24 g |
06 |
37 |
42.7 |
+16 |
23 |
57 |
1.93 |
0.0 |
AO |
26 ALHENA LY/
105 |
|
27 Ξ |
06 |
43 |
55.9 |
+25 |
07 |
52 |
2.98 |
-4.5 |
G8 |
210 MEBSUTA LY/
1000 |
|
30 |
06 |
43 |
59.2 |
+13 |
13 |
40 |
4.49 |
0.0 |
K1 |
70 |
|
31 x |
06 |
45 |
17.3 |
+12 |
53 |
44 |
3.36 |
0.7 |
F5 |
23 ALZIRR |
|
34 q |
06 |
52 |
47.3 |
+33 |
57 |
40 |
3.60 |
0.0 |
A3 |
51 |
|
38 e |
06 |
54 |
38.6 |
+13 |
10 |
40 |
4.65 |
2.6 |
FO |
26 |
|
43 z |
07 |
04 |
06.5 |
+20 |
34 |
13 |
var |
-4.5 |
GO |
430
MEKBUDA |
|
46 t |
07 |
11 |
08.3 |
+30 |
14 |
43 |
4.41 |
-0.1 |
K2 |
67 |
|
54 l |
07 |
18 |
05.5 |
+16 |
32 |
25 |
3.58 |
1.7 |
A3 |
25 |
|
55 d |
07 |
20 |
07.3 |
+21 |
58 |
56 |
3.53 |
1.9 |
F2 |
18 WASAT |
|
60 i |
07 |
25 |
43.5 |
+27 |
47 |
53 |
3.79 |
0.2 |
KO |
50 |
|
62 r |
07 |
29 |
06.6 |
+31 |
47 |
03 |
4.18 |
2.6 |
FO |
19 |
|
66 a |
07 |
34 |
35.9 |
+31 |
53 |
18 |
1.58 |
1.2 |
AO |
14 CASTOR LY/ 45 |
|
69 n |
07 |
35 |
55.3 |
+26 |
53 |
45 |
4.06 |
-0.4 |
MO |
78 |
|
75 s |
07 |
43 |
18.7 |
+28 |
53 |
01 |
4.28 |
0.0 |
K1 |
40 |
|
77 k |
07 |
44 |
26.8 |
+24 |
23 |
52 |
3.57 |
0.3 |
G8 |
45 |
|
78 b |
07 |
45 |
18.9 |
+28 |
01 |
34 |
1.14 |
0.2 |
KO |
11 POLLUX LY/
35 |
DOUBLES
|
STAR |
R.A. |
DEC |
MAGS. |
P.A. |
DIST. | ||||
|
H |
M |
S |
o |
|
| ||||
|
7 h |
06 |
14 |
52.6 |
+22 |
30 |
24 |
var,8.8 |
278 |
1.3 SLOW
BINARY |
|
13 m |
06 |
22 |
57.6 |
+22 |
30 |
49 |
2.9,9.8 |
141 |
122.5 OPTICAL. B IS A CLOSE
BINARY |
|
43 z |
07 |
04 |
06.5 |
+20 |
34 |
13 |
var,10.5 |
084 |
87.0
OPTICAL |
|
54 l |
07 |
18 |
05.5 |
+16 |
32 |
35 |
3.6,10.0 |
033 |
10.0 FIXED |
|
55 d |
07 |
20 |
07.3 |
+21 |
58 |
56 |
3.5,8.1 |
211 |
6.8 SLOW
BINARY |
|
77 k |
07 |
44 |
26.8 |
+24 |
23 |
52 |
3.6,9.5 |
236 |
6.8 SLOW
BINARY |
|
66 a |
07 |
34 |
35.9 |
+31 |
53 |
18 |
1.97,2.95 |
140 |
1.8 BINARY, 350
YEARS.EACH COMPONENT |
|
IS A SPECTROSCOPIC
BINARY. CASTOR C OR YY GEM (ECLIPSING BINARY, MAG.± 9) LIES AT 73, PA
164 | |||||||||
VARIABLES
|
SRAR |
R.A. |
DEC |
RANGE |
PERIOD.D. |
SPEC |
TYPE | ||
|
H |
M |
o |
| |||||
|
7 h |
06 |
14.9 |
+22 |
30 |
3.1---3.9 |
233 |
M3 |
SEMI-REGULAR |
|
W |
06 |
32.7 |
+15 |
22 |
6.9---7.9 |
7.9 |
G |
CEPHEID |
|
X |
06 |
43.9 |
+30 |
20 |
7.6---13.6 |
264 |
M |
MIRA |
|
43 z |
07 |
04.1 |
+20 |
34 |
3.7---4.3 |
10.15 |
G |
CEPHEID |
|
R |
07 |
04.3 |
+22 |
47 |
6.0---14.0 |
370 |
S |
MIRA |
|
V |
07 |
20.3 |
+13 |
12 |
7.8---14.4 |
275 |
M |
MIRA |
|
T |
07 |
46.3 |
+23 |
52 |
8.0---15.0 |
288 |
S |
MIRA |
|
U |
07 |
52.1 |
+22 |
08 |
8.8---14.4 |
- |
Gp |
PROTOTYPE SSCYG OR U GEM STAR. OUTBURST
± 103 DAYS |
CLUSTERS AND NEBULΖ
|
OBJECT |
R.A. |
DEC |
TYPE |
NOTES | ||
|
H |
M |
o |
| |||
|
NGC 2129 |
06 |
58.1 |
+23 |
18 |
OPEN CLUSTER |
MAG.7.2. |
|
NGC 2168 M.35 |
06 |
05.8 |
+24 |
21 |
OPEN CLUSTER |
MAG.5.3.NAKED-EYE |
|
NGC 2392 |
07 |
26.2 |
+21 |
01 |
PLANETARY |
MAG.8.3.CENTER STAR
MAG.10.5 |
