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Andromeda

Andromède

Genitive: Andromedae

Northern 722 sq° And

Étoile la plus brillante : Alpheratz

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Mythologie

Nommée d'après la princesse Andromède de la mythologie grecque, enchaînée à un rocher en sacrifice au monstre marin Cetus. Elle fut sauvée par le héros Persée, qui pétrifia le monstre à l'aide de la tête de Méduse.

Points Forts de l'Observation

Abrite la célèbre galaxie d'Andromède (M31), la grande galaxie la plus proche de la Voie lactée, visible à l'œil nu. Contient également l'amas ouvert NGC 752 et la nébuleuse planétaire NGC 7662 (Boule de neige bleue).

Étoiles Principales

20
Alpheratz

HIP 677; Alpha And; 21 And

2.06 mag 92.8″ B: 11.1 B5.5V
Mirach

HIP 5447; Beta And; 43 And

2.06 mag M0+ IIIa
Almaak

HIP 9640; Gamma1 And; 57 And

2.26 mag 9.6″ B: 5.0 K3-IIb
Delta And

HIP 3092; Delta And; 31 And

3.27 mag K3III
Nembus

HIP 7607; 51 And

3.57 mag K3- III CN0.5
1 And

HIP 113726; 1 And

3.62 mag 0.2″ B: 6.0 B6III
Lambda And

HIP 116584; Lambda And; 16 And

3.82 mag G8IV k
Mu And

HIP 4436; Mu And; 37 And

3.87 mag A6V
Zeta And

HIP 3693; Zeta And; 34 And

4.06 mag K1IIe
Titawin

HIP 7513; Upsilon And; 50 And

4.09 mag F8V
Kappa And

HIP 116805; Kappa And; 19 And

4.14 mag 47.4″ B: 11.3 B9IVn
Phi And

HIP 5434; Phi And; 42 And

4.25 mag 0.5″ B: 5.6 B7Ve
Iota And

HIP 116631; Iota And; 17 And

4.29 mag B8V
Pi And

HIP 2912; Pi And; 29 And

4.36 mag 36.2″ B: 7.1 B5V
Epsilon And

HIP 3031; Epsilon And; 30 And

4.37 mag G6IIIFe-3CH1
Eta And

HIP 4463; Eta And; 38 And

4.42 mag G8IIIb
Sigma And

HIP 1473; Sigma And; 25 And

4.52 mag 7.0″ B: 11.4 A2V
7 And

HIP 114570; 7 And

4.52 mag F0V
Nu And

HIP 3881; Nu And; 35 And

4.53 mag B5V+F8V
Theta And

HIP 1366; Theta And; 24 And

4.61 mag A2V

Étoiles Doubles

15
Almaak

HIP 9640; Gamma1 And; 57 And

2.26 mag 9.6″ B: 5.0 K3-IIb
Pi And

HIP 2912; Pi And; 29 And

4.36 mag 36.2″ B: 7.1 B5V
59 And

HIP 10176; 59 And

5.63 mag 16.6″ B: 6.7 B9V
HIP 4675
6.04 mag 7.9″ B: 6.8 B9.5Vn
HIP 12072
5.71 mag 17.9″ B: 10.3 K3III
HIP 118281
6.58 mag 2.6″ B: 6.7 G0V
56 And

HIP 9021; 56 And

5.67 mag 202.5″ B: 6.1 K0III
26 And

HIP 1501; 26 And

6.11 mag 6.1″ B: 10.1 B8V
LN And

HIP 113802

6.39 mag 7.6″ B: 10.1 B2V
HIP 12057
6.36 mag 14.8″ B: 11.2 B9pHgMn
HIP 2475
5.87 mag 56.3″ B: 9.3 K1III
HIP 1302
6.15 mag 8.6″ B: 9.8 A2VpSi
HIP 6140
6.46 mag 6.4″ B: 9.6 A5m
4 And

HIP 114200; 4 And

5.33 mag 51.1″ B: 11.7 K5III
HIP 115261
6.13 mag 13.6″ B: 10.1 A5Vn

Étoiles Variables

2
R And

HR 90

7.39 mag 5.8 - 15.4 M S6.5IIIeZr6Ti2
W And

HIP 10687

6.70 mag 6.3 - 15.8 M M7-8Se

Objets du Ciel Profond

30
Amas Ouvert (3)
Caldwell 28

NGC 752

5.7 mag 50
NGC 7686
5.6 mag 15.
NGC 956
9.0 mag 8.
Galaxie (26)
Messier 31

NGC 224

3.4 mag 178. Sb
Caldwell 23

NGC 891

9.9 mag 14 Sb
Messier 110

NGC 205

8.5 mag 17.4 E6pec
NGC 7640
10.9 mag 10.7 SBbc
Messier 32

NGC 221

8.1 mag 7.6 E2
NGC 214
12.2 mag 2.1 SABc
NGC 404
10.1 mag 4.4 S0
NGC 169
13.0 mag 3.0 Sab
NGC 523
14.0 mag 3.1 Sbc
NGC 536
13.0 mag 3.7 Sb
NGC 812
13.0 mag 3.2 Sc
NGC 818
13.0 mag 3.2 Sbc
NGC 828
13.0 mag 3.2 Sa
NGC 21
14.0 mag 1.4 Sbc
NGC 72
13.4 mag 1.4 Sab
NGC 260
14.0 mag 1.0 Sc
NGC 662
14.3 mag 1.0 Sb
NGC 721
13.4 mag 2.0 Sbc
NGC 753
12.4 mag 2.9 SABc
NGC 841
13.0 mag 2.0 Sab
NGC 13
14.0 mag 2.7 Sb
NGC 48
15.0 mag 1.7 SABb
NGC 70
15.0 mag 1.7 Sbc
NGC 562
15.0 mag 1.5 Sc
NGC 668
14.0 mag 2.3 Sb
NGC 898
14.0 mag 2.1 Sab
Nébuleuse Planétaire (1)
Blue Snowball

NGC 7662

C22

8.3 mag 0.5