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Constellations / Sagittarius

Sagittarius

Sagittarii

Equatorial 867 sq° Sgr

Étoile la plus brillante : Kaus Australis

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Mythologie

L'Archer, un centaure bandant un arc. Souvent identifié à Chiron (bien que Chiron soit aussi associé au Centaure). Le centre de notre galaxie, la Voie lactée, se trouve dans cette direction.

Points Forts de l'Observation

Extraordinairement riche en objets du ciel profond. Contient M8 (nébuleuse de la Lagune), M17 (nébuleuse Oméga), M20 (nébuleuse Trifide), M22 (globulaire), M24 (nuage stellaire du Sagittaire) et bien d'autres objets Messier. Le centre galactique se trouve ici.

Étoiles Principales

20
Epsilon Sgr

KAUS AUSTRALIS

HIP 90185; Epsilon Sgr; 20 Sgr

1.85 mag 39.9″ B: 14.3 A0III
Nunki

Nunki

HIP 92855; Sigma Sgr; 34 Sgr

2.02 mag 349.0″ B: 9.9 B2.5V
Ascella

Ascella

HIP 93506; Zeta Sgr; 38 Sgr

2.60 mag 0.2″ B: 3.5 A2.5Va
Kaus Meridionalis

Kaus Meridionalis

HIP 89931; Delta Sgr; 19 Sgr

2.70 mag 31.7″ B: 14.5 K2.5IIIa CN0.5
Kaus Borealis

Kaus Borealis

HIP 90496; Lambda Sgr; 22 Sgr

2.81 mag 82.5″ B: 9.9 K0IV
Albaldah

Albaldah

HIP 94141; Pi Sgr; 41 Sgr

2.89 mag 0.1″ B: 3.6 F2II-III
Alnasl

Alnasl

HIP 88635; Gamma2 Sgr; 10 Sgr

2.99 mag K1III
Eta Sgr

HIP 89642; Eta Sgr

3.11 mag 3.5″ B: 8.0 M2 III
Phi Sgr

HIP 92041; Phi Sgr; 27 Sgr

3.17 mag 0.2″ B7IV
Tau Sgr

HIP 93864; Tau Sgr; 40 Sgr

3.32 mag K1III
Xi Sgr

Xi Sgr

HIP 93085; Xi Sgr; 37 Sgr

3.51 mag G8/K0 II/III
39 Sgr

HIP 93683; 39 Sgr

3.77 mag 38.4″ B: 13.8 G9IIIb
Polis

Polis

HIP 89341; Mu Sgr; 13 Sgr

3.86 mag 16.9″ B: 10.5 B8Iab(e)
Rho Sgr

Rho Sgr

HIP 95168; Rho1 Sgr; 44 Sgr

3.93 mag A9IV
Rukbat

Rukbat

HIP 95347; Alpha Sgr

3.97 mag B8V
Arkab Prior

Arkab Prior

HIP 95241; Beta1 Sgr

4.01 mag 28.3″ B: 7.2 B9V
Iota Sgr

HIP 98032; Iota Sgr

4.13 mag K0II-III
Arkab Posterior

Arkab Posterior

HIP 95294; Beta2 Sgr

4.29 mag F2III
Theta Sgr

Theta Sgr

HIP 98412; Theta1 Sgr

4.37 mag 0.2″ B3IV
59 Sgr

HIP 98162; 59 Sgr

4.52 mag K2.5IIb

Étoiles Doubles

15
HIP 88060
7.04 mag 5.9″ B: 7.0 G8II
HIP 88060
5.16 mag 5.9″ B: 7.0 M1Ib
HIP 92882
5.79 mag 17.7″ B: 9.1 F4V
HIP 93537
6.05 mag 7.7″ B: 9.0 G6III
Eta Sgr

HIP 89642; Eta Sgr

3.11 mag 3.5″ B: 8.0 M2 III
HIP 97423
6.11 mag 4.6″ B: 6.4 A6m
Kaus Meridionalis

Kaus Meridionalis

HIP 89931; Delta Sgr; 19 Sgr

2.70 mag 31.7″ B: 14.5 K2.5IIIa CN0.5
Arkab Prior

Arkab Prior

HIP 95241; Beta1 Sgr

4.01 mag 28.3″ B: 7.2 B9V
4 Sgr

HIP 88116; 4 Sgr

4.76 mag 3.7″ B: 8.4 B9V
U Sgr

HIP 90836

6.68 mag 66.2″ B: 9.1 G1.5Ib
HIP 88396
6.74 mag 11.4″ B: 9.2 B0.5III
V3792 Sgr

HIP 88905

6.61 mag B3III
HIP 90485
5.92 mag 11.1″ B: 9.3 F9V
HIP 94645
6.25 mag 14.3″ B: 10.1 F9V
HIP 88038
5.74 mag 54.2″ B: 7.8 G8III

Étoiles Variables

9
V505 Sgr

HIP 97849

6.48 mag A0V+F8IV
RS Sgr

HIP 89637

6.16 mag B3V+A
3 Sgr

HIP 87072; 3 Sgr

4.54 mag F7II
Gamma Sgr

Gamma Sgr

HIP 88567; Gamma1 Sgr

4.69 mag F4-G1Ib
V3792 Sgr

HIP 88905

6.61 mag B3III
Y Sgr

HIP 89968

5.75 mag F8I
V3879 Sgr

HIP 91781

6.35 mag M4III
V4089 Sgr

HIP 96234

5.89 mag A3III
V3894 Sgr

HIP 87163

6.35 mag B4IVe

Objets du Ciel Profond

30
Amas Ouvert (12)
M23

NGC 6494

5.5 mag 27.
NGC 6530
4.6 mag 15.
M21

NGC 6531

6.5 mag 13.
M18

NGC 6613

7.5 mag 9.
M25

IC 4725

4.6 mag
NGC 6595
7.0 mag 11.
NGC 6716
6.9 mag 7.
NGC 6469
8.0 mag 12.
NGC 6546
8.0 mag 13.
NGC 6520
8.0 mag 6.
NGC 6568
9.0 mag 13.
NGC 6645
9.0 mag 10.
Amas Globulaire (13)
M22

NGC 6656

5.1 mag 24.0
M55

NGC 6809

6.3 mag 19.0
M28

NGC 6626

6.8 mag 11.2
M54

NGC 6715

7.6 mag 9.1
NGC 6723
7.3 mag 11.0
M69

NGC 6637

7.6 mag 7.1
M70

NGC 6681

7.9 mag 7.8
NGC 6544
8.3 mag 8.9
NGC 6553
8.3 mag 8.1
M75

NGC 6864

8.5 mag 6.0
NGC 6522
8.6 mag 5.6
NGC 6624
8.3 mag 5.9
NGC 6569
8.7 mag 5.8
Galaxie (2)
Barnard's Galaxy

NGC 6822

C57

8.7 mag 16 IB
IC 4895
8.0 mag 10.0
Nébuleuse en Émission (3)
M8

NGC 6523

4.6 mag 90.
M17

NGC 6618

6.0 mag
M20

NGC 6514

6.3 mag