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Serpens

Serpentis

Equatorial 637 sq° Ser

Étoile la plus brillante : Unukalhai

Mythologie

Le Serpent tenu par le Serpentaire, la seule constellation divisée en deux parties : Serpens Caput (la tête) et Serpens Cauda (la queue). Représente le serpent d'Asclépios.

Points Forts de l'Observation

Contient M5, l'un des plus beaux amas globulaires, et M16 (nébuleuse de l'Aigle) avec les célèbres Piliers de la Création. Abrite également Arp 220, la galaxie ultra-lumineuse infrarouge la plus proche.

Étoiles Principales

20

Unukalhai

HIP 77070; Alpha Ser; 24 Ser

2.65 mag 57.9″ B: 11.8 K2III

HIP 89962; Eta Ser; 58 Ser

3.26 mag 251.4″ B: 10.9 K0III-IV

HIP 77516; Mu Ser; 32 Ser

3.53 mag 0.5″ B: 5.4 B9.5III

HIP 86263; Xi Ser; 55 Ser

3.54 mag 24.5″ B: 13.0 A9IIIp(Sr)

HIP 77233; Beta Ser; 28 Ser

3.67 mag 30.3″ B: 10.0 A1V

HIP 77622; Epsilon Ser; 37 Ser

3.71 mag A2 M

Delta Ser

HIP 76276; Delta Ser; 13 Ser

3.80 mag 3.9″ B: 5.2 F0IV

HIP 78072; Gamma Ser; 41 Ser

3.85 mag 313.4″ B: 11.5 F6V

Gudja

HIP 77450; Kappa Ser; 35 Ser

4.09 mag M0.5IIIab

HIP 86565; 56 Ser

4.26 mag A2V

HIP 84880; Nu Ser; 53 Ser

4.33 mag 45.6″ B: 9.4 A2V

HIP 77257; Lambda Ser; 27 Ser

4.43 mag G0-V

HIP 76852; Iota Ser; 21 Ser

4.52 mag 0.2″ B: 5.2 A1V

HIP 88175; Zeta Ser; 57 Ser

4.62 mag F2IV

Alya

HIP 92946; Theta1 Ser; 63 Ser

4.62 mag 22.4″ B: 4.9 A5V

HIP 77661; Rho Ser; 38 Ser

4.76 mag K5-III

HIP 80179; Sigma Ser; 50 Ser

4.82 mag 43.0″ B: 7.8 F0V

HIP 78554; Pi Ser; 44 Ser

4.83 mag A3V

HIP 74975; 5 Ser

5.06 mag 11.4″ B: 10.1 F8III-IV

HIP 77660; 36 Ser

5.11 mag 0.4″ B: 7.8 A3Vnp

Étoiles Doubles

15

Alya

HIP 92946; Theta1 Ser; 63 Ser

4.62 mag 22.4″ B: 4.9 A5V

Delta Ser

HIP 76276; Delta Ser; 13 Ser

3.80 mag 3.9″ B: 5.2 F0IV

HIP 80179; Sigma Ser; 50 Ser

4.82 mag 43.0″ B: 7.8 F0V
5.83 mag 2.7″ B: 6.7 A1V+A1V

HIP 90441; 59 Ser

5.21 mag 3.9″ B: 7.6 G0III+A6V
6.68 mag 23.2″ B: 7.4 G5V

HIP 77233; Beta Ser; 28 Ser

3.67 mag 30.3″ B: 10.0 A1V
6.25 mag 15.0″ B: 10.1 G7.5IIIaFe-0.5
5.55 mag 54.9″ B: 9.9 B8Vn
5.89 mag 20.6″ B: 9.2 A1V

HIP 75119; 6 Ser

5.35 mag 3.4″ B: 8.8 K3III

Unukalhai

HIP 77070; Alpha Ser; 24 Ser

2.65 mag 57.9″ B: 11.8 K2III

HIP 77052; Psi Ser; 23 Ser

5.88 mag 4.5″ B: 12.0 G2.5V

HIP 86263; Xi Ser; 55 Ser

3.54 mag 24.5″ B: 13.0 A9IIIp(Sr)

Tau Ser

HIP 76878; Tau7 Ser; 22 Ser

5.81 mag 2.4″ B: 10.4 A2m

Étoiles Variables

1

HR 5894

5.20 mag 5.16 - 13.4 M M7IIIe

Objets du Ciel Profond

30
Amas Ouvert (2)
5.0 mag 52.
Amas Globulaire (3)

NGC 5904

5.6 mag 17.4
9.6 mag 6.9
10.6 mag 3.6
Galaxie (24)
11.4 mag 3.0 SBc
10.8 mag 4.9 Sbc
11.7 mag 3.6 Sc
11.4 mag 2.8 Sc
12.0 mag 4.7 Sc
12.4 mag 1.5 SBb
13.0 mag 3.5 SBc
13.0 mag 3.0 Sb
13.0 mag 4.2 SBcd
13.0 mag 3.0 Sc
15.0 mag 0.2 SBb
14.0 mag 1.3 SABc
13.0 mag 2.1 Sbc
13.0 mag 2.3 SBab
14.0 mag 1.9 SABc
— mag 1.3 SABb
15.0 mag 0.8 SBbc
15.0 mag 0.3 Sb
14.0 mag 1.7 Scd
14.0 mag 1.1 Sc
13.0 mag 2.9 SABc
15.0 mag 1.1 Sa
14.0 mag 2.0 Sm
15.0 mag 1.3 SBc
Nébuleuse en Émission (1)

NGC 6611

6.4 mag