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Club Astronomie Des Moulins Club Astronomie des Moulins Le Lézard Lacerta, Lacertae, Lac Le Lézard est une petite constellation placée sur les cartes par Jean Hévélius au XVIIe siècle, dans une région entre et Andromède, Cassiopée et le Cygne. Histoire La Lézard fut créée par Johannes Hevelius en 1687 dans une région du ciel pauvre en étoiles brillantes. Son nom provient probablement de la forme en zig-zag décrite par ses étoiles les plus lumineuses. Avant Hevelius, l'astronome Augustin Royer créa, au même endroit, la constellation du Sceptre (la Main de Justice) pour rendre hommage au Roi de France Louis XIV. Cette appellation courtisane ne prit pas racine. Une légende grecque liée à Déméter, où cette dernière recherche sa fille Perséphone. Le roi Céléos lui offre alors l'hospitalité. Mais alors qu'elle est en train de manger, le fils du roi lui fait une remarque insultante, et Démeter le change en lézard. - 1 - Club Astronomie des Moulins LES ÉTOILES Bêta Lac Alpha Lac Étoile dans le Lézard de type spectral : G9III Étoile dans le Lézard de type spectral : A1V Ascention droite : 22h23'33,63" Ascention droite : 22h31'17,51" Déclinaison : +52°13'44,6" Déclinaison : +50°16'57,0" Magnitude : 4,420 Magnitude : 3,760 Distance : 169,88 al Distance : 102,37 al 5 Lac 11 Lac Étoile dans le Lézard de type spectral : M0II Étoile dans le Lézard de type spectral : K3III Ascention droite : 22h29'31,83" Ascention droite : 22h40'30,87" Déclinaison : +47"42'24,8" Déclinaison : +44°16'34,8" Magnitude : 4,340 Magnitude : 4,500 Distance ; 1164,9 al Distance : 301,72 al 6 Lac HD 211073 Lac Étoile dans le Lézard de type spectral : B2IV Étoile double dans le Lézard de type spectral : K3III Ascention droite : 22h30'29,27" Ascention droite : 22h13'52,71" - 22h13'523,72" Déclinaison : +43°07'24,2" Déclinaison : +39°42'53,7" - +39°42'54,1" Magnitude : 4,520 Magnitude : 4,693 - 8,149 Distance : 1370,4 al Distance : 563,32 al 1 Lac Étoile dans le Lézard de type spectral : K3III Ascention droite : 22h15'58,18" Déclinaison : +37°44'55,5" Magnitude : 4,140 Distance : 627,24 al LES OBJETS CÉLESTES NGC 7209 NGC 7243 Amas ouvert dans le Lézard Amas ouvert dans le Lézard ——————————— ——————————— A.D. : 22h05'12,0" A.D. : 22h15'18,0" Décl. : +46°30'00" Décl. : +49°53'00" Diamètre : 24,0' Diamètre : 21,0' Étoiles : 25 Étoiles : 40 Magn. : 7,8 intégrée Magn. : 6,7 intégrée Âge : 295 millions années Âge : 107 millions années NGC 7296 IC 1434 Amas ouvert dans le Amas ouvert dans le Lézard Lézard ——————————— ——————————— A.D. : 22h28'12,0" A.D. : 22h10'30,0" Décl. : +52°18'00" Décl. : +52°50'00" Diamètre : 4,0' Diamètre : 7,0' Étoiles : 20 Étoiles : 40 Magn. : 9,7 intégrée Magn. : 9,0 intégrée - 2 - Club Astronomie des Moulins IC 5217 Nébuleuse planétaire dans le Lézard ——————————— A.D. : 22h23'54,0" Décl. : +50°57'51" Diamètre : 6,6' Magn. : 10,00P intégrée Source : Imago Mundi – Wikipedia Constellation – Catalogue NGC interactif en ligne — Coelix Photos : Catalogue digital Sky survey – Nasa Cartes : logiciel Coelix avec adaptation sur Corel Draw Mise en ligne : GA - 3 -.
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