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Les Chiens De Chasse Canes Venatici, Canum Venaticorum, Cvn

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Les Chiens De Chasse Canes Venatici, Canum Venaticorum, Cvn Club Astronomie des Moulins Les Chiens de Chasse Canes Venatici, Canum Venaticorum, CVn Une petite constellation boréale à l'Est de la Grand Ourse. Elle fut introduite par Johannes Hévélius en 1687. Selon ce dernier, elle représentait les chiens du Bouvier « Chara » et « Astérion ». L'étoile la plus brillante de la constellation est Alpha CVn « Cor Caroli ». - 1 - Club Astronomie des Moulins LES ÉTOILES Alpha1 CVn Alpha2 CVn « Cor Corali » Étoile double variable dans Les Chiens de chasse Étoile double dans Les Chiens de chasse de type spectral : A0spe,,, (type ACV) de type spectral : F0V Ascention droite : 12h56'01,85" Ascention droite : 12h56'0,61" Déclinaison : +38°19'05,7" Déclinaison : +38°18'53,0" Magnitude : 2,840 max. 2,980 min. Magnitude : 5,486 Bêta CVn « Chara » Étoile variable dans Les Chiens de chasse de type spectral : G0V Ascention droite : 12h33'44,55" Déclinaison : +41°21'14,3" Magnitude : 4,24 LES OBJETS CÉLESTES NGC 5194 (M51) NGC 4258 (M106) Galaxie « Whirlpool » Galaxie dans les Chiens dans les Chiens de de chasse chasse ——————————— ——————————— A.D. : 12h18'57,8" A.D. : 13h29'53,3" Décl. : +47°18'16" Décl. : +47°11'48" Magn. : 9,29P Magn. : 9,08P Dimensions : 18,62' Dimensions : 11,22' grand axe grand axe NGC 5055 (M63) NGC 4618 Galaxie du « Tournesol » Galaxie dans les Chiens dans les Chiens de de chasse chasse ——————————— ——————————— A.D. : 12h41'31,8" A.D. : 13h15'49,8" Décl. : +41°09'03" Décl. : +42°02'06" Magn. : 11,31P Magn. : 9,57P Dimensions : 4,17' grand Dimensions : 12,58' axe grand axe NGC 4490 NGC 5371 Galaxie dans les Chiens Galaxie dans les Chiens de chasse de chasse ——————————— ——————————— A.D. : 12h30'36,7" A.D. : 13h55'40,6" Décl. : +41°38'23" Décl. : +40°27'44" Magn. : 10,34P Magn. : 11,34P Dimensions : 6,32' grand Dimensions : 4,37' grand axe axe - 2 - Club Astronomie des Moulins NGC 5353 NGC 4736 (M94) Groupe de galaxies dans Galaxie dans les Chiens les Chiens de chasse de chasse ——————————— ——————————— A.D. : 13h53'24,0" A.D. : 12h50'53,6" Décl. : +40°18'00" Décl. : +41°07'07,10" Nombre membres : 5 Magn. : 8,68P Magn. : 12,00 la plus Dimensions : 11,22' brillante grand axe Diamètre du groupe : 0,20° NGC 4151 NGC 4244 Galaxie dans les Chiens Galaxie dans les Chiens de chasse de chasse ——————————— ——————————— A.D. : 12h10'33,0" A.D. : 12h17'30,0" Décl. : +39°24'28" Décl. : +37°48'27" Magn. : 10,90P Magn. : 10,50P Dimensions : 6,32' grand Dimensions : 16,60' axe grand axe NGC 5033 NGC 5005 Galaxie dans les Chiens Galaxie dans les Chiens de chasse de chasse ——————————— ——————————— A.D. : 13h13'28,0" A.D. : 13h10'56,2" Décl. : +36°36'38" Décl. : +37°03'29" Magn. : 10,57P Magn. : 10,87P Dimensions : 10,72' Dimensions : 5,75' grand grand axe axe NGC 4214 NGC 4395 Galaxie dans les Chiens Galaxie dans les Chiens de chasse de chasse ——————————— ——————————— A.D. : 12h17'30,0" A.D. : 12h25'49,9" Décl. : +37°48'27" Décl. : +33°32'46" Magn. : 10,50P Magn. : 10,93P Dimensions : 16,60' Dimensions : 13,18' grand axe grand axe NGC 4656 NGC 4631 Galaxie dans les Chiens Galaxie dans les Chiens de chasse de chasse ——————————— ——————————— A.D. : 12h43'58,0" A.D. : 12h42'07,7" Décl. : +32°10'18" Décl. : +32°32'28" Magn. : 10,55P Magn. : 9.63P Dimensions : 15,13' Dimensions : 15,48' grand axe grand axe - 3 - Club Astronomie des Moulins NGC 5272 (M3) NGC 4449 Amas globulaire dans les Galaxie dans les Chiens Chiens de chasse de chasse ——————————— ——————————— A.D. : 13h42'11,2" A.D. : 12h28'11,4" Décl. : +28°22'32" Décl. : +44°05'40" Magn. : -8,85 Magn. : 10,18P Diamètre : 17,8' Dimensions : 6,17' grand axe 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 - 4 -.
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