تنزيل الملف ( صورة 95.28 kB)
تنزيل ملف PDF (PDF file 175.09 kB)
شرح الرسم التوضيحي:
The constellation Aquila with its bright stars and surrounding constellations. Aquila is surrounded by (going clockwise from the top): Sagitta, Hercules, Ophiuchus, Serpens Cauda, Scutum, Sagittarius, Capricornus, Aquarius and Delphinus. Aquila is most notable for its brightest star Altair. This forms one vertex of the prominent Summer Triangle asterism that is visible in northern hemisphere summer evenings.
Aquila spans the celestial equator and thus some part of it is visible from all of the Earth at some point in the year. It is most visible in the evenings in the late northern hemisphere summer and late southern hemisphere winter.
The y-axis of this diagram is in degrees of declination with north as up and the x-axis is in hours of right ascension with east to the left. The sizes of the stars marked here relate to the star's apparent magnitude, a measure of its apparent brightness. The larger dots represent brighter stars. The Greek letters mark the brightest stars in the constellation. These are ranked by brightness with the brightest star being labeled alpha, the second brightest beta, etc., although this ordering is not always followed exactly. The dotted boundary lines mark the IAU's boundaries of the constellations and the solid green lines mark one of the common forms used to represent the figures of the constellations. The blue line in the lower right of the diagram is the ecliptic. Neither the constellation boundaries, nor the line marking the ecliptic, nor the lines joining the stars appear on the sky.
مصدر الرسم التوضيحي: Adapted by the IAU Office of Astronomy for Education from the original by IAU/Sky & Telescope. رابط المصدر
حالة ترجمة الرسم التوضيحي: لم تتم الموافقة من قبل مُراجع بعد
مصطلحات معجم ذات صلة:
الإحداثيات السماوية
, الدلو
, القدرالظاهري
, المجمة
, المطلع المستقيم
, الميل
, خط الاستواء السماوي
, كوكبة الجدي
, مجموعة نجمية او حشد نجمى
, مسار البروج
فئات:
علم الفلك بالعين المجردة
ترخيص الرسم التوضيحي: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات
