Definition
A classification system for stars based on their surface temperature and spectral characteristics, using letters O, B, A, F, G, K, M from hottest to coolest. Each class shows distinctive absorption lines in the star's spectrum that reveal its chemical composition and physical conditions.
Etymology
Originated from 'spectrum' (Latin 'specere', to look) and 'class' (Latin 'classis', division). Developed at Harvard Observatory in the 1890s by Annie Jump Cannon, who reorganized earlier alphabetical systems into the temperature sequence we use today, creating the mnemonic 'Oh Be A Fine Girl/Guy Kiss Me.'
Kelly Says
The original spectral classification used the entire alphabet, but most letters were dropped when astronomers realized they were seeing temperature differences, not different star types! Annie Jump Cannon personally classified over 350,000 stars, more than any other person in history.
Translations
AMአማርኛ
光谱 ክፍለ ክፍል
gʷʷɔt ˈkəfəle ˈkəfəl
ARالعربية
تصنيف الطيف
tasnifi al-ta'if
BNবাংলা
প্রাকৃতিক শ্রেণী
prakṛtik śreṇī
CACatalà
classe espectral
klasɛ espɛktral
CSČeština
spektroskopická třída
spektroskopicka triada
DADansk
spektalklasse
spektalklasse
DEDeutsch
spektrale Klasse
zpektralɛ klaːsə
ELΕλληνικά
συνοπτική κατηγορία
sunotikī kategoría
ESEspañol
clase espectral
klasɛ ˈɛspɛktral
FAفارسی
طبقه طیف
tabghe taif
FISuomi
spektriklassi
spektriklassi
FRFrançais
classe spectrale
klas spektral
GUGU
સ્પેક્ટ્રલ ક્લેસ
spɛktṛal klɛs
HAHA
kungi spectra
kungi spectra
HEעברית
כיתה ספקטרלית
k'ita spektralit
HIहिन्दी
प्रकाश स्पेक्ट्रम वर्ग
prakash spektrum varg
HUMagyar
spektrum osztály
spektrum osztály
IDBahasa Indonesia
kelas spektrum
kelas spektrum
IGIG
akụkụ spektrum
akụkụ spektrum
ITItaliano
classe spettrale
klasɛ spektralɛ
JA日本語
分光スペクトルクラス
ぶんこうスペクトルクラス
KKKK
спектр классы
spektır klassy
KMKM
ថ្នាក់ស្បែកស្បង់
thnaːk sbaːek sbɔŋ
KO한국어
광 phổ 클래스
gwang po seulleo-sseu
MSBahasa Melayu
kelas spektrum
kelas spektrum
MYမြန်မာ
စပက်တ럼 ကုလား
sɛpɛktəm kula
NLNederlands
spectrale klasse
spectrale klasse
NONorsk
spektral klasse
spektral klasse
PAPA
ਸਪੈਕਟ੍ਰલ ਕਲਾਸ
spaektral kalaas
PLPolski
klasa widmowa
klasa widmowa
PTPortuguês
classe espectral
klasɛ ˈɛspɛktral
RORomână
clasă spectrală
klasa spectrală
RUРусский
спектральный класс
spɛktral'nyj klass
SVSvenska
spektralklass
spektral klass
SWKiswahili
darasa ya spektra
darasa ya spektra
TAதமிழ்
ஒளிப்பட வகை
olippadha vagai
TEతెలుగు
స్పెక్ట్రల్ క్లాస్
spektralu klassu
THไทย
ชั้นประเภทสเปกตรัม
chen praepth spektrum
TLTL
uri ng spektrum
uri ng spektrum
TRTürkçe
spektral sınıf
spektral sınıf
UKУкраїнська
спектральний клас
spektral'nyj klas
URاردو
سِپیکٹral کُلَس
sipektral kulās
VITiếng Việt
lớp phân loại quang phổ
lop phan loai quang pho
YOYO
akoko spektrum
akoko spektrum
ZUZU
inkludi yokuthi
inkludi yokuthi