天鹅座Q

天鹅座Q（Q Cyg），是位于天鹅座的一颗恒星。它也被称为“1876年天鹅座新星”、“NGC 7114”和“HR 8296”。天鹅座新星位于天鹅座西北部，与蝎虎座接壤。

天鹅座Q是有记录以来最早的新星之一，它是天文学家约翰·弗里德里希·尤利乌斯·施密特于1876年11月24日发现的。这颗恒星经历了一次新星爆发，星等变亮至约3等，并在四天内保持同样的亮度。

该系统被称为激变变星，由一颗白矮星和另一颗每10小时绕主星一周的恒星组成。白矮星被一个吸积盘包围，它比它所环绕的恒星亮得多。估计该系统的距离太阳为740±11秒差距。估计，这颗伴星的质量约为太阳的0.6倍，是一颗光谱类型为K5的橙矮星。伴星也被称为供体恒星，通过其吸积盘为白矮星提供质量.。

报导在这颗新星周围有一个小的星云盘，这导致它被列入NGC天体表，可能是一个行星状星云。在现代观测中没有可见的星云，修订的新总目录将其列为不存在天体。

Q Cygni (Q Cyg), is a star located in the constellation Cygnus. It is also known as Nova Cygni 1876, and has the designation NGC 7114, and HR 8296. Nova Cygni is located in the northwestern portion of Cygnus along the border with Lacerta.

One of the earliest novae recorded, Q Cygni was discovered by astronomer Johann Friedrich Julius Schmidt on November 24, 1876. The star had undergone a nova, brightening to about 3rd magnitude and remaining as bright for four days.

The system is termed a cataclysmic variable, composed of a white dwarf in close orbit with another star that orbit each other every 10 hours. The white dwarf is surrounded by an accretion disc, which blazes much brighter than the star it circles. The system has been estimated to be 740 ± 11 parsecs distant. The secondary star has been estimated to be around 0.6 times as massive as the Sun, making it an orange dwarf of spectral type K5. Also known as a donor star, the secondary supplies mass to the white dwarf via its accretion disc.

A small nebulous disc was reported around the nova and this led to it being listed in the New General Catalogue as a possible planetary nebula. No nebulosity is visible in modern observations and the Revised New General Catalogue lists this as a "non-existent" object.