RS Ophiuchi

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What Wikipedia says

RS Ophiuchi (RS Oph) is a recurrent nova system approximately 5,000 light-years away in the constellation Ophiuchus. In its quiet phase it has an apparent magnitude of about 12.5. It has been observed to erupt in 1898, 1933, 1958, 1967, 1985, 2006 and 2021 and reached about magnitude 5 on average.

Excerpt from the Wikipedia article “RS Ophiuchi”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ESO, CC BY 4.0, via Wikimedia Commons.