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Kepler’s Supernova Remnant

V843 Ophiuchi, SN 1604, 3C 358, HR 6515

Supernova remnant in Ophiuchus

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Proper Name	Kepler's Supernova, Kepler's Supernova Remnant
Bayer Designation	None
HR (BSC)	6515
Variable Designation	V843 Ophiuchi
Other Designations	SN 1604, 3C 358
Constellation	Ophiuchus
Right Ascension	17h 30m 41s
Declination	-21° 29' 14"
Distance	c.19,900 light years c.6,100 parsecs (highly approximate)
Magnitude	Apparent: +19 Absolute: +5.1 Apparent magnitude during 1604 supernova: -2.5
Diameter	Apparent: 4' Actual: c. 23 light years
Optimum Visibility	June / July

The supernova that erupted in southern Ophiuchus in October 1604 briefly outshone every other star in the sky before fading from sight. Its remnant can barely be seen in visible wavelengths, but can still be detected in infrared light (as seen in this image) and shines strongly in radio and X-ray wavelengths. Imagery provided by Aladin sky atlas

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