Celestial hemisphere:  Northern  ·  Constellation: Lyra (Lyr)
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Kronberger 61, Peter Goodhew
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Kronberger 61, Peter Goodhew
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Description

Kronberger 6`1 (Kn 61). also known as the Soccer Ball nebula, is a recently-discovered planetary nebula in the constellation of Cygnus. It was discovered in January 2011 by Mattias Kronberger, who is a member of the amateur group Deep Sky Hunters. It is very small (diameter of 104 arcsecs).

It is barely visible on the second Palomar Optical Sky Survey (POSS-II) blue plate scan, suggesting a surface brightness well below magnitude 25 per square arcsecond - and at an estimated distance of 13,000 light years (1).

It is a highly filamentary bubble with a high expansion velocity of 67.6 km/second. A crude kinematic age for the bubble yields 16,000 years (2).

(1) http://www.gemini.edu/node/11656

(2) https://arxiv.org/abs/1406.4408

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    Kronberger 61, Peter Goodhew
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    Kronberger 61, Peter Goodhew
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Kronberger 61, Peter Goodhew