SH2-254_255_256_257_258 Plus 52 Europa (Eric Coles (coles44))

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: 10.48 · 52 Europa · IC 2162 · NGC 2195 · Sh2-254 · Sh2-255 · Sh2-256 · Sh2-257 · Sh2-258

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SH2-254_255_256_257_258 Plus 52 Europa

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SH2-254_255_256_257_258 Plus 52 Europa

This image started out as just a group of Sharpless objects. Then I noticed a bright object entering through the upper left edge of the FOV. With some research and a bit of help from Marco Micheli, Ph.D., an astronomer at the ESA NEO Coordination Centre, the object was identified as 52 Europa, the sixth largest asteroid in the asteroid belt. This was a bit of a surprise since asteroids moving through our images are usually just a couple of pixels wide. But 52 Europa was big and bright.

I decided to track the path of 52 Europa as it moved, from left to right, through the FOV and followed it over a five day period from Jan. 16-21, 2021. While not every night was perfect, most were good and I was able to represent the asteroid’s movement in the attached image. What you see represented here, along with the Sharpless objects, is the plot of 52 Europa using approximately every other ten-minute exposure. There is even the hint of change in illumination/rotation in the asteroid over time, but that’s not clear. In any case it was an unexpected result from what was probably going to be a somewhat ordinary image. And just the kind of surprise we hope to see in our images

Narrowband imaging
Sharpless2 Objects

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Status	Advanced success
Started	...
Astrometry.net job	4187915
PixInsight job	BNE28JXPXWCO59NYNBXAQ3BRAVDPLAWS
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h12m23s.84
RA (top/left)	06h15m18s.62
RA (top/right)	06h09m29s.34
RA (bottom/right)	06h09m30s.12
RA (bottom/left)	06h15m17s.30

Dec (center)	+18°02′37″.3
Dec (top/left)	+18°35′35″.5
Dec (top/right)	+18°35′41″.5
Dec (bottom/right)	+17°29′29″.2
Dec (bottom/left)	+17°29′22″.5

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SH2-254_255_256_257_258 Plus 52 Europa

SH2-254_255_256_257_258 Plus 52 Europa

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SH2-254_255_256_257_258 Plus 52 Europa

SH2-254_255_256_257_258 Plus 52 Europa

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