NGC 6702 and NGC 6703 (Gary Imm)

Celestial hemisphere: Northern · Constellation: Lyra (Lyr) · Contains: NGC 6702 · NGC 6703 · PGC 2267019

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NGC 6702 and NGC 6703

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NGC 6702 and NGC 6703

This pair of galaxies is located in the constellation of Lyra at a declination of +46 degrees. This image is a great visual comparison between the structure of an elliptical galaxy (NGC 6702, at upper right) and a lenticular galaxy (NGC 6703, at lower left). The elliptical galaxy looks smaller but it is actually the larger galaxy, located further away.

NGC 6702 is a magnitude 13.0 oblong (E3) elliptical galaxy located 170 million light years away. It spans 1.7 arc-minutes in our apparent view. This corresponds to a diameter of 80,000 light years. Note how the brightness profiles drops off in a constant manner in the outer half of its galactic halo.

NGC 6703 is a magnitude 11.3 face-on lenticular galaxy which is closer at 90 million light years away. It spans 2 arc-minutes in our apparent view. This corresponds to a diameter of 60,000 light years. Compared to the elliptical, the brightness profile in the outer half of the disk is fairly constant until the edge. Lenticulars have more of a defined outside edge than ellipticals. Also, as seen here, the boundary between the inner and outer disk regions is more abrupt.

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Status	Advanced success
Started	...
Astrometry.net job	7484118
PixInsight job	BXWA7ZV6AWM61JJRN24VXV2DOIWWMVED
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h47m16s.163
RA (top/left)	18h48m23s.595
RA (top/right)	18h46m11s.210
RA (bottom/right)	18h46m09s.520
RA (bottom/left)	18h48m21s.140

Dec (center)	+45°36′42″.29
Dec (top/left)	+45°44′14″.91
Dec (top/right)	+45°44′49″.81
Dec (bottom/right)	+45°29′07″.84
Dec (bottom/left)	+45°28′32″.58

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NGC 6702 and NGC 6703

NGC 6702 and NGC 6703

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NGC 6702 and NGC 6703

NGC 6702 and NGC 6703

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