Deep Sky Object in Summer
UGC10214 (Tadpole Galaxy in Draco)
|Date & Time: ||Mar 26 2004, from 24:31 to 25:00 JST(+0900)
|Composed 4 shots with 8 minutes exposed|
|Optical: ||Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
|Auto-guided with Meade LX200 Equatorial & Pictor 201XT
|Digital Camera: ||Fujifilm FinePix S2 Pro
|Location: ||Ooizumi vil., Yamanashi pref.
|Camera Settings: ||Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3024×2016)|
|CCD Sensitivity...ISO1600, White Balance...Auto|
Around the middle of Dragon's body, this is a deep-deep sky object at 3.2 degrees SSE of beta Draconis.
It's a very dimmed galaxy without NGC numbers, recognized by catalogue numbers of UGC10214, Arp 188 and so on.
The galaxy has a long axis of only 3 arc minutes and a brightness of 14.4th magnitude.
|UGC10214 / Galaxy, type SB(s)c pec|
|R.A.||16h 06m 8.5s (2000.0)|
|Dec.||+55° 25' 01" (2000.0)|
|Diatnce||450 million light yrs.|
|Group of Galaxies||N/A|
|Other IDs||MCG9-26-56, CGCG275-23|
Arp 188, PGC57129
The galaxy has captured by the Hubble Space Telescope (HST) and its anomalous shape has been become clear.
The galaxy has a tail structure stretching toward east with a length of 3 arc minutes;
this fact has given this galaxy a nickname of "Tadpole Galaxy".
It's considered that the tail with a real length of 300 or 400 thousand light years has formed by a collision with a companion galaxy.
Another collided galaxy is concealed just behind UGC10214. It's estimated that the galaxy is about 45 millions light years away.
||Tadpole Galaxy captured by HST