NGC 4490

galaxy NGC 4490 (catalog) brightest member of galaxy group Arp 269
Cocoon Galaxy •MCG +07-26-014 •UGC 7651 •PGC 41333 •
Position (epoch J2000)
Constellation	Canes Venatici
Position	Ra 12:30:36.1 Dec +41:38:33
DSS images	10' · 20' · 30' · 45' · 1°
Appearance
Photo by André Hartmann, RC-203/1624, FOV:47'x32', 4 March 2013, Erkner, Brandenburg, DE
Arp 269: NGC 4490 (left) and NGC 4485 (small, lower right) Sketch by Vedran Vrhovac, 300/1500 Dobson, 143, 10.5 mm Hyperion, FOV:20 ', 30 March 2008, LM: 5.2
Apparent mag.	9.8
Surface brightness	12.9
Size	6.3' x 3.1'
Position angle	125 °
Class	... III
Dreyer's description	vB vL mE 130° r sf of 2
Other
Notes
List:Galaxies in Canes Venatici
Map: RA 12.375, DEC 41.25 •

NGC 4490 (Cocoon Galaxy) is a galaxy in Canes Venatici. With NGC 4485, it makes galaxy pair Arp 269.

Appearance

Telescopes 71mm - 100mm (2.8" - 3.9"), binoculars 51mm - 70mm

• (IAAC) Obj: NGC 4490 - Inst: Vixen 9x63 binoculars  

Telescopes 101mm - 141mm (4" - 5.5"), binoculars 71mm - 100mm

• (IAAC) Obj: NGC 4490 - Inst: Astroscan 2001 4.1" f4.2  
• NGC 4490 and NGC 4485 observation and sketch by Rony De Laet with Meade ETX 105  
• NGC 4490 observation and sketch by Iiro Sairanen with Newton 110/805mm   (1)
• NGC 4490 observation and sketch by Iiro Sairanen with Newton 110/805mm   (2)

Telescopes 141mm - 177mm (5.6" - 6.9")

• NGC 4490 observation by Brian Rachford with 6" f/8 Newtonian (SEEN)  

Telescopes 178mm - 234mm (7" - 9.2")

• NGC 4485 & 4490 observation and sketch by Jere Kahanpää with Newton 205/1000  
• NGC 4490 observation by Tom Polakis with 8", 13" and 20"  

Telescopes 235mm - 305mm (9.25" - 12")

• (hr)NGC 4490 with 12" (300mm) f/5 GSO dobson (Tristač) by Vedran Vrhovac (SEEN, Mar 30 2008, LM=5.2)  
• NGC 4490 observation by Sjoerd Dufoer @ deepskylog.be (with 12" F/5.3 (305 mm))  

Telescopes 306mm - 381mm (12.1" - 15")

• Canes Venatici by Steve Coe - NGC 4490 with 13.1" f/5.6 and 17.5"  
• NGC 4490 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector 

Telescopes above 15"

• NGC 4490 and NGC 4485 observation and sketch by Iiro Sairanen with Newton 406/1830mm  
• NGC 4490 observation and sketch by Iiro Sairanen with Newton 406/1830mm  
• (IAAC) OBJECTS: NGC 4490, NGC 4485 INST: 18" f/4.2 Newt. LM=5.0  
• (IAAC) Interacting pair NGC 4490 (Cocoon galaxy), NGC4485 20" Dob.