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About this Object

Object Name:

Arp 87

Object Description:

Interacting Galaxy Pair

Position (J2000):

R.A. 11h 40m 46s.12
Dec. +22° 26' 44".80

Constellation:

Leo

Distance:

Approximately 300 million light-years (92 million parsecs) away.

Dimensions:

This image is roughly 2.3 arcminutes (203,000 light-years or 62 kiloparsecs) wide.

About the Data

Data Description:

The Hubble image was created from HST data from proposal 11092: K. Noll, H. Bond, C. Christian. L. Frattare, F. Hamilton, Z. Levay, M. Mutchler, W. Januszewski (Hubble Heritage Team/STScI).

Instrument:

WFPC2

Filters:

F450W (B), F555W (V), F656N (Halpha + [N II]), and F814 (I)

Exposure Date:

February 2007

Exposure Time:

6.3 hours

About this Image

Image Credit:

NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

Release Date:

October 30, 2007

Color:

This image is a composite of many separate exposures made by the WFPC2 instrument on the Hubble Space Telescope. Three filters were used to sample broad wavelength ranges, while one filter was used to sample a narrow wavelength band. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are:

F450W (B)

blue

F555W (V)

green

F656N (Halpha + [N II]) and F814 (I)

red

Orientation/Scale: