176 Iduna

Picture of the Day · NASA

NGC 3660 and Burçin's Galaxy

2026-05-26

The upper galaxy might be more photogenic, but the lower galaxy is more unusual. The galaxy up top is NGC 3660, a spiral galaxy similar to our own Milky Way galaxy in that it has several bright blue spiral arms and a central bar of stars, dust, and gas. Captured by chance in the featured deep and colorful image, surprisingly, is SN 2026cff, a supernova found just to the right of the central bar. Farther in the distance is the bottom galaxy, known informally as Burçin’s galaxy, but formally cataloged as LEDA 1000714. The center of this galaxy appears to be an old elliptical galaxy, but it is strangely surrounded by not one but two rings of stars. What created Burçin's galaxy is a mystery and remains a continuing topic of research, but it likely involves the accretion of one or more smaller galaxies.

via NASA APOD

Key facts

Discovered by

C. H. F. Peters

Discovery date

14 October 1877

Pronunciation

/ iː ˈ d uː n ə /

Named after

Iðunn

Alternative designations

A877 TB; 1945 RQ

Minor planet category

Main belt

Observation arc

138.50 yr (50587 d)

Aphelion

3.7235 AU (557.03 Gm )

Perihelion

2.6526 AU (396.82 Gm)

Semi major axis

3.1880 AU (476.92 Gm)

Orbital period sidereal

5.69 yr (2079.1 d )

Mean anomaly

165.15 °

Mean motion

0° 10 23.34 / day

Wikidata facts

Instance of

asteroid

Named after

Iðunn

Followed by

Q214387

Follows

175 Andromache

Parent body

Sun

Minor-planet group

asteroid belt

Diameter

+106.976

Orbital period

+2071.515748900403