621 Werdandi

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

August Kopff

Discovery site

Heidelberg

Discovery date

11 November 1906

Alternative designations

1906 WJ

Observation arc

104.13 yr (38035 d)

Aphelion

3.5597 AU (532.52 Gm )

Perihelion

2.6941 AU (403.03 Gm)

Semi major axis

3.1269 AU (467.78 Gm)

Orbital period sidereal

5.53 yr (2019.6 d )

Mean anomaly

299.847 °

Mean motion

0° 10 41.7 / day

Inclination

2.3146°

Longitude of ascending node

67.107°

Wikidata facts

Instance of

asteroid

Named after

Verðandi

Followed by

622 Esther

Follows

620 Drakonia

Parent body

Sun

Minor-planet group

asteroid belt

Diameter

+29.726

Orbital period

+2019.322926711519

Image

621Werdandi (Lightcurve Inversion).png