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
- Paul Götz
- Discovery site
- Heidelberg
- Discovery date
- 8 January 1905
- Pronunciation
- / ˈ f ɪ l ɪ s / FIL -iss
- Alternative designations
- 1905 PW
- Observation arc
- 108.29 yr (39553 d)
- Aphelion
- 2.7179 AU (406.59 Gm )
- Perihelion
- 2.2115 AU (330.84 Gm)
- Semi major axis
- 2.4647 AU (368.71 Gm)
- Orbital period sidereal
- 3.87 yr (1413.4 d )
- Mean anomaly
- 301.06 °
- Mean motion
- 0° 15 16.956 / day
- Inclination
- 5.2400°
Article
556 Phyllis is a minor planet orbiting the Sun. It is an S-type asteroid with a diameter of 38 km and a geometric albedo of 0.185. Based on photometric observations between 1998 and 2006, it has a synodic rotation period of 4.293 ± 0.001 hours. The asteroid is named after Phyllis, a character in Greek mythology.
References