NGC 2357 — Sc in Gemini
Sc in Gemini, 3.2 arcminutes across, its light 109 million years old. Measured by HyperLEDA, photographed by Pan-STARRS1. Recorded once.
About NGC 2357
What you are looking at
NGC 2357 is a late-type spiral: a small central bulge and open, loosely wound arms full of young stars and star-forming gas. We see it almost exactly edge-on, so its whole disc appears as one thin band of light, with dust showing as a dark line along its length. From edge to edge its visible disc spans about 102,000 light-years, close to the width of the Milky Way.
What astronomers have recorded
SIMBAD, the reference database astronomers use, classes it as a member of a group of galaxies. Two supernovae have been recorded in it, the first in 2010; the most recent include SN 2010bj, SN 2015I. It is cited in 72 scientific papers indexed by SIMBAD, and recorded there under 16 different catalogue designations.
When this light set out
The light that reaches us from NGC 2357 today set out about 109 million years ago, when the first flowering plants had appeared. The galaxy is moving away from us at about 2,275 km/s (5.1 million mph), carried by the expansion of the universe.
Finding it in the sky
NGC 2357 lies in Gemini. It is best placed on winter evenings: around 9:30 pm in February it stands about 73° high in the south, seen from the middle of the United States.
Its neighbours
At almost the same distance from us, and so its neighbours in space as well as on the sky: UGC 3751 (0.9° away on the sky, at least 1,730,000 light-years from it); NGC 2365 (1.7° away on the sky, at least 3,170,000 light-years from it); UGC 3808 (2.0° away on the sky, at least 3,750,000 light-years from it).
By apparent size it is number 439 of the 12,657 galaxies on the Galaxy Origins register.
Measurements
| Catalogue | PGC 20592 |
|---|---|
| Morphological type | Sc |
| Angular diameter | 3.22′ |
| Right ascension | 07h17m41.0s |
| Declination | +23°21′24.1″ |
| Constellation | Gemini |
| Inclination | 90.0° |
| Light travel time | 109 million years |
| Bar | not recorded |
Check every figure above in the NASA/IPAC Extragalactic Database
What is sold
A print of this galaxy and the record of the calculation, once. When it sells it leaves the register and is not offered again. We assign no names and no ownership — nobody can sell you those.
At 3.2 arcminutes this is a Exceptional galaxy, which is the tier where a real photograph shows clear structure and dust lanes. The tier comes from the measured diameter, not from a price list.
Take this galaxy — $1,290 Browse the Collection