NGC 1042 — SABc in Cetus
SABc in Cetus, 3.9 arcminutes across, its light 66 million years old. Measured by HyperLEDA, photographed by Pan-STARRS1. Recorded once.
About NGC 1042
What you are looking at
NGC 1042 is a late-type spiral: a small central bulge and open, loosely wound arms full of young stars and star-forming gas. A weak bar of stars crosses its centre. It is tilted about 58° to our line of sight, enough to show both the shape of its arms and the depth of its disc. From edge to edge its visible disc spans about 74,000 light-years (taking its redshift distance, which for a galaxy this near is approximate), about 76% of the Milky Way’s width.
What astronomers have recorded
SIMBAD, the reference database astronomers use, classes it as a Seyfert galaxy: its nucleus is lit by gas falling into its central black hole. It is cited in 288 scientific papers indexed by SIMBAD, and recorded there under 23 different catalogue designations.
When this light set out
The light that reaches us from NGC 1042 today set out about 66 million years ago, when an asteroid had ended the age of dinosaurs. The galaxy is moving away from us at about 1,371 km/s (3.1 million mph), carried by the expansion of the universe. For a galaxy this close, its own motion through space is a large share of that speed, so the distance worked out from it is approximate; distances measured from individual stars in it can differ.
Finding it in the sky
NGC 1042 lies in Cetus. It is best placed on winter evenings: around 9:30 pm in December it stands about 42° 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: NGC 1047 (0.3° away on the sky, at least 330,000 light-years from it); NGC 1035 (0.4° away on the sky, at least 430,000 light-years from it); NGC 1051 (1.5° away on the sky, at least 1,730,000 light-years from it); NGC 988 (1.5° away on the sky, at least 1,750,000 light-years from it), and 4 more.
By apparent size it is number 253 of the 12,657 galaxies on the Galaxy Origins register.
Measurements
| Catalogue | PGC 10122 |
|---|---|
| Morphological type | SABc |
| Angular diameter | 3.89′ |
| Right ascension | 02h40m24.0s |
| Declination | -08°26′00.9″ |
| Constellation | Cetus |
| Inclination | 58.1° |
| Light travel time | 66 million years |
| Bar | yes, from the catalogue |
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 3.9 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.
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