Star Stars · In Puppis
Tureis
Tureis, ρ Puppis, is a yellow-white star in Puppis: the 140th brightest star in the night sky.
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- Constellation
- Puppis
- Designation
- ρ Puppis
- Apparent magnitude
- 2.83 · 140th brightest star in the night sky
- Spectral class
- F2mF5IIp
- Distance
- 63.5 light-years
- Highest at midnight
- mid January
- Position (J2000)
- RA 08h 08m · Dec −24° 18′
A yellow-white star, around 7,200 K, like Procyon. About 29× brighter than the faintest star the eye can see. Gives off about 24 times the Sun's visible light. The light you are seeing left in 1962.
When to see it
On the night of Wed 20 Jan 2027, when it is highest around midnight, on each city’s own clock:
| From | Rises | Highest | Sets |
|---|---|---|---|
| London GMT | 20:28 | 00:08 · 14° | 03:49 |
| New York EST | 19:35 | 00:03 · 25° | 04:30 |
| Singapore GMT+8 | 19:17 | 01:13 · 64° | 07:10 |
| Sydney GMT+11 | 17:55 | 01:04 · 81° | 08:14 |
Common questions
- Can I see it from 50° north?
- Yes. It rises and sets, and at its highest it stands 16° up in the south.
- Can I see it from 35° south?
- Yes. It rises and sets, and at its highest it stands 79° up in the north.
- When is the best time of year to see it?
- Around mid January, when it stands opposite the Sun and is highest at midnight. It comes round about two hours earlier each month, so by late April it is highest in the early evening, and in mid October not until the hours before dawn.
- How far away is it, and how bright?
- It is 63.5 light-years away, and shines at magnitude 2.83 in our sky. From that far, the Sun would be a star of magnitude 6.3: one you would need a dark country sky to see at all.
- Naked eye, binoculars or telescope?
- The naked eye, even from a city: at magnitude 2.83 it is brighter than the faintest stars a city sky still shows, about magnitude 4.5.
Look for
Start from Aludra: Tureis is 11° north-east of it, a fist at arm’s length.
Look for
From 50° north it climbs to 16°; from 35° north it climbs to 31°; from the equator it climbs to 66°; from 35° south it climbs to 79°.
Science
Tureis’s surface is about 7,200 K, some 1,400 K hotter than the Sun’s 5,772 K, so its light is strongest at about 400 nm, where the Sun’s is strongest at 500 nm. Moved to 33 light-years, the distance astronomers compare stars at, it would shine at magnitude 1.4, about as bright as Regulus looks to us.
Did you know
Against Aludra, the brighter star the hop starts from: Aludra looks 1.4 times as bright as Tureis in our sky; Aludra is 1,989 light-years away and Tureis 64 light-years, so side by side Aludra would give off 1,400 times as much light as Tureis.
Science
Tureis is the 24th nearest to us of the 156 stars on these pages with a measured distance. Its nearest neighbour among them in space is Alsephina, about 42 light-years from it; on our sky the two are 31° apart.
Look for
The Sun passes 43° north of Tureis around late July, when it is highest at noon, in daylight: the weeks either side are its worst time of year. From 50° north it is above the horizon for about 8 hours a day, from 35° north about 10 and from 35° south about 14. It is 4° from the plane of the Milky Way, inside the band a dark sky shows.