Star profile
4 Sagittarii
Hot blue starWhat is 4 Sagittarii
4 Sagittarii hangs some 415 light-years out, in one of the richest stretches of sky —the lane that points toward the heart of the Milky Way. Its blue-white light betrays a surface far hotter than the Sun's and a luminosity worth hundreds of suns. Tagged as a suspected astrometric binary, its faint wobble hints at an unseen companion no telescope has yet caught on camera.
Where it is and when to see it
4 Sagittarii lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is June: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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The signature wall
Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.
A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
Astronomical data for 4 Sagittarii
- Constellation
- Sagittarius
- Apparent magnitude
- 4.74
- Distance
- 415.5 light years
- Coordinates (J2000)
- RA 269.948° · Dec -23.816°
- Catalogue
- HIP 88116 · HD 163955
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
Other stars in Sagittarius
Sagittarius has 117 stars in Stelvia's catalogue. Here are a few of them.
- Kaus AustralisEpsilon Sagittarii1.79
- NunkiSigma Sagittarii2.05
- AscellaZeta Sagittarii2.60
- Gamma 1 Sagittarii4.66
- HIP 896784.66
- TerebellumOmega Sagittarii4.70
- HIP 987614.77
- 21 Sagittarii4.81