RA 84.4112° · Dec 21.1425° · star
2 more points to reach Common.
Tianguan is a trash variable star. It lies about 445 light-years from Earth, sits in the constellation Tau, shines at apparent magnitude 2.97 and has spectral type B4IIIp.
Notable enough to have earned a proper name, not just a catalogue number.
Look for Tianguan in the constellation Tau. At apparent magnitude 2.97, it can be glimpsed with the unaided eye under dark skies.
Like any astronomical target, Tianguan is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
Tianguan scores 13 points on Spacedle's rarity scale, which places it in the trash tier. Another 2 points would lift it into a rarer tier.
That score comes from 2 science badges — Variable star and Has a proper name — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.