RA 138.4053° · Dec 21.2832° · star
2 more points to reach Common.
HR 3657 is a trash star. It lies about 508 light-years from Earth, sits in the constellation Cnc, shines at apparent magnitude 6.48 and has spectral type A2V.
Its spectrum reads A2V — an A-type star: white-hot, typically about twice the Sun's mass, and the class most of the sky's famous bright stars belong to.
Look for HR 3657 in the constellation Cnc. At apparent magnitude 6.48, it is an easy target for binoculars.
Like any astronomical target, HR 3657 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.
HR 3657 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 4 science badges — Star, On the zodiac, White A-type star and Main-sequence star — 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.