RA 190.5210° · Dec -69.4076° · star
7 more points to reach Anomaly.
HR 4820 is an epic variable star. It lies about 2,038.5 light-years from Earth, sits in the constellation Mus, shines at apparent magnitude 6.31 and has spectral type F7Ib.
Its spectrum reads F7Ib — an F-type star — a little hotter, whiter and shorter-lived than the Sun.
Look for HR 4820 in the constellation Mus. At apparent magnitude 6.31, it is an easy target for binoculars.
Like any astronomical target, HR 4820 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 4820 scores 71 points on Spacedle's rarity scale, which places it in the epic tier. Another 7 points would lift it into a rarer tier.
That score comes from 8 science badges — Variable star, Distant (over 1,000 light-years), Yellow-white F-type star, Supergiant, Intrinsically luminous (Mv < −2), Strongly variable, Fades out of naked-eye view and A named variable 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.