RA 51.8197° · Dec -61.2591° · star
10 more points to reach Common.
HD 21765 is a trash variable star. It lies about 343.7 light-years from Earth, sits in the constellation Ret, shines at apparent magnitude 7.89 and has spectral type F5V.
HD 21765 is a trash variable star worth 5 points across 1 science badge. Explore its facts, badges and place on the sky map, then add it to your dex on Spacedle.
Look for HD 21765 in the constellation Ret. At apparent magnitude 7.89, it is an easy target for binoculars.
Like any astronomical target, HD 21765 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.
HD 21765 scores 5 points on Spacedle's rarity scale, which places it in the trash tier. Another 10 points would lift it into a rarer tier.
That score comes from 1 science badge — 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.