RA 274.8401° · Dec -25.4072° · blackhole
41 more points to reach Mythic.
V4641 Sagittarii is an anomaly black hole. It lies about 20,000 light-years from Earth and sits in the constellation Sgr.
Gas spiralling in is squeezed and heated to millions of degrees before it falls, so the disc around it blazes brighter than anything else in the neighbourhood.
Look for V4641 Sagittarii in the constellation Sgr.
Like any astronomical target, V4641 Sagittarii 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.
V4641 Sagittarii scores 79 points on Spacedle's rarity scale, which places it in the anomaly tier. Another 41 points would lift it into a rarer tier.
That score comes from 8 science badges — Black hole, Distant (over 1,000 light-years), Has a proper name, Toward the galactic centre, On the zodiac, Stellar-mass black hole, X-ray binary: stripping a living star and Firing a relativistic jet — 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.