RA 197.4504° · Dec -23.3815° · blackhole
16 more points to reach Anomaly.
GW170817 remnant is an epic black hole. It lies about 130,000,000 light-years from Earth and sits in the constellation Hya.
We know about it because it shook spacetime: the merger that formed it stretched and squeezed the Earth by less than the width of a proton, and detectors on the ground recorded the ripple passing through.
Look for GW170817 remnant in the constellation Hya.
Like any astronomical target, GW170817 remnant 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.
GW170817 remnant scores 62 points on Spacedle's rarity scale, which places it in the epic tier. Another 16 points would lift it into a rarer tier.
That score comes from 5 science badges — Black hole, Outside our galaxy entirely, Stellar-mass black hole, Dormant (nothing left to eat) and Heard as a gravitational wave — 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.