Evidence for this explosion comes from optical telescope data, from Korean records of a “guest” star at the position of R Aqr in 1073 and information from Antarctic ice cores. An inner ring was generated by an eruption in the early 1770s. Optical data (red) in a new composite image of R Aqr shows the inner ring. The outer ring is about twice as wide as the inner ring, but is too faint to be visible in this image.
Fast Facts for R Aquarii:
Scale: Image is 4.2 x 3.4 arcmin (About 0.86 x 0.70 light years).
Category: Normal Stars & Star Clusters, White Dwarfs & Planetary Nebulas
Coordinates (J2000): RA 23h 49m 34.6s | Dec -15° 17' 04"
Observation Date: 3 pointings between Sep 2001 and Oct 2005
Observation Time: 34 hours 58 minutes (individual times: 6.3 hours, 18.5 hours, 10.1 hours)
Obs. ID: 651, 4546, 5438
Color Code: X-ray (Cyan); Optical (Red)
Distance Estimate: About 710 light years