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Supernova remnant

Pa 30

Also IRAS 00500+6713 · SN 1181 remnant

Open in Ouranos

A faint nebula in Cassiopeia that is very probably the remnant of the supernova seen from China and Japan in 1181.

Measured

Distance
about 8,024 light-years (published estimates 7,543–8,570)
Constellation
Cassiopeia
Position (J2000)
RA 0h 53m 11s, Dec +67.50°

How far, from the Sun

About 8,020 light-years. To cross it:

  • Light8,020 years
  • Voyager 1's speed143 million years
  • Driving at 100 km/h86.6 billion years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • Its central star is a rare, extremely hot remnant, thought to be left by a white-dwarf explosion or merger that did not destroy it.
  • Its distance comes from a Gaia parallax: the tiny yearly shift in its position as the Earth circles the Sun.

Where this comes from

  • Gaia DR3 parallax 0.4065 ± 0.0259 mas of its central star, Gaia DR3 526287189172936320 (Gaia Collaboration 2023, A&A 674, A1)
  • This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
  • This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).

Every catalogue Ouranos draws is credited on the credits page.