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Supernova remnant

RX J1713.7-3946

Also SNR G347.3-00.5

Open in OuranosCompare its size

A young supernova remnant in Scorpius that glows brightly in very-high-energy gamma rays.

Measured

Distance
about 2,935 light-years (published estimates 979–4,892)
Size
about 56 light-years across (approximate)
Constellation
Scorpius
Position (J2000)
RA 17h 12m 27s, Dec −39.69°

How far, from the Sun

About 2,940 light-years. To cross it:

  • Light2,940 years
  • Voyager 1's speed52.2 million years
  • Driving at 100 km/h31.7 billion years

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

Facts

  • It may be the remnant of a supernova recorded in China in 393.
  • Its distance is uncertain; the published estimate has a wide margin of error.

Where this comes from

  • Ranasinghe & Leahy 2022, ApJ 940, 63 (0.9 ± 0.6 kpc)
  • 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.