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Supernova remnant

Vela Junior

Also RX J0852.0-4622 · SNR G266.2-01.2

Open in OuranosCompare its size

A young supernova remnant seen on the sky behind the larger, older Vela remnant.

Measured

Distance
2,727 light-years
Size
about 96 light-years across (approximate)
Constellation
Vela
Position (J2000)
RA 8h 52m 00s, Dec −46.33°

How far, from the Sun

2,730 light-years. To cross it:

  • Light2,730 years
  • Voyager 1's speed48.5 million years
  • Driving at 100 km/h29.4 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 is seen through the much larger Vela supernova remnant, which lies closer to us.

How it was found

  • It was found in X-ray images from the ROSAT satellite in 1998.

Where this comes from

  • Chen et al. 2025, ApJ 988, 176 (0.836 ± 0.002 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.