Supernova Remnant Sh 2-91

Sharpless 2-91
Sharpless 2-91: Section of the STScI/NASA Digitized Sky Survey 2 (DSS2). Here could be your picture. [147]


The American astronomer Stewart Sharpless searched in the 1950-ies the photo plates of the «Palomar Observatory Sky Survey» made with the 48 inch Schmidt telescope and published it in 1959 a catalogue of 313 H-II regions, among them Sh 2-91. He noted: «Very long, thin filament.» [310] In 1965 Beverly T. Lynds added the nebula Sh 2-91 as LBN 064.22+04.16 (LBN 147) in her «Catalogue of Bright Nebulae». [270]

Physical Properties

This nebula Sh 2-94 is listed as H-II region in Simbad, but it is indeed just a part of the much larger supernova remnant SNR G65.3+5.7 with apparent size of the about 310 × 240 arcminutes. Optical proper motions and velocities indicate a distance of 0.8 kpc, optical extinction suggests a distance of 1.5 kpc. [47, 48] It is weaker than the famous Veil Nebula.

Data from Simbad [145]
Name Sh 2-91, LBN 64.22+4.16, LBN 147
Right Ascension (J2000.0) 19h 35m 36s
Declination (J2000.0) +29° 36' 00"

Finder Chart

The nebula Sharpess 2-91 is located in the constellation Cygnus. The best observation time is March to December.

Finder Chart Supernova Remnant Sh 2-91
Supernova Remnant Sh 2-91 in constellation Cygnus. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 15°