Bug Nebula
Scientific overview
Bug Nebula is a planetary nebula in the constellation Scorpius. It shines at apparent magnitude 9.6 and spans about 0.74 arcminutes of sky.
Observation guide
Guidance follows standard observing practice, derived from the object's real magnitude and position. A dark, moonless sky always helps.
Location in the sky
Precision measurements
Distances and velocities from SIMBAD · NGC 6302
| Distance | 2,433 ly | SIMBAD · catalogued |
| Physical size (major axis) | 0.523748 ly | SIMBAD · derived |
| Radial velocity | -35.7 ± 2 km/s | SIMBAD · measured |
| Right ascension (ICRS) | 258.4354 deg | SIMBAD · measured |
| Declination (ICRS) | -37.1031 deg | SIMBAD · measured |
Full field-level provenance
- Distance: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · mesDistance · dist · 2010ApJ...714.1096S · catalogued value · source value 0.746 kpc · retrieved 2026-07-11
- Physical size (major axis): Centre de données astronomiques de Strasbourg (CDS) · derived (OpenNGC angular size × SIMBAD distance) · physical size = angular size × distance (small-angle); angular size from OpenNGC, distance from SIMBAD mesDistance · derived · retrieved 2026-07-11
- Radial velocity: Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · rvz_radvel · 1953GCRV..C......0W · direct catalogue measurement · retrieved 2026-07-11
- Right ascension (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · ra · 2005AJ....130..586W · direct catalogue measurement · retrieved 2026-07-11
- Declination (ICRS): Centre de données astronomiques de Strasbourg (CDS) · SIMBAD · basic · dec · 2005AJ....130..586W · direct catalogue measurement · retrieved 2026-07-11
Physical size is derived from the OpenNGC angular size and the catalogued distance (small-angle: size = angle × distance). This is a Galactic object: its Doppler shift is shown as a radial velocity, not a cosmological redshift. Fields a source did not provide are omitted, never invented.
Other objects in Scorpius
| Object | Type | Mag | Size (′) |
|---|---|---|---|
| NGC 6231C 76 · NGC 6231 | Open cluster | 2.6 | 13.8 |
| Ptolemy's ClusterM 7 · NGC 6475 | Open cluster | 3.3 | 22.2 |
| IC 4592 | Reflection nebula | 3.9 | 60 |
| Butterfly ClusterM 6 · NGC 6405 | Open cluster | 4.2 | 15.6 |
| IC 4605 | Nebula | 4.7 | 30 |
| M 4M 4 · NGC 6121 | Globular cluster | 5.4 | 28.2 |
| NGC 6281NGC 6281 | Open cluster | 5.4 | 10.2 |
| NGC 6374NGC 6374 | Open cluster | 5.5 | 6.9 |
Sources
The primary and reference sources this topic draws on.
- OpenNGCOpenNGC (M. Verga) — NGC/IC, Messier, and Caldwell catalogue data
Openly-licensed deep-sky catalogue: object types, positions, magnitudes, sizes, morphology, and cross-identifiers.