Astronomical data · SIMBAD
- Object type
- Sy2
- Redshift
- z = 0.013159962489260213
- Coordinates
- RA 290.9913° · Dec -59.9225°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Pavo
- Right ascension
- 19 23 57.935
- Declination
- −59 ° 55 ′ 21.04 ″
- Redshift
- 0.012462 ± 0.000123
- Heliocentric radial velocity
- 3,736 km/s
- Distance
- 173 Mly (53 Mpc )
- Type
- (R 1 R′ 2 )SB(r)a
- Apparent size v
- 1′.197 × 0′.814 ( NIR )
via Wikipedia infobox
Wikidata facts
- Constellation
- Pavo
- Distance from Earth
- 50
- Image
- NGC 6782HSTfull.jpg
Show 11 more facts
- catalog code
- FAUST 4494
- redshift
- 0.012462
- galaxy morphological type
- 1.0
- Commons category
- NGC 6782
- discoverer or inventor
- John Frederick William Herschel
- time of discovery or invention
- 1834-07-12
- apparent magnitude
- 8.868
- right ascension
- 290.9913958
- declination
- -59.9225111
- radial velocity
- 3903
- epoch
- J2000.0
Sources (2)
via Wikidata · CC0
~2 min read
Encyclopedic overview
NGC 6782 is a barred spiral galaxy located in the southern constellation of Pavo, at a distance of approximately 173 megalight-years from the Milky Way. It was discovered on July 12, 1834 by English astronomer John Herschel. John L. E. Dreyer described it as, "considerably faint, considerably small, round, a little brighter middle, 9th magnitude star to south". The morphological classification of NGC 6782 is (R1R′2)SB(r)a, indicating a barred spiral galaxy with a multiple ring system and tightly-wound spiral arms. It is seen nearly face-on, being inclined by an angle of 27.2°±0.2° to the line of sight from the Earth.
At the galactic core is an almost circular nuclear ring at the inner Lindblad resonance. This is attached to the primary bar, which extends out to a somewhat pointy, diamond-shaped inner ring. It is actually a double-barred galaxy, with an interior bar inside the nuclear ring. A pair of faint spiral arms extend out from the inner ring to the outer parts of the galaxy, where it joints a double outer ring system. Both inner rings of the galaxy are undergoing star formation, producing hot OB stars, with little star formation occurring in the remainder.
Excerpted from Wikipedia’s “NGC 6782” article, available under the CC BY-SA 4.0 licence.