NGC 6742: Difference between revisions

NGC 6742
Emission nebula
Planetary nebula
	NGC 6742, as photographed by the Hubble Space Telescope
Observation data: J2000 epoch
Right ascension	18h 59m 20s
Declination	+48° 27’ 55”
Constellation	Draco
Physical characteristics
Absolute magnitude (V)	13.4
	See also: Lists of nebulae

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Revision as of 15:22, 22 April 2024

NGC 6742 (also known as Abell 50) is a planetary nebula in the constellation Draco^[1]. NGC 6742 was discovered by German-British astronomer William Herschel in 1788. Very few studies have been carried out on NGC 6742 and the identification of the central star of the nebula by the Kepler Space Telescope is uncertain^[2].

Morphology

Two distances are indicated in the SIMBAD astronomical database: 5,150 ± 1,030 kpc (∼16,800 ly) and approximately 5,091 pc (∼16,600 ly)^[3]. Its apparent size is 0.55′3. No data is available for its speed.

Observation

NGC 6742 has a magnitude of 13.4, meaning that its surface brightness is high enough to be seen with a 25 cm diameter telescope. It appears as a round disk measuring 30"6.

Gallery

External links

NGC 6742 at SIMBAD

References

^ "NGC 6742". simbad.u-strasbg.fr. Retrieved 2024-04-22.
^ astrovalleyfield.ca https://astrovalleyfield.ca//AstronomieCompl/NGC%20et%20autres/WolfgangS/N6700_exc_web.htm. Retrieved 2024-04-22. {{cite web}}: Missing or empty |title= (help)
^ "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-04-22.

[1] "NGC 6742". simbad.u-strasbg.fr. Retrieved 2024-04-22.

[2] astrovalleyfield.ca https://astrovalleyfield.ca//AstronomieCompl/NGC%20et%20autres/WolfgangS/N6700_exc_web.htm. Retrieved 2024-04-22. {{cite web}}: Missing or empty |title= (help)

[3] "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-04-22.

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[2]

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@@ Line 1: / Line 1: @@
 {{Infobox nebula|image=NGC 6742 legacy dr9.jpg|type=Planetary|name=NGC 6742|epoch=J2000|dec=+48° 27’ 55”|ra=18h 59m 20s|absmag_v=13.4|constellation=[[Draco (constellation)|Draco]]|caption=NGC 6742, as photographed by the [[Hubble Space Telescope]]}}{{Short description|Planetary nebula in the constellation Draco}}
-'''NGC 6742''' (also known as '''Abell 50''')  is a [[planetary nebula]] in the constellation [[Draco (constellation)|Draco]]. NGC 6742 was discovered by German-British astronomer [[William Herschel]] in 1788. Very few studies have been carried out on NGC 6742 and the identification of the central star of the nebula by the [[Kepler space telescope|Kepler Space Telescope]] is uncertain.
+'''NGC 6742''' (also known as '''Abell 50''')  is a [[planetary nebula]] in the constellation [[Draco (constellation)|Draco]]<ref>{{Cite web |title=NGC 6742 |url=https://simbad.u-strasbg.fr/simbad/sim-id |access-date=2024-04-22 |website=simbad.u-strasbg.fr}}</ref>. NGC 6742 was discovered by German-British astronomer [[William Herschel]] in 1788. Very few studies have been carried out on NGC 6742 and the identification of the central star of the nebula by the [[Kepler space telescope|Kepler Space Telescope]] is uncertain<ref>{{Cite web |url=https://astrovalleyfield.ca//AstronomieCompl/NGC%20et%20autres/WolfgangS/N6700_exc_web.htm |access-date=2024-04-22 |website=astrovalleyfield.ca}}</ref>.
 == Morphology ==
-Two distances are indicated in the [[SIMBAD|SIMBAD astronomical database]]: 5,150 ± 1,030 kpc (∼16,800 ly) and approximately 5,091 pc (∼16,600 ly). Its [[Angular diameter|apparent size]] is 0.55′3. No data is available for its speed.
+Two distances are indicated in the [[SIMBAD|SIMBAD astronomical database]]: 5,150 ± 1,030 kpc (∼16,800 ly) and approximately 5,091 pc (∼16,600 ly)<ref>{{Cite web |title=By Name {{!}} NASA/IPAC Extragalactic Database |url=https://ned.ipac.caltech.edu/byname?objname=NGC+6742&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 |access-date=2024-04-22 |website=ned.ipac.caltech.edu}}</ref>. Its [[Angular diameter|apparent size]] is 0.55′3. No data is available for its speed.
 == Observation ==
-With a magnitude of 13.4, you might think it is too faint to be visible in a small telescope, but its surface brightness is high enough to be seen with a 25 cm diameter telescope. It appears as a round disk measuring 30"6.
+NGC 6742 has a magnitude of 13.4, meaning that its surface brightness is high enough to be seen with a 25 cm diameter [[telescope]]. It appears as a round disk measuring 30"6.
 == Gallery ==
-[[File:NGC 6742 PanS Emplacement.jpg|frameless]][[File:NGC 6742 PanS.jpg|frameless|332x332px]]
+[[File:NGC 6742 PanS.jpg|frameless|332x332px]][[File:NGC 6742 PanS Emplacement.jpg|frameless]]
 == See also ==
@@ Line 19: / Line 21: @@
 == External links ==
+* [https://simbad.u-strasbg.fr/simbad/sim-id?Ident=%40260662&Name=NGC++6742&submit=display+all+measurements#lab_meas NGC 6742] at [[SIMBAD]]
 == References ==