| Nebula | |
|---|---|
 | |
| Observation data: J2000 epoch | |
| Right ascension | 09h 12m 26s |
| Declination | -42° 25′ 39″ |
| Constellation | Vela |
| Designations | PK 265+4.1, ESO 314-PN6, AM 0910-421, CS=13.8, HD 79384, IRAS 09105-4213, WEB 8618, PMN J0912-4225, 2MASS J09122664-4225397Contents |
NGC 2792 is a planetary nebula located in the constellation Vela. [1] NGC 2792 was discovered by British astronomer John Herschel in 1835. [2]
With an apparent visual magnitude of 11.6, [3] you must use a telescope with an aperture of at least 200 mm to observe it. [4]
Two very similar distances are indicated on the SIMBAD database: 3.086 ± 0.617 kpc (~10,100 ly) and approximately 3050 pc (~9,950 ly). [5]
The apparent size of the nebula is 0.350′ × 0.315, which, given the distance of 3,086 ± 617 pc and through simple calculation, equates to an actual size of 1.02 ± 0.20 al × 0 .92 ± 0.18 ly. [5]
Two identical speed values are also indicated on SIMBAD, i.e. 14.0 ± 5.0 km/s. According to a more recent publication (2023) the speed of the nebula is 12.7 ± 8 km/s. [5]
The kinematic age of a planetary nebula can be estimated from its expansion speed. According to González-Santamaría and his colleagues, the expansion speed of NGC 2792 is 20 km/s, which gives it a kinematic age of 3.5 thousand years. According to a more recent publication, its expansion speed is 20.2 km/s. [6]
According to González-Santamaría, it has been approximately 50,860 years since the star left the asymptotic giant branch and the nebula enveloping it reached 1% of the mass of the progenitor. [6]
The visual magnitude of this star is equal to 16.74 and its mass is estimated at 1.163 solar masses. The radius of the nebula is estimated at 0.108 pc. [7]
The Dumbbell Nebula is a planetary nebula in the constellation Vulpecula, at a distance of about 1360 light-years. It was the first such nebula to be discovered, by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and diameter of about 8 arcminutes, it is easily visible in binoculars and is a popular observing target in amateur telescopes.
The Eskimo Nebula, also known as the Clown-faced Nebula, Lion Nebula, or Caldwell 39, is a bipolar double-shell planetary nebula (PN). It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual, light-year-long filaments.
NGC 1514, also known as the Crystal Ball Nebula, is a planetary nebula in the zodiac constellation of Taurus, positioned to the north of the star Psi Tauri along the constellation border with Perseus. Distance to the nebula is 466 pc, according to GAIA DR2 data.
NGC 7662 is a planetary nebula located in the northern constellation Andromeda. It is known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22. This nebula was discovered October 6, 1784 by the German-born English astronomer William Herschel. In the New General Catalogue it is described as a "magnificent planetary or annular nebula, very bright, pretty small in angular size, round, blue, variable nucleus". The object has an apparent visual magnitude of 8.3 and spans an angular size of 32″ × 28″. Parallax measurements give a distance estimate of 5,730 ± 340 ly (1,757 ± 103 pc).
NGC 6884 is a planetary nebula located in the constellation Cygnus, less than a degree to the southwest of the star Ο1 Cygni. It lies at a distance of approximately 12.5 kly from the Sun. The nebula was discovered on May 8, 1883, by American astronomer Edward C. Pickering.
NGC 2899 is a planetary nebula in the southern constellation of Vela. It was discovered by English astronomer John Herschel on February 27, 1835. This nebula can be viewed with a moderate-sized amateur telescope, but requires a larger telescope to resolve details. NGC 2899 is located at a distance of 3,350 ± 670 light-years (1,026 ± 205 pc) from the Sun and 25,894 ± 3 light-years (7,939 ± 1 pc) from the Galactic Center.
NGC 2242 is a planetary nebula in the constellation Auriga. It was discovered by Lewis A. Swift on November 24, 1886, and was thought to be a galaxy until a study published in 1987 showed it to be a planetary nebula. The nebula is located about 6,500 light-years away, and about 1,600 light-years above the galactic plane.
NGC 646 is a large barred spiral galaxy located in the constellation Hydrus. Its speed relative to the cosmic microwave background is 8,145 ± 19 km/s, which corresponds to a Hubble distance of 120.1 ± 8.4 Mpc. NGC 646 was discovered by British astronomer John Herschel in 1834. It forms an interacting galaxy pair.
NGC 6742 is a planetary nebula in the 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 is uncertain.
NGC 6563 is a planetary nebula in the constellation Sagittarius. NGC 6563 was discovered by Scottish astronomer James Dunlop in 1826. Renowned observer and author Stephen James O'Meara described it as a "hidden treasure".
NGC 2008 is a distant spiral galaxy located in the constellation Pictor. Its speed relative to the cosmic microwave background is 10,367 ± 11 km/s, which corresponds to a Hubble distance of 153 ± 11 Mpc. NGC 2008 was discovered by British astronomer John Herschel in 1834. The luminosity class of NGC 2008 is III with an apparent magnitude of 13.2.
NGC 2935 is a large intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 2,601 ± 23 km/s, which corresponds to a Hubble distance of 38.4 ± 2.7 Mpc. NGC 2935 was discovered by German-British astronomer William Herschel in 1786.
NGC 3290 is a large and relatively distant intermediate spiral galaxy located in the constellation Hydra. Its speed relative to the cosmic microwave background is 10,937 ± 27 km/s, which corresponds to a Hubble distance of 161 ± 11 Mpc. NGC 3290 was discovered by American astronomer Francis Leavenworth in 1886.
NGC 5885 is an intermediate barred spiral galaxy located in the constellation Libra. Its speed relative to the cosmic microwave background is 2,185 ± 13 km/s, which corresponds to a Hubble distance of 32.3 ± 2.3 Mpc. NGC 5885 was discovered by German-British astronomer William Herschel in 1784.
NGC 4017 is an intermediate spiral radio galaxy located in the constellation Coma Berenices. Its speed relative to the cosmic microwave background is 3,748 ± 21 km/s, which corresponds to a Hubble distance of 55.3 ± 3.9 Mpc. NGC 4017 was discovered by German-British astronomer William Herschel in 1785.
NGC 5461 is an emission nebula located in Messier 101 towards the constellation Ursa Major. Eight other regions of Messier 101 are listed in the New General Catalogue, namely NGC 5447, NGC 5449, NGC 5450, NGC 5451, NGC 5453, NGC 5458, NGC 5461 and NGC 5462. Three of these regions were discovered by William Herschel and the other six by Bindon Stoney.
NGC 5504 is an intermediate barred spiral galaxy located in the constellation Boötes. Its speed relative to the cosmic microwave background is 5,482 ± 17 km/s, which corresponds to a Hubble distance of 80.9 ± 5.7 Mpc. NGC 5504 was discovered by French astronomer Édouard Stephan in 1880.
NGC 1175, also known as the Peanut Galaxy, is a large lenticular galaxy located in the constellation Perseus. Its speed relative to the cosmic microwave background is 5,349 ± 19 km/s, which corresponds to a Hubble distance of 78.9 ± 5.5 Mpc. It was discovered by the German-British astronomer William Herschel in 1786.
NGC 5416 is a spiral galaxy and radio galaxy located in the constellation Boötes. Its speed relative to the cosmic microwave background is 6,499 ± 18 km/s, which corresponds to a Hubble distance of 95.9 ± 6.7 Mpc. NGC 5416 was discovered by German-British astronomer William Herschel in 1784.
NGC 1701, also known as the Trekkie Galaxy, is a large spiral galaxy located in the constellation Caelum. Its speed relative to the cosmic microwave background is 5,836 ± 24 km/s, which corresponds to a Hubble distance of 86.1 ± 6.0 Mpc. It was discovered by the British astronomer John Herschel in 1834.
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