Principal Galaxy Catalog (PGC) Objects 1500 to 1999 (original) (raw)

Page last updated July 29, 2021

PGC 1523 (= NGC 99)

PGC 1614 (= HCG 1C)
A magnitude 15.9(?) elliptical galaxy (type E1?) in Andromeda (RA 00 25 54.4, Dec +25 43 25)

Physical Information: Based on a recessional velocity of 10055 km/sec, a straightforward calculation indicates that PGC 1614 is about 470 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 450 million light years away at the time the light by which we see it was emitted, about 460 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.4 by 0.35 arcmin, the galaxy is about 50 thousand light years across. A member (1c) of Hickson Compact Group 1.

SDSS image of elliptical galaxy PGC 1614, also known as HCG 1c
Above, a 0.8 arcmin wide SDSS image of PGC 1614; for other images see HCG 1

PGC 1618 (= HCG 1D)
A magnitude 17.4(?) lenticular galaxy (type S0?) in Andromeda (RA 00 25 58.8, Dec +25 43 31)

Physical Information: Based on a recessional velocity of 10120 km/sec, a straightforward calculation indicates that PGC 1614 is about 470 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 455 million light years away at the time the light by which we see it was emitted, about 460 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.25 by 0.15 arcmin, the galaxy is about 30 thousand light years across. A member (1d) of Hickson Compact Group 1.

SDSS image of lenticular galaxy PGC 1618, also known as HCG 1d
Above, a 0.6 arcmin wide SDSS image of PGC 1618; for other images see HCG 1

PGC 1625 (= HCG 1B)
A magnitude 15.5(?) lenticular galaxy (type S0/a? pec) in Andromeda (RA 00 26 06.0, Dec +25 43 09)

Physical Information: Based on a recessional velocity of 10265 km/sec, a straightforward calculation indicates that PGC 1625 is about 480 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 460 million light years away at the time the light by which we see it was emitted, about 465 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.35 by 0.3 arcmin, the main galaxy is about 45 thousand light years across. However, it is part of a large interacting complex, including PGC 1627 and a fainter unnamed galaxy, that extends over an apparent size of 2.2 by 1.0 arcmin, or about 290 thousand light years. Also a member (1b) of Hickson Compact Group 1.

SDSS image of lenticular galaxy PGC 1625, also known as HCG 1b, also showing PGC 1627, also known as HCG 1a
Above, a ? arcmin wide SDSS image of PGC 1625, also showing PGC 1627
For other images see PGC 1627 and HCG 1

PGC 1627 (= HCG 1A)
A magnitude 15.0(?) spiral galaxy (type Sbc? pec) in Andromeda (RA 00 26 07.1, Dec +25 43 31)

Physical Information: Based on a recessional velocity of 10235 km/sec, a straightforward calculation indicates that PGC 1627 is about 475 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 460 million light years away at the time the light by which we see it was emitted, about 465 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.85 by 0.35 arcmin, the main galaxy is about 115 thousand light years across. Part of a large interacting complex, including PGC 1625 and a fainter unnamed galaxy, that extends over an apparent size of 2.2 by 1.0 arcmin, or about 290 thousand light years. Also a member (1a) of Hickson Compact Group 1.

SDSS image of spiral galaxy PGC 1627, also known as HCG 1a, also showing PGC 1625, also known as HCG 1b
Above, a 1.2 arcmin wide SDSS image of PGC 1627 and PGC 1625
Below, a 1.8 arcmin wide SDSS image of the complex structure formed by the interaction of the galaxies
SDSS image of spiral galaxy PGC 1627, also known as HCG 1a, also showing PGC 1625, also known as HCG 1b, and the complex structure formed by their interaction
For other images see HCG 1

PGC 1673 (= ESO 294-16)
A 14th-magnitude spiral galaxy (type (R')SB(rs)ab?) in Phoenix (RA 00 27 09.2, Dec -40 59 04)

Based on a recessional velocity of 7975 km/sec, PGC 1673 is about 370 million light years away. Given that and its apparent size of 1.05 by 0.55 arcmin, it is about 115 thousand light years across. Used by the de Vaucouleurs Atlas of Galaxy Types as an example of galaxy type (R1R2')SAB(rl)a.

DSS image of spiral galaxy PGC 1673, also known as ESO 294-16
Above, a 2.4 arcmin wide closeup of PGC 1673
Below, a 12 arcmin wide region centered on the galaxy
DSS image of region near spiral galaxy PGC 1673, also known as ESO 294-16

PGC 1730 (= IC 16)
A 15th-magnitude spiral galaxy (type S?) in Cetus (RA 00 28 07.7, Dec -13 05 39)

PGC 1753 (= IC 17)
A 15th-magnitude spiral galaxy (type Sbc?) in Cetus (RA 00 28 29.7, Dec +02 38 55)

PGC 1755 (= IC 20)
A 14th-magnitude lenticular galaxy (type S0?) in Cetus (RA 00 28 39.6, Dec -13 00 35)

PGC 1759 (= IC 18)
A 15th-magnitude spiral galaxy (type SBb pec) in Cetus (RA 00 28 35.0, Dec -11 35 11)

PGC 1762 (= IC 19)
A 14th-magnitude elliptical galaxy (type E3?) in Cetus (RA 00 28 39.4, Dec -11 38 25)

PGC 1785 (= IC 21)
A 15th-magnitude spiral galaxy (type S?) in Cetus (RA 00 29 10.4, Dec -00 09 49)

PGC 1815 (= IC 22)
A 14th-magnitude lenticular galaxy (type E/S0?) in Cetus (RA 00 29 33.1, Dec -09 04 49)

PGC 1852 (= CGCG 409-021 = MCG +01-02-015)
A magnitude 14,5(?) spiral galaxy (type SAB(rs)a?) in Pisces (RA 00 30 28.7, Dec +05 51 41)

A "void" galaxy, PGC 1852 is unusual in being practically the only thing within a vast region more than a hundred million light years across. Most galaxies are located in small groups, clusters, or rich clusters, scattered along filaments and bunched huge accumulations. Very few exist all by themselves in the vast loneliness of truly intergalactic space. Based on a recessional velocity relative to the Cosmic Microwave Background radiation of 6735 km/sec (and H0 = 70 km/sec/Mpc), PGC 1852 is about 310 to 315 million light years away. Given that and its apparent size of about 0.6 by 0.35 arcmin (from the images below), the galaxy is about 55 thousand light years across.

SDSS
Above, a 12 arcmin wide SDSS image centered on PGC 1852
Below, a 2 arcmin wide image of the galaxy
(Image Credit ESA/Hubble & NASA and N. Gorin (STScI), Acknowledgement Judy Schmidt)
HSTBelow, a 0.75 arcmin wide image of the galaxy (Image Credit as above)
HST image of spiral galaxy PGC 1852, sometimes called the loneliest galaxy because of its last of any neighbors

PGC 1872 (= IC 23)
A 14th-magnitude elliptical galaxy (type E0?) in Cetus (RA 00 30 50.7, Dec -12 43 11)

PGC 1905 (= IC 25)
A 14th-magnitude lenticular galaxy (type S0?) in Cetus (RA 00 31 12.2, Dec -00 24 27)

PGC 1914 (= HCG 2B)
A magnitude 14.5? spiral galaxy (type SB(s)ab? pec) in Pisces (RA 00 31 18.9, Dec +08 28 30)

Physical Information: Based on a recessional velocity of 4350 km/sec, PGC 1914 is about 200 million light years away. Given that and its apparent size of 0.65 by 0.45 arcmin, it is about 40 thousand light years across. It is a member of Hickson Compact Group 2.

SDSS image of spiral galaxy PGC 1914, also known as HCG 2b
Above, a 0.9 arcmin wide SDSS image of PGC 1914; for other images see HCG 2

PGC 1921 (= HCG 2A)
A magnitude 13.9? spiral galaxy (type SB(rs)d? pec) in Pisces (RA 00 31 23.9, Dec +08 28 00)

Physical Information: Based on a recessional velocity of 4365 km/sec, PGC 1921 is about 205 million light years away. Given that and its apparent size of 1.5 by 1.0 arcmin, it is about 90 thousand light years across. It is a member of Hickson Compact Group 2.

SDSS image of spiral galaxy PGC 1921, also known as HCG 2a
Above, a 1.6 arcmin wide SDSS image of PGC 1921; for other images see HCG 2

PGC 1927 (= HCG 2C)
A magnitude 15.0? spiral galaxy (type SB(rs)bc? pec) in Pisces (RA 00 31 29.4, Dec +08 24 02)

Physical Information: Based on a recessional velocity of 4270 km/sec, PGC 1927 is about 200 million light years away. Given that and its apparent size of 1.1 by 0.75 arcmin, it is about 65 thousand light years across. It is a member of Hickson Compact Group 2.

SDSS image of spiral galaxy PGC 1927, also known as HCG 2c
Above, a 1.4 arcmin wide SDSS image of PGC 1927; for other images see HCG 2

PGC 1934 (= HCG 2D)
A magnitude 16.7? spiral galaxy (type SBb?) in Pisces (RA 00 31 38.3, Dec +08 23 26)

Physical Information: Based on a recessional velocity of 21340 km/sec, a straightforward calculation indicates that PGC 1934 is about 995 million light years away. However, for objects at such distances we should take into account the expansion of the Universe during the time it took their light to reach us. Doing that shows that the galaxy was about 915 million light years away at the time the light by which we see it was emitted, about 945 million years ago (the difference between the two numbers being due to the expansion of the intervening space during the light-travel time). Given that and its apparent size of 0.75 by 0.55 arcmin, the galaxy is about 200 thousand light years across. Since PGC 1934 is much further away than any of the other members of Hickson Compact Group 2, it is not actually associated with the Group.

SDSS image of spiral galaxy PGC 1934, also known as HCG 2d
Above, a 0.9 arcmin wide SDSS image of PGC 1934; for other images see HCG 2

PGC 1941 (= NGC 145 = Arp 19)

PGC 1952 (= ESO 079-003)
A magnitude 13.0 spiral galaxy (type SABx0/a: spw / E(d)5) in Tucana (RA 00 32 02.1, Dec -64 15 12)

Note About Classification: The type is taken from the Spitzer Survey of Stellar Structure in Galaxies. The x after the A

B

indicates that there is a prominent X- or peanut-shaped structure in its inner regions; such features are only seen in edge-on galaxies, such as this one (as indicated by "spw", which refers to a warped spindle, or edge-on disk). The / E(d)5 means that (at least in infrared images) the spiral is embedded in a disklike elliptically shaped faint outer structure, and does not change the fact that this is a spiral galaxy.

DSS image of region near spiral galaxy PGC 1952
Above, a 12 arcmin wide DSS image centered on PGC 1952