نام | نوع | صورت فلکی | اطلاعات |
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Spiral galaxies |
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Andromeda Galaxy (M31, NGC 224) | SA(s)b | Andromeda | Largest galaxy in the group[۲] Diameter (D25 isophote): 152,000 light-yearsMass: ۷۰۱۲۱۵۰۰۰۰۰۰۰۰۰۰۰۰۰♠(۱٫۵±۰٫۵)×۱۰۱۲ M&#x۲۶۰۹;Number of stars: ca. ۷۰۱۲۱۰۰۰۰۰۰۰۰۰۰۰۰۰۰♠۱۰۱۲. |
Milky Way Galaxy | SBbc | Sagittarius (centre) | Second largest galaxy in the group, which may or may not be the most massive galaxy of the group.[۳] Diameter (D25 isophote): 87,400 light-yearsMass: ۷۰۱۲۱۵۴۰۰۰۰۰۰۰۰۰۰۰۰♠(۱٫۵۴±۰٫۱)×۱۰۱۲ M&#x۲۶۰۹;Number of stars: ۷۰۱۱۲۵۰۰۰۰۰۰۰۰۰۰۰۰۰♠(۲٫۵±۱٫۵)×۱۰۱۱. |
Triangulum Galaxy (M33, NGC 598) | SA(s)cd | Triangulum | Third largest, only unbarred spiral galaxy and possible satellite of the Andromeda Galaxy. Diameter (D25 isophote): 60,000 light-yearsMass: ۷۰۱۰۵۰۰۰۰۰۰۰۰۰۰۰۰۰۰♠۵×۱۰۱۰ M&#x۲۶۰۹;Number of stars: ۷۰۱۰۴۰۰۰۰۰۰۰۰۰۰۰۰۰۰♠۴×۱۰۱۰. |
Magellanic spiral galaxies |
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Large Magellanic Cloud (LMC) | Irr/SB(s)m | Dorado | Fourth largest member of the group, satellite of Milky Way and only Magellanic Spiral Galaxy in the local group Mass: ۷۰۱۰۱۰۰۰۰۰۰۰۰۰۰۰۰۰۰♠۱×۱۰۱۰ M&#x۲۶۰۹;Diameter (D25 isophote): 32,200 light-years |
NGC 3109 | SB(s)m | Hydra | Member of Antlia-Sextans Group |
Elliptical galaxies |
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M32 (NGC 221) | E2 | Andromeda | Satellite of the Andromeda Galaxy, shows signs of a supermassive black hole |
Irregular galaxies |
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Wolf–Lundmark–Melotte (WLM, DDO 221) | Ir+ | Cetus | Possible size between Small Magellanic Cloud and Large Magellanic Cloud |
IC 10 | KBm or Ir+ | Cassiopeia | |
Small Magellanic Cloud (SMC, NGC 292) | SB(s)m pec | Tucana | Satellite of Milky Way, 6th largest galaxy in the local group mass: 7 × 109 M☉ |
Pisces Dwarf (LGS3) | Irr | Pisces | Possible satellite of the Triangulum Galaxy |
IC 1613 (UGC 668) | IAB(s)m V | Cetus | |
Phoenix Dwarf | Irr | Phoenix | |
Leo A (Leo III) | IBm V | Leo | |
Aquarius Dwarf (DDO 210) | IB(s)m | Aquarius | Distance 3.2 million light years. Quite isolated in space, membership to Local Group established in 1999.[۴] |
SagDIG (Sagittarius Dwarf Irregular Galaxy) | IB(s)m V | Sagittarius | Most remote from barycenter member thought to be in the Local Group.[۴] |
NGC 6822 (Barnard's Galaxy) | IB(s)m IV-V | Sagittarius | |
Pegasus Dwarf (Pegasus Dwarf Irregular, DDO 216) | Irr | Pegasus | |
UGC 4879 (VV124) | IAm | Ursa Major | One of the most isolated galaxies in Local Group. Situated at the edge of the Local Group. |
Sextans A (UGCA 205) | Ir+V | Sextans | Member of Antlia-Sextans Group |
Sextans B (UGC 5373) | Ir+IV-V | Sextans | Member of Antlia-Sextans Group |
Leo P | Irr | Leo | Member of Antlia-Sextans Group, extraordinarily low metallicity (Z = 0.03ZMW) |
AGC 198606 | Irr? | Leo | Gas-rich ultra-faint dwarf galaxy |
AGC 215417 | Irr? | Leo | Gas-rich ultra-faint dwarf galaxy |
AGC 219656 | Irr? | Leo | Gas-rich ultra-faint dwarf galaxy |
AGC 249525 | Irr? | Boötes | Gas-rich ultra-faint dwarf galaxy, Situated at the edge of the Local Group |
AGC 268069 | Irr? | Serpens | Gas-rich ultra-faint dwarf galaxy |
Dwarf elliptical galaxies |
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M110 (NGC 205) | dE6p | Andromeda | Satellite of the Andromeda Galaxy and 5th largest galaxy with the mass of 9.3 billion solar masses. |
NGC 147 (DDO 3) | dE5 pec | Cassiopeia | Satellite of the Andromeda Galaxy |
Dwarf spheroidal galaxies |
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Boötes I | dSph | Boötes | |
Cetus Dwarf | dSph/E4 | Cetus | |
Canes Venatici I Dwarf and Canes Venatici II Dwarf | dSph | Canes Venatici | Satellites of the Milky Way[۵][۶] |
Andromeda III | dE2 | Andromeda | Satellite of the Andromeda Galaxy |
NGC 185 | dE3 pec | Cassiopeia | Satellite of the Andromeda Galaxy |
Andromeda I | dE3 pec | Andromeda | Satellite of the Andromeda Galaxy |
Sculptor Dwarf (E351-G30) | dE3 | Sculptor | Satellite of Milky Way |
Andromeda V | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda II | dE0 | Andromeda | Satellite of the Andromeda Galaxy |
Fornax Dwarf (E356-G04) | dSph/E2 | Fornax | Satellite of Milky Way |
Carina Dwarf (E206-G220) | dE3 | Carina | Satellite of Milky Way |
Leo I (DDO 74) | dE3 | Leo | Satellite of Milky Way |
Sextans Dwarf | dE3 | Sextans | Satellite of Milky Way |
Leo II (Leo B) | dE0 pec | Leo | Satellite of Milky Way |
Ursa Minor Dwarf | dE4 | Ursa Minor | Satellite of Milky Way |
Draco Dwarf (DDO 208) | dE0 pec | Draco | Satellite of Milky Way |
SagDSG (Sagittarius Dwarf Spheroidal Galaxy) | dSph/E7 | Sagittarius | Satellite of Milky Way |
Tucana Dwarf | dE5 | Tucana | |
Cassiopeia Dwarf (Andromeda VII) | dSph | Cassiopeia | Satellite of the Andromeda Galaxy |
Pegasus Dwarf Spheroidal Galaxy (Andromeda VI) | dSph | Pegasus | Satellite of the Andromeda Galaxy |
Ursa Major I Dwarf and Ursa Major II Dwarf | dSph | Ursa Major | Satellite of Milky Way |
Leo IV | dSph | Leo | Satellite of the Milky Way |
Leo V | dSph | Leo | Satellite of the Milky Way |
Leo T | dSph/Irr | Leo | Satellite of the Milky Way |
Boötes II | dSph | Boötes | Satellite of the Milky Way |
Boötes III | dSph | Boötes | Satellite of the Milky Way |
Boötes IV | dSph | Boötes | Satellite of the Milky Way |
Coma Berenices | dSph | Coma Berenices | Satellite of the Milky Way |
Segue 2 | dSph | Aries | Satellite of the Milky Way |
Hercules | dSph | Hercules | Satellite of the Milky Way |
Pisces II | dSph | Pisces | Satellite of the Milky Way |
Reticulum II | dSph | Reticulum | Satellite of the Milky Way |
Reticulum III | dSph | Reticulum | Satellite of the Milky Way |
Eridanus II | dSph | Eridanus | Probable satellite of the Milky Way |
Grus I | dSph | Grus | Satellite of the Milky Way |
Grus II | dSph | Grus | Satellite of the Milky Way |
Tucana II | dSph | Tucana | Satellite of the Milky Way |
Hydrus I | dSph | Hydrus | Satellite of the Milky Way |
Draco II | dSph | Draco | Satellite of the Milky Way |
Carina III | dSph | Carina | Satellite of the Milky Way |
Triangulum II (Laevens 2) | dSph | Triangulum | Satellite of the Milky Way |
Carina II | dSph | Carina | Satellite of the Milky Way |
Pictor II | dSph | Pictor | Satellite of the Milky Way |
Horologium II | dSph | Horologium | Satellite of the Milky Way |
Virgo I | dSph | Virgo | Satellite of the Milky Way |
Aquarius II | dSph | Aquarius | Satellite of the Milky Way |
Crater II | dSph | Crater | Satellite of the Milky Way |
Hydra II | dSph | Hydra | Satellite of the Milky Way |
Antlia II | dSph | Antlia | Satellite of the Milky Way |
Pegasus III | dSph | Pegasus | Satellite of the Milky Way |
Pegasus IV | dSph | Pegasus | Satellite of the Milky Way[۷] |
Pegasus W | dSph | Pegasus | Recent star formation, could still be starforming |
Cetus III | dSph | Cetus | Satellite of the Milky Way |
Tucana B | dSph | Tucana | [۸] |
Perseus I Dwarf Galaxy (Andromeda XXXIII) | dE | Perseus | Satellite of Andromeda |
Antlia Dwarf | dE3/dSph/Irr? | Antlia | Member of Antlia-Sextans Group |
Andromeda IX | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda X | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XI | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XII | dSph | Andromeda | Possible satellite of the Andromeda Galaxy |
Andromeda XIII (Pisces III) | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XIV (Pisces IV) | dSph | Pisces | Possible satellite of the Andromeda Galaxy |
Andromeda XV | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XVII | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XIX | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XX | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXI | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXII | dSph | Pisces | Possible satellite of the Triangulum Galaxy |
Andromeda XXIII | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXIV | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXV | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXVI | dSph | Andromeda | Satellite of the Andromeda Galaxy |
Andromeda XXVII | dSph | Andromeda | Satellite of the Andromeda Galaxy, tidally disrupted[۹] |
Andromeda XXIX | dSph | Pegasus | Satellite of the Andromeda Galaxy |
Andromeda XXX (Cassiopeia II) | dSph? | Cassiopeia | Satellite of the Andromeda Galaxy |
Andromeda XXXI (Lacerta I) | dSph? | Lacerta | Satellite of the Andromeda Galaxy |
Andromeda XXXII (Cassiopeia III) | dSph? | Cassiopeia | Satellite of the Andromeda Galaxy |
Andromeda XXXIV (Pegasus V) | dSph | Pegasus | Satellite of the Andromeda Galaxy[۱۰] |
Andromeda XVI (Pisces V) | dSph | Pisces | Possible satellite of the Andromeda Galaxy |
Andromeda XXVIII | dSph? | Pegasus | Possible satellite of the Andromeda Galaxy |
Andromeda XXXIII (Perseus I) | dSph? | Perseus | Possible satellite of the Andromeda Galaxy |
Andromeda XVIII | dSph | Andromeda | |
Centaurus I | dSph | Centaurus | Satellite of the Milky Way[۱۱] |
Pisces VII (Triangulum III) | dSph? | Pisces | Candidate, possible satellite of the Triangulum Galaxy[۱۲] |
Identification unclear |
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Virgo Stellar Stream | dSph (remnant)? | Virgo | In the process of merging with the Milky Way |
Canis Major Dwarf | Irr? | Canis Major | Possibly a dwarf galaxy in the process of merging with the Milky Way |
Hydra 1 | | Hydra | Possibly a dwarf galaxy in the process of merging with the Milky Way |
Tucana III | dSph or cluster? | Tucana | Satellite of the Milky Way, tidally disrupting |
Tucana IV | dSph or cluster? | Tucana | Satellite of the Milky Way |
Tucana V | dSph or cluster? | Tucana | Possibly non-existent |
Columba I | dSph or cluster? | Columba | Satellite of the Milky Way |
Segue 1 | dSph or Globular Cluster | Leo | Satellite of the Milky Way |
Cetus II | | Cetus | Likely part of Sagittarius tidal stream |
Willman 1 | dSph or Globular Cluster | Ursa Major | 147,000 light-years away |
Horologium I | dSph or Globular Cluster | Horologium | Satellite of the Milky Way. Not to be confused with the Horologium Supercluster. |
Pictoris | dSph or Globular Cluster | Pictor | Satellite of the Milky Way |
Phoenix II | dSph or Globular Cluster | Phoenix | Satellite of the Milky Way |
Indus I (Kim 2) | dSph or Globular Cluster | Indus | Satellite of the Milky Way |
Eridanus III | dSph or Globular Cluster | Eridanus | Satellite of the Milky Way or SMC[۱۳] |
Sagittarius II | dSph or Globular Cluster | Sagittarius | Satellite of the Milky Way |
Andromeda VIII | dSph? | Andromeda | Satellite of the Andromeda Galaxy, tidally disrupting |
Antlia B | | Antlia | Member of Antlia-Sextans Group |
Probable non-members |
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Andromeda IV | Irr | Andromeda | Once considered to be associated with M31. Its distance is now known to be 22 to 24 million light years (not close to the Andromeda Galaxy at all).[۱۴] |
GR 8 (DDO 155) | Im V | Virgo | Distance 7.9 million light years[۱۵] |
IC 5152 | IAB(s)m IV | Indus | Distance 5.8 million light years, possibly an outlying member of the local group[۱۶] |
NGC 300 | SA(s)d | Sculptor | Distance 6.07 million light years |
NGC 55 | SB(s)m | Sculptor | Distance 6.5 million light years[۱۷] |
NGC 404 | E0 or SA(s)0− | Andromeda | Distance 10 million light years[۱۸] |
NGC 1569 | Irp+ III-IV | Camelopardalis | In IC 342 group of galaxies. Distance 11 million light years[۱۹] |
NGC 1560 (IC 2062) | Sd | Camelopardalis | Distance 8-12 million light years |
Camelopardalis A | Irr | Camelopardalis | Distance 12 million light years[۱۷] |
Argo Dwarf | Irr | Carina | |
ESO 347-8 (2318–42) | Irr | Grus | |
UKS 2323-326 (ESO 407-18) | Irr | Sculptor | Distance 7.2 million light-years[۱۷] |
UGC 9128 (DDO 187) | Irp+ | Boötes | |
KKs 3 | dSph | Hydrus | |
Objects in the Local Group no longer recognised as galaxies |
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Palomar 12 (Capricornus Dwarf) | | Capricornus | Globular cluster formerly classified as a dwarf spheroidal galaxy |
Palomar 4 (Ursa Major Dwarf) | | Ursa Major | Globular cluster formerly classified as a dwarf spheroidal galaxy |
Palomar 5 (Serpens Dwarf) | | Serpens | Globular cluster formerly classified as a dwarf spheroidal galaxy |
Palomar 3 (Sextans C) | | Sculptor | Globular cluster formerly classified as a dwarf spheroidal galaxy[۲۰] |
Segue 3 | | Pegasus | Globular cluster formerly classified as a dwarf spheroidal galaxy[۲۱] |
Laevens 1 (Crater Dwarf) | | Crater | Globular cluster formerly classified as a dwarf spheroidal galaxy[۲۲] |
DES J2038-4609 (Indus II) | | Indus | Likely a chance alignment of stars[۲۳] |