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Nhóm_Địa_phương
| Spiral galaxies | |||
|---|---|---|---|
| Tên | Loại | Chòm sao | Ghi chú |
| Thiên Hà Tiên Nữ (M31, NGC 224) | SA(s)b | Andromeda | Thiên Hà lớn nhất trong nhóm, nặng ước chừng 125% trọng lượng của Ngân Hà. Đường kính: 220.000 năm ánh sáng, trọng lượng: (1.15±0.35)×1012 lần khối lượng Mặt Trời, số sao: 1 nghìn tỷ |
| Ngân Hà | SBbc | Sagittarius (centre) | Đường kính: 175±25 nghìn năm ánh sáng, trọng lượng: (1.3±0.3)×1012 khối lượng Mặt Trời, số sao: (2.5±1.5)×1011.[5][6] |
| Triangulum Galaxy (M33, NGC 598) | SA(s)cd | Triangulum | Lớn thứ 3, only unbarred spiral galaxy and possible satellite of the Andromeda Galaxy. Triangulum Galaxy has mass of ~50 billion solar masses and is Home to ~60 billion stars. |
| Elliptical galaxies | |||
| Tên | Loại | Chòm sao | Ghi chú |
| M32 (NGC 221) | E2 | Andromeda | Vệ Tinh của Thiên Hà Tiên Nữ |
| Irregular galaxies | |||
| Tên | Loại | Chòm sao | Ghi chú |
| Wolf–Lundmark–Melotte (WLM, DDO 221) | Ir+ | Cetus | |
| 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 with mass of between 7.5 and 8 billion solar mass. |
| Canis Major Dwarf | Irr | Canis Major | Vệ Tinh của Ngân Hà |
| Pisces Dwarf (LGS3) | Irr | Pisces | satellite of the Triangulum Galaxy? |
| IC 1613 (UGC 668) | IAB(s)m V | Cetus | |
| Phoenix Dwarf | Irr | Phoenix | |
| Large Magellanic Cloud (LMC) | Irr/SB(s)m | Dorado | Fourth largest member of the group, satellite of Milky Way, mass between 10 and 85 billion solar masses. Recent finding puts it at 10% mass of Milky Way Galaxy.[7] |
| Leo A (Leo III) | IBm V | Leo | |
| Sextans B (UGC 5373) | Ir+IV-V | Sextans | |
| NGC 3109 | Ir+IV-V | Hydra | |
| Sextans A (UGCA 205) | Ir+V | Sextans | |
| 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[8] |
| Dwarf elliptical galaxies | |||
| Tên | Loại | Chòm sao | Ghi chú |
| 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 |
| SagDIG (Sagittarius Dwarf Irregular Galaxy) | IB(s)m V | Sagittarius | Most remote from barycenter member thought to be in the Local Group.[8] |
| NGC 6822 (Barnard's Galaxy) | IB(s)m IV-V | Sagittarius | |
| Pegasus Dwarf (Pegasus Dwarf Irregular, DDO 216) | Irr | Pegasus | |
| Dwarf spheroidal galaxies | |||
| Tên | Loại | Chòm sao | Ghi chú |
| Boötes I | dSph | Boötes | |
| Cetus Dwarf | dSph/E4 | Cetus | |
| Canes Venatici I Dwarf và Canes Venatici II Dwarf | dSph | Canes Venatici | |
| KKs 3 | dSph | ||
| 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 |
| Antlia Dwarf | dE3/dSph/Irr? | Antlia | |
| 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 và 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 |
| 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 |
| Eridanus II | dSph | Eridanus | probable satellite of the Milky Way |
| Grus | dSph | Grus | satellite of the Milky Way |
| Tucana II | dSph | Tucana | satellite of the Milky Way |
| Identification unclear | |||
| Tên | Loại | Chòm sao | Ghi chú |
| Virgo Stellar Stream | dSph (remnant)? | Virgo | In the process of merging with the Milky Way |
| Willman 1 | dSph or Globular Cluster | Ursa Major | 147,000 light-years away |
| UGCA 86 (0355+66) | Irr, dE or S0 | Camelopardalis | |
| UGCA 92 (EGB0427+63) | Irr or S0 | Camelopardalis | |
| Horologium | 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 | dSph or Globular Cluster | Indus | satellite of the Milky Way |
| Eridanus III | dSph or Globular Cluster | Eridanus | satellite of the Milky Way |
| Probable non-members | |||
| Tên | Loại | Chòm sao | notes |
| GR 8 (DDO 155) | Im V | Virgo | Distance 7.9 million light years[9] |
| IC 5152 | IAB(s)m IV | Indus | Distance 5.8 million light years, possibly an outlying member of the local group[10] |
| NGC 55 | SB(s)m | Sculptor | Distance 7.2 million light years[11] |
| NGC 404 | E0 or SA(s)0− | Andromeda | Distance 10 million light years[12] |
| 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).[13] |
| NGC 1569 | Irp+ III-IV | Camelopardalis | In IC 342 group of galaxies. Distance 11 million light years[14] |
| NGC 1560 (IC 2062) | Sd | Camelopardalis | Distance 8-12 million light years |
| Camelopardalis A | Irr | Camelopardalis | |
| Argo Dwarf | Irr | Carina | |
| ESO 347-8 (2318–42) | Irr | Grus | |
| UKS 2323-326 | Irr | Sculptor | |
| UGC 9128 (DDO 187) | Irp+ | Boötes | |
| Objects in the Local Group no longer recognised as galaxies | |||
| Tên | Loại | Chòm sao | Ghi chú |
| Palomar 12 (Capricornus Dwarf) | Capricornus | a globular cluster formerly classified as a dwarf spheroidal galaxy | |
| Palomar 4 (Ursa Major Dwarf) | Ursa Major | a globular cluster formerly classified as a dwarf spheroidal galaxy | |
| Palomar 3 (Sextans C) | Sculptor | a globular cluster formerly classified as a dwarf spheroidal galaxy[15] |
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