# List of nearest known black holes

This is a list of known black holes that are close to the Solar System.
It is thought that most black holes are solitary, but black holes in binary or larger systems are much easier to detect. Solitary black holes can generally only be detected by measuring their gravitational distortion of the light from more distant objects. As of February 2022, only one isolated black hole has been confirmed, OGLE-2011-BLG-0462, around 5,200 light-years away.
The nearest known black hole is Gaia BH1, which was discovered in September 2022 by a team led by Kareem El-Badry. Gaia BH1 is 1,560 light-years away from Earth in the direction of the constellation Ophiuchus.
For comparison, the nearest star to the Sun (Proxima Centauri) is about 4.24 light-years away, and the Milky Way galaxy is approximately 100,000 light-years in diameter.

## List

| Distance | Distance | System | System | System | System | System | Component | Component | Component | Notes and additional references |
| (ly) | (kpc) | Designation | Description | Right ascension (Epoch J2000.0) | Declination (Epoch J2000.0) | Disco­very date | Desig­nation | Stel­lar class | Mass (M☉) | Notes and additional references |
| 1,560±10 | 0.478±0.005 | Gaia BH1 (TIC 125470397) | Binary system with orbit t=185.63 d and eccentricity e=0.45 | 17$^h$ 28$^m$ 41.09$^s$ | −00° 34′ 51.93″ | 2022 | A | BH | 9.78 | |
| 1,560±10 | 0.478±0.005 | Gaia BH1 (TIC 125470397) | Binary system with orbit t=185.63 d and eccentricity e=0.45 | 17$^h$ 28$^m$ 41.09$^s$ | −00° 34′ 51.93″ | 2022 | B | G | 0.93 | |
| 1,840±30 | 0.5906±0.0058 | Gaia BH3 (Gaia DR3 4318465066420528000) | Binary system with orbit t=11.6 yr and eccentricity e=0.7291 | 19$^h$ 39$^m$ 18.72$^s$ | +14° 55′ 54.2″ | 2024 | A | BH | 32.70±0.82 | |
| 1,840±30 | 0.5906±0.0058 | Gaia BH3 (Gaia DR3 4318465066420528000) | Binary system with orbit t=11.6 yr and eccentricity e=0.7291 | 19$^h$ 39$^m$ 18.72$^s$ | +14° 55′ 54.2″ | 2024 | B | G | 0.76±0.05 | |
| 3,800±80 | 1.16±0.02 | Gaia BH2 (Gaia DR3 5870569352746779008) | Binary system with orbit t=1276.7 d and eccentricity e=0.518 | 13$^h$ 50$^m$ 16.728$^s$ | −59° 14′ 20.42″ | 2023 | A | BH | 8.93 | |
| 3,800±80 | 1.16±0.02 | Gaia BH2 (Gaia DR3 5870569352746779008) | Binary system with orbit t=1276.7 d and eccentricity e=0.518 | 13$^h$ 50$^m$ 16.728$^s$ | −59° 14′ 20.42″ | 2023 | B | K III | 1.07 | |
| 3,800+2,700 −2,000 | 1.18+0.82 −0.63 | Gaia18ajz | Candidate for isolated black hole detected by microlensing | 18$^h$ 30$^m$ 14.460$^s$ | −08° 13′ 12.756″ | 2024 | | BH | 12.0+14.9 −5.4 | Most probable solution parameters shown. Another solution has a mass of 5.6 MSol. |
| 4,700±800 | 1.44±0.25 | A0620-00 (V616 Mon) | Binary star system with orbit t=7.75 h | 06$^h$ 22$^m$ 44.503$^s$ | −00° 20′ 44.72″ | 1986 | A | BH | 11.0±1.9 | Low-mass X-ray binary |
| 4,700±800 | 1.44±0.25 | A0620-00 (V616 Mon) | Binary star system with orbit t=7.75 h | 06$^h$ 22$^m$ 44.503$^s$ | −00° 20′ 44.72″ | 1986 | B | K | 0.5±0.3 | |
| 5,150±590 | 1.58±0.18 | MOA-2011-BLG-191 or OGLE-2011-BLG-0462 | Isolated black hole detected by microlensing | 17$^h$ 51$^m$ 40.2082$^s$ | −29° 53′ 26.50″ | 2022 | | BH | 7.1±1.3 | First confirmed black hole detected via microlensing |
| 5,400+6,900 −1,900 | 1.7±1.4 | GRS 1124-683 (GU Muscae) | Binary star system with orbit t=10.38 h | 11$^h$ 26$^m$ 26.60$^s$ | −68° 40′ 32.3″ | 1991 Jan 20 | A | BH | 6.95±1.1 | |
| 5,400+6,900 −1,900 | 1.7±1.4 | GRS 1124-683 (GU Muscae) | Binary star system with orbit t=10.38 h | 11$^h$ 26$^m$ 26.60$^s$ | −68° 40′ 32.3″ | 1991 Jan 20 | B | K | 0.9±0.3 | |
| 5,720±300 | 1.7±0.1 | XTE J1118+480 | | 11$^h$ 18$^m$ 11$^s$ | 48° 02′ 13″ | 2000 | A | BH | 6–6.5 | |
| 5,720±300 | 1.7±0.1 | XTE J1118+480 | | 11$^h$ 18$^m$ 11$^s$ | 48° 02′ 13″ | 2000 | B | M | 0.2 | |
| 7,300±200 | 2.25±0.08 | Cygnus X-1 (Cyg X-1) | Binary star system with orbit t=5.6 d | 19$^h$ 58$^m$ 21.676$^s$ | +35° 12′ 05.78″ | 1971 April–May | Cyg X-1 | BH | 15±1 | The first X-ray source widely accepted to be a black hole. |
| 7,300±200 | 2.25±0.08 | Cygnus X-1 (Cyg X-1) | Binary star system with orbit t=5.6 d | 19$^h$ 58$^m$ 21.676$^s$ | +35° 12′ 05.78″ | 1971 April–May | HDE 226868 | O | 30±10 | |
| 7,800±460 | 2.39±0.14 | V404 Cygni | Binary star system with orbit t=6.5 d | 20$^h$ 24$^m$ 03.83$^s$ | +33° 52′ 02.2″ | 1989 May 22 | A | BH | 9 | First black hole to have an accurate parallax measurement of its distance from our solar system |
| 7,800±460 | 2.39±0.14 | V404 Cygni | Binary star system with orbit t=6.5 d | 20$^h$ 24$^m$ 03.83$^s$ | +33° 52′ 02.2″ | 1989 May 22 | B | K | 0.7 | Early K giant star |
| 8,100±1,000 | 2.49±0.30 | GRO J0422+32 | Binary star system with orbit t=5.09 h | 04$^h$ 21$^m$ 42.723$^s$ | +32° 54′ 26.94″ | 1992 Aug 5 | A | BH | 3.97±0.95 | |
| 8,100±1,000 | 2.49±0.30 | GRO J0422+32 | Binary star system with orbit t=5.09 h | 04$^h$ 21$^m$ 42.723$^s$ | +32° 54′ 26.94″ | 1992 Aug 5 | B | M1 | 0.5±0.1 | |
| 8,150 | 2.5 | MACHO-96-BLG-5 | Candidate isolated black hole detected by microlensing | 18$^h$ 05$^m$ 2.50$^s$ | −27° 42′ 17″ | 2001 | | BH | 5.30+1.14 −0.96 | Very strong candidate, parameters listed are of best fit |
| 8,800±2,300 | 2.7±0.7 | GS 2000+25 | | 20$^h$ 02$^m$ 50$^s$ | +25° 14′ 11″ | 1988 | A | BH | 7.5 | |
| 8,800±2,300 | 2.7±0.7 | GS 2000+25 | | 20$^h$ 02$^m$ 50$^s$ | +25° 14′ 11″ | 1988 | B | M | 0.5 | |
| 9,260+6,330 −5,450 | 2.84+1.94 −1.67 | Gaia18cbf | Candidate isolated mass-gap black hole detected by microlensing | 16$^h$ 04$^m$ 38.862$^s$ | −41° 06′ 17.32″ | 2022 | | BH | 2.65+5.09 −1.48 | Best fit. Second-best fit has a mass of 1.71 MSol, which would make it a neutron star. |
| 11,000±980 | 3.4±0.3 | Swift J1727.8−1613 | Detected via a transient X-ray event | 17$^h$ 27$^m$ 46.0$^s$ | −16° 12′ 5.3″ | 2023 | A | BH | 3.12±0.10 | |
| 11,000±980 | 3.4±0.3 | Swift J1727.8−1613 | Detected via a transient X-ray event | 17$^h$ 27$^m$ 46.0$^s$ | −16° 12′ 5.3″ | 2023 | B | K4V | <0.78 | |
| 11,100±700 | 3.4±0.2 | Cygnus X-3 | Binary star system with orbit t=4.8 h | 20$^h$ 32$^m$ 25.766$^s$ | +40° 57′ 28.26″ | 1967 | Cyg X-3 | BH | 2.4+2.1 −1.1 | |
| 11,100±700 | 3.4±0.2 | Cygnus X-3 | Binary star system with orbit t=4.8 h | 20$^h$ 32$^m$ 25.766$^s$ | +40° 57′ 28.26″ | 1967 | V1521 Cyg | WN | 10.3+3.9 −2.8 | |
| 11,400 | 3.5 | MACHO-98-BLG-6 | Candidate isolated mass-gap black hole detected by microlensing | 17$^h$ 57$^m$ 32.80$^s$ | −28° 42′ 45″ | 2001 | | BH | 3.17+0.52 −0.48 | Very strong candidate, parameters listed are of best fit |
| 11,900±3,600 | 3.7±1.1 | GRO J1655-40 | Binary star system with orbit t = 2.6 d | 16$^h$ 54$^m$ 00.137$^s$ | −39° 50′ 44.90″ | 1994 | A | BH | 5.31±0.07 | |
| 11,900±3,600 | 3.7±1.1 | GRO J1655-40 | Binary star system with orbit t = 2.6 d | 16$^h$ 54$^m$ 00.137$^s$ | −39° 50′ 44.90″ | 1994 | V1033 Sco | F5IV | 1.9±0.3 | |
| 15,700 | 4.8 | MACHO-99-BLG-22 | Candidate isolated black hole detected by microlensing | 18$^h$ 05$^m$ 05.28$^s$ | −28° 34′ 41.70″ | 2002 | | BH | 7.5 | Very strong candidate |
| 25,600±600 | 7.86±0.2 | Sagittarius A* | Supermassive black hole | 17$^h$ 45$^m$ 40.0409$^s$ | −29° 0′ 28.118″ | 1974 | | BH | 4,154,000 ± 14,000 | Center of the Galaxy |
| 29,700±2,700 | 9.1±0.8 | 4U 1543-475 | Binary star system with orbit t = 26.8 h | 15$^h$ 47$^m$ 08.277$^s$ | −47° 40′ 10.28″ | 1971 | A | BH | 9.4±2.0 | |
| 29,700±2,700 | 9.1±0.8 | 4U 1543-475 | Binary star system with orbit t = 26.8 h | 15$^h$ 47$^m$ 08.277$^s$ | −47° 40′ 10.28″ | 1971 | B | A2V | 2.7±1.0 | |

## Nearest black hole record holders

This is a succession of black holes that have been known as the nearest black hole.
Nearest black hole titleholders :
| Date | Distance | Name | Mass | Type | Notes |
| 2022— | 1,600 ly (1.5×10$^{16}$ km; 9.4×10$^{15}$ mi) | Gaia BH1 | 9.62 solar masses (1.913×10$^{31}$ kg; 4.22×10$^{31}$ lb) | Main-sequence star with dormant compact mass binary | First dormant black hole discovered, first Sun-like star in black hole binary system discovered: First detected via positional shifts of visible companion |
| 1986—2022 | 3,000 ly (2.8×10$^{16}$ km; 1.8×10$^{16}$ mi) | V616 Monocerotis (A0620−00) | 5.86 M$_☉$ (1.165×10$^{31}$ kg; 2.57×10$^{31}$ lb) | Visible variable star X-ray binary system | First observed in X-rays |
| 1975—1986 | 6,070 ly (5.74×10$^{16}$ km; 3.57×10$^{16}$ mi) | Cygnus X-1 | 14.8 M$_☉$ (2.94×10$^{31}$ kg; 6.5×10$^{31}$ lb) | X-ray binary system | First black hole discovered: first observed in 1964 in X-rays, first speculated as black hole in 1972, first confirmed black hole in 1975, accepted as a black hole by 1990 |