VVV CL001

VVVCL001
VVVCL001
	A image from the Vista Variables in the Via Lactea (VVV) survey showing VVV CL001 located inconspicuously to the left while UKS 1 is on the right
Observation data
Constellation	Sagittarius
Right ascension	17h 54m 37.17s
Declination	-24° 4' 51.34"
Distance	26,800 ly (8.22 kpc)
Physical characteristics
Estimated age	11.9 gya
Notable features	One of the most metal poor globular clusters
	See also: Globular cluster, List of globular clusters

VVV CL001 is a globular cluster located around 8.22 kiloparsecs from Earth in the constellation of Sagittarius.^[1] It is the most metal poor globular cluster discovered around the Milky Way. ^[2] It is an old globular cluster with an age of 11.9 billion years. VVV CL001 is likely an ancient relic that was left behind by a past galactic merger by a massive galaxy early in the evolution of the Milky Way galaxy.^[2] It has a mass of 1.5x10^5 solar masses.^[3]

It may be in a physical binary with another globular cluster known as UKS 1 however it is still being decided if they are an actual binary or have similar radial velocity.^[4]

^ information@eso.org. "VISTA view of the newly discovered globular cluster VVV CL001 and its brighter companion". www.eso.org (in French). Retrieved 2025-06-12.
^ ^a ^b Fernández-Trincado, José G.; Minniti, Dante; Souza, Stefano O.; Beers, Timothy C.; Geisler, Doug; Bidin, Christian Moni; Villanova, Sandro; Majewski, Steven R.; Barbuy, Beatriz; Pérez-Villegas, Angeles; Henao, Lady; Romero-Colmenares, María; Roman-Lopes, Alexandre; Lane, Richard R. (2021). "VVV CL001: Likely the Most Metal-poor Surviving Globular Cluster in the Inner Galaxy". The Astrophysical Journal Letters. 908 (2): L42. arXiv:2102.01088. Bibcode:2021ApJ...908L..42F. doi:10.3847/2041-8213/abdf47.
^ "VVV-CL001". people.smp.uq.edu.au. Retrieved 2025-06-12.
^ Minniti, D.; Hempel, M.; Toledo, I.; Ivanov, V. D.; Alonso-García, J.; Saito, R. K.; Catelan, M.; Geisler, D.; Jordán, A.; Borissova, J.; Zoccali, M.; Kurtev, R.; Carraro, G.; Barbuy, B.; Clariá, J. (2011-03-01). "Discovery of VVV CL001 - A low-mass globular cluster next to UKS 1 in the direction of the Galactic bulge". Astronomy & Astrophysics. 527: A81. arXiv:1012.2450. Bibcode:2011A&A...527A..81M. doi:10.1051/0004-6361/201015795. ISSN 0004-6361.

[1] rmation@eso.org. "VISTA view of the newly discovered globular cluster VVV CL001 and its brighter companion". www.eso.org (in French). Retrieved 2025-06-12.

[:0-2] Fernández-Trincado, José G.; Minniti, Dante; Souza, Stefano O.; Beers, Timothy C.; Geisler, Doug; Bidin, Christian Moni; Villanova, Sandro; Majewski, Steven R.; Barbuy, Beatriz; Pérez-Villegas, Angeles; Henao, Lady; Romero-Colmenares, María; Roman-Lopes, Alexandre; Lane, Richard R. (2021). "VVV CL001: Likely the Most Metal-poor Surviving Globular Cluster in the Inner Galaxy". The Astrophysical Journal Letters. 908 (2): L42. arXiv:2102.01088. Bibcode:2021ApJ...908L..42F. doi:10.3847/2041-8213/abdf47.

[3] "VVV-CL001". people.smp.uq.edu.au. Retrieved 2025-06-12.

[:1-4] Minniti, D.; Hempel, M.; Toledo, I.; Ivanov, V. D.; Alonso-García, J.; Saito, R. K.; Catelan, M.; Geisler, D.; Jordán, A.; Borissova, J.; Zoccali, M.; Kurtev, R.; Carraro, G.; Barbuy, B.; Clariá, J. (2011-03-01). "Discovery of VVV CL001 - A low-mass globular cluster next to UKS 1 in the direction of the Galactic bulge". Astronomy & Astrophysics. 527: A81. arXiv:1012.2450. Bibcode:2011A&A...527A..81M. doi:10.1051/0004-6361/201015795. ISSN 0004-6361.

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