NGC_1664 References

NGC 1664
NGC 1664
	NGC 1664
Observation data ( J2000 epoch)
Right ascension	04h 51m 06.(0)s
Declination	+43° 40′ 3(0)″
Distance	4,200 ± 150 ly (1,289 ± 47 pc)
Apparent magnitude (V)	7.6
Apparent dimensions (V)	18.0′
Physical characteristics
Mass	640 M☉
Other designations	C0447+436, Collinder 56, Lund 143, Melotte 27, OCL 411, Raab 19
Associations
Constellation	Auriga
	See also: Open cluster, List of open clusters

NGC 1664 is an open cluster in the constellation of Auriga. It contains stars with a total of around 640 solar masses with a tidal radius of 43 ly (13.2 pc).^[4]

NGC 1664 is a somewhat young cluster, with an age of 675 ± 50 Myr, and is dynamically relaxed.^[2] It is located some 4,200 light-years away, or about 1.3 kpc.^[2] Born outside of the solar circle, it orbits the center of the Milky Way every 244 million years.^[2]

References

^ ^a ^b Wu, Zhen-Yu; et al. (November 2009), "The orbits of open clusters in the Galaxy", Monthly Notices of the Royal Astronomical Society, 399 (4): 2146–2164, arXiv: 0909.3737, Bibcode: 2009MNRAS.399.2146W, doi: 10.1111/j.1365-2966.2009.15416.x, S2CID 6066790.
^ ^a ^b ^c ^d Koç, Seliz; Yontan, Talar; Bilir, Selçuk; Canbay, Remziye; Ak, Tansel; Banks, Timothy; Ak, Serap; Paunzen, Ernst (2022). "A Photometric and Astrometric Study of the Open Clusters NGC 1664 and NGC 6939". The Astronomical Journal. 163 (4): 191. arXiv: 2202.11126. Bibcode: 2022AJ....163..191K. doi: 10.3847/1538-3881/ac58a0. S2CID 247058424.
^ ^a ^b ^c O'Meara, Steve (2007), Herschel 400 Observing Guide, Cambridge University Press, p. 22, ISBN 978-0521858939.
^ ^a ^b Piskunov, A. E.; et al. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics, 477 (1): 165–172, Bibcode: 2008A&A...477..165P, doi: 10.1051/0004-6361:20078525.
^ Rabb, S. (1922), "Research on open clusters", Meddelanden Fran Lunds Astronomiska Observatorium Series II, 28: 3–48, Bibcode: 1922MeLuS..28....3R.

External links

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NGC 1664
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[MNRAS399_4_2146-1] Wu, Zhen-Yu; et al. (November 2009), "The orbits of open clusters in the Galaxy", Monthly Notices of the Royal Astronomical Society, 399 (4): 2146–2164, arXiv: 0909.3737, Bibcode: 2009MNRAS.399.2146W, doi: 10.1111/j.1365-2966.2009.15416.x, S2CID 6066790.

[Koc-2] Koç, Seliz; Yontan, Talar; Bilir, Selçuk; Canbay, Remziye; Ak, Tansel; Banks, Timothy; Ak, Serap; Paunzen, Ernst (2022). "A Photometric and Astrometric Study of the Open Clusters NGC 1664 and NGC 6939". The Astronomical Journal. 163 (4): 191. arXiv: 2202.11126. Bibcode: 2022AJ....163..191K. doi: 10.3847/1538-3881/ac58a0. S2CID 247058424.

[O'Meara_2007-3] O'Meara, Steve (2007), Herschel 400 Observing Guide, Cambridge University Press, p. 22, ISBN 978-0521858939.

[aa477_1_165-4] Piskunov, A. E.; et al. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics, 477 (1): 165–172, Bibcode: 2008A&A...477..165P, doi: 10.1051/0004-6361:20078525.

[Raab_1922-5] Rabb, S. (1922), "Research on open clusters", Meddelanden Fran Lunds Astronomiska Observatorium Series II, 28: 3–48, Bibcode: 1922MeLuS..28....3R.

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NGC 1664
NGC 1664
Observation data ( J2000 epoch)
Right ascension	04^h 51^m 06.(0)^s^[1]
Declination	+43° 40′ 3(0)″^[1]
Distance	4,200 ± 150 ly (1,289 ± 47 pc)^[2]
Apparent magnitude (V)	7.6^[3]
Apparent dimensions (V)	18.0′^[3]
Physical characteristics
Mass	640^[4] `M`_☉
Other designations	C0447+436, Collinder 56, Lund 143, Melotte 27, OCL 411, Raab 19 ^[5]
Associations
Constellation	Auriga^[3]
See also: Open cluster, List of open clusters