# NGC 5460

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Open cluster in the constellation Centaurus

NGC 5460 Observation data (J2000 epoch) Right ascension 14h 07m 27s[1] Declination −48° 20′ 36″[1] Distance 2,350 ly (720 pc[2]) Apparent magnitude (V) 5.6 [1] Apparent dimensions (V) 23'[3] Physical characteristics Mass 505[4] M☉ Estimated age 160 million years[2] Other designations Collinder 280, Melotte 123 Associations Constellation Centaurus See also: Open cluster, List of open clusters

**NGC 5460** is an [open cluster](/source/Open_cluster) in the constellation [Centaurus](/source/Centaurus_(constellation)). It is a bright but loose cluster of intermediate age located approximately 2,300 light years away from Earth. It is located nearly 2 degrees east-southeast of [Zeta Centauri](/source/Zeta_Centauri).[5]

## Observation history

The location of NGC 5460

NGC 5460 was discovered by [James Dunlop](/source/James_Dunlop) in 1826. He described it on May 7, 1826 as "a curiously curved line of small stars, of nearly equal magnitudes; two stars of 7th magnitude to the east" and added it to his catalog as number 431. [John Herschel](/source/John_Herschel) described as "a region of large bright stars of 8, 9... etc. magnitude; a very coarse cluster" and added it to General Catalogue as No. 3555. In the [New General Catalogue](/source/New_General_Catalogue) it is described as "very large, very little concentrated, stars 8th magnitude and fainter".[5]

## Characteristics

NGC 5460 is a loose open cluster, of [Trumpler type II3m](/source/Robert_Julius_Trumpler#Trumpler_Classification_for_open_star_clusters). There are 272 probable member stars within the angular radius of the cluster and 96 within the central part of the cluster. The tidal radius of the cluster is 4.1 - 8.2 parsecs (13 - 26 light years) and represents the average outer limit of NGC 5460, beyond which a star is unlikely to remain gravitationally bound to the cluster core.[3]

A photometric study by Barrado and Byrne in 1995 studied 353 stars near the core of the cluster and identified 25 members and 27 possible members. They estimated the age of the cluster to be 110 mys and its distance to be 740 pc and identified three stars, members and possible members, as [variable](/source/Variable_star).[6] A spectrographic study of the cluster by Fossati et al. (2011) estimated the distance of the cluster to be 720 ± 50 pc, its age log t=8.2 ± 0.1 and the mean radial velocity −17.9 ± 5.2 km/s. The [metallicity](/source/Metallicity) of the cluster is slightly higher than the solar one (Z = 0.013).[2]

The brightest of the members is HD 123226 (mag. 8.98, B8),[6] which is also the hottest star of the cluster.[2] One more star, HD 122983, (mag. 9.77, B9.5IV/V) has been found to be variable, with period 3.4 days.[7] It is a [He-weak star](/source/Chemically_peculiar_star). Other chemically peculiar stars within the cluster are HD 123182 (He-weak star of an unclear type, mag. 9.88, spectral type B9), and UCAC 11105038 (mag. 11.59, A8). Also, the hotter component of the HD 123225 system may be an HgMn star.[2]

## References

1. ^ [***a***](#cite_ref-simbad_1-0) [***b***](#cite_ref-simbad_1-1) [***c***](#cite_ref-simbad_1-2) ["NGC 5460"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5460). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2015-06-19.

1. ^ [***a***](#cite_ref-Fossati_2-0) [***b***](#cite_ref-Fossati_2-1) [***c***](#cite_ref-Fossati_2-2) [***d***](#cite_ref-Fossati_2-3) [***e***](#cite_ref-Fossati_2-4) Fossati, L.; Folsom, C. P.; Bagnulo, S.; Grunhut, J. H.; Kochukhov, O.; Landstreet, J. D.; Paladini, C.; Wade, G. A. (11 May 2011). ["A detailed spectroscopic analysis of the open cluster NGC 5460"](https://doi.org/10.1111%2Fj.1365-2966.2011.18199.x). *Monthly Notices of the Royal Astronomical Society*. **413** (2): 1132–1144. [arXiv](/source/ArXiv_(identifier)):[1012.3050](https://arxiv.org/abs/1012.3050). [Bibcode](/source/Bibcode_(identifier)):[2011MNRAS.413.1132F](https://ui.adsabs.harvard.edu/abs/2011MNRAS.413.1132F). [doi](/source/Doi_(identifier)):[10.1111/j.1365-2966.2011.18199.x](https://doi.org/10.1111%2Fj.1365-2966.2011.18199.x). [S2CID](/source/S2CID_(identifier)) [118481509](https://api.semanticscholar.org/CorpusID:118481509).

1. ^ [***a***](#cite_ref-Kharchenko2013_3-0) [***b***](#cite_ref-Kharchenko2013_3-1) Kharchenko, N. V.; Piskunov, A. E.; Schilbach, E.; Röser, S.; Scholz, R.-D. (3 October 2013). ["Global survey of star clusters in the Milky Way"](https://web.archive.org/web/20200312135436/ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+A/558/A53/catalog.dat). *Astronomy & Astrophysics*. **558**: A53. [arXiv](/source/ArXiv_(identifier)):[1308.5822](https://arxiv.org/abs/1308.5822). [Bibcode](/source/Bibcode_(identifier)):[2013A&A...558A..53K](https://ui.adsabs.harvard.edu/abs/2013A&A...558A..53K). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201322302](https://doi.org/10.1051%2F0004-6361%2F201322302). [S2CID](/source/S2CID_(identifier)) [118548517](https://api.semanticscholar.org/CorpusID:118548517). Archived from [the original](ftp://cdsarc.u-strasbg.fr/pub/cats/J/A%2BA/558/A53/catalog.dat) on 2020-03-12.

1. **[^](#cite_ref-Piskunov2008_4-0)** Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (6 November 2007). ["Tidal radii and masses of open clusters"](https://web.archive.org/web/20200310213712/ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+A/477/165/table.dat). *Astronomy & Astrophysics*. **477** (1): 165–172. [Bibcode](/source/Bibcode_(identifier)):[2008A&A...477..165P](https://ui.adsabs.harvard.edu/abs/2008A&A...477..165P). [doi](/source/Doi_(identifier)):[10.1051/0004-6361:20078525](https://doi.org/10.1051%2F0004-6361%3A20078525). Archived from [the original](ftp://cdsarc.u-strasbg.fr/pub/cats/J/A%2BA/477/165/table.dat) on 2020-03-10.

1. ^ [***a***](#cite_ref-OMeara_5-0) [***b***](#cite_ref-OMeara_5-1) O'Meara, Stephen James (2013). [*Deep-Sky Companions: Southern Gems*](https://books.google.com/books?id=S5QIEKns33sC&pg=PA264). [Cambridge University Press](/source/Cambridge_University_Press). pp. 266–268. [Bibcode](/source/Bibcode_(identifier)):[2013dcsg.book.....O](https://ui.adsabs.harvard.edu/abs/2013dcsg.book.....O). [ISBN](/source/ISBN_(identifier)) [9781107015012](https://en.wikipedia.org/wiki/Special:BookSources/9781107015012).

1. ^ [***a***](#cite_ref-Barrado_6-0) [***b***](#cite_ref-Barrado_6-1) Barrado, D.; Byrne, P. B. (June 1995). ["BV(RI)_KC_ CCD photometry of the core of the young open cluster, NGC 5460"](https://ui.adsabs.harvard.edu/?#abs/1995A%26AS..111..275B). *Astronomy and Astrophysics Supplement*. **111**: 275. [Bibcode](/source/Bibcode_(identifier)):[1995A&AS..111..275B](https://ui.adsabs.harvard.edu/abs/1995A&AS..111..275B).

1. **[^](#cite_ref-7)** Paunzen, E.; Hensberge, H.; Maitzen, H. M.; Netopil, M.; Trigilio, C.; Fossati, L.; Heiter, U.; Pranka, M. (26 November 2010). ["A photometric long-term study of chemically peculiar stars in open clusters"](ftp://cdsarc.u-strasbg.fr/pub/cats/J/A%2BA/525/A16/stars.v00). *Astronomy & Astrophysics* ([FTP](/source/FTP)). pp. A16. [arXiv](/source/ArXiv_(identifier)):[1012.0149](https://arxiv.org/abs/1012.0149). [Bibcode](/source/Bibcode_(identifier)):[2011A&A...525A..16P](https://ui.adsabs.harvard.edu/abs/2011A&A...525A..16P). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/200913789](https://doi.org/10.1051%2F0004-6361%2F200913789). [S2CID](/source/S2CID_(identifier)) [15373925](https://api.semanticscholar.org/CorpusID:15373925).[*dead ftp link*] (To view documents see [Help:FTP](https://en.wikipedia.org/wiki/Help:FTP))

## External links

Wikimedia Commons has media related to [NGC 5460](https://commons.wikimedia.org/wiki/Category:NGC_5460).

- NGC 5460 on [WikiSky](/source/WikiSky): [DSS2](http://www.wikisky.org/?object=NGC+5460&img_source=DSS2), [SDSS](http://www.wikisky.org/?object=NGC+5460&img_source=SDSS), [GALEX](http://www.wikisky.org/?object=NGC+5460&img_source=GALEX), [IRAS](http://www.wikisky.org/?object=NGC+5460&img_source=IRAS), [Hydrogen α](http://www.wikisky.org/?object=NGC+5460&img_source=HALPHA), [X-Ray](http://www.wikisky.org/?object=NGC+5460&img_source=RASS), [Astrophoto](http://www.wikisky.org/?object=NGC+5460&img_source=IMG_all), [Sky Map](http://www.wikisky.org/?object=NGC+5460), [Articles and images](http://www.wikisky.org/starview?object=NGC+5460)

v t e Astronomical catalogs NGC NGC 5155 NGC 5156 NGC 5157 NGC 5158 NGC 5159 NGC 5160 NGC 5161 NGC 5162 NGC 5163 NGC 5164 NGC 5165 Collinder Collinder 276 Collinder 277 Collinder 278 Collinder 279 Collinder 280 Collinder 281 Collinder 282 Collinder 283 Collinder 284

v t e Constellation of Centaurus List of stars in Centaurus Centaurus in Chinese astronomy Stars Bayer α A (Rigil Kentaurus) B (Toliman) C (Proxima Centauri) β (Hadar) γ δ ε ζ (Leepwal) η θ (Menkent) ι (Kulou) κ λ μ ν (Heng) ξ1 ξ2 ο1 ο2 π ρ σ τ υ1 υ2 φ χ ψ x1 x2 C3 D E F G H J K M N Q Flamsteed 1 (i) 2 (g) 3 (k) 4 (h) Variable R T V Y RR SV SX BV DY UY V346 V553 V744 V752 V761 (a) V763 (C1) V766 V779 (Krzemiński's star) V803 V810 V816 (Przybylski's Star) V831 V842 V885 V886 V863 V1032 V1369 V1400 V1935 HR 4460 (A) 4466 (C2) 4499 4522 4523 4537 (j) 4546 (B) 4721 4748 (u) 4796 4817 (l) 4831 (w) 4874 (p) 4888 (e) 4889 (n) 4940 (f) 4979 4989 5006 (r) 5041 (m) 5089 (d) 5174 (z) 5222 (y) 5224 5241 5297 5358 (v) 5371 5471 (b) 5485 (c1) 5489 (c2) HD 97413 98176 100453 101581 101930 102117 (Uklun) 103197 107914 108236 109749 110113 113538 113766 114386 114729 115600 116434 (Matza) 117207 117618 (Dofida) 117939 120411 121228 121504 124448 (Popper's Star) 125072 125595 131399 Other 2MASS J1126−5003 2M1207 Gaia BH2 HD 131399 Ab PSR B1259−63 PSR J1311−3430 TOI-763 WASP-15 (Nyamien) WASP-41 WASP-42 WASP-167/KELT-13 Exoplanets 2M1207b b Centauri b HD 101930 b HD 102117 b (Leklsullun) HD 103197 b HD 109749 b HD 113538 b c HD 114386 b HD 114729 b HD 117207 b HD 117618 b (Noifasui) HD 121504 b HIP 65426 b (Najsakopajk) HIP 67522 b NGTS-13b Proxima Centauri b c d WASP-15b (Asye) Star clusters NGC 3766 4230 4507 5281 5286 5316 5460 5617 5662 Other IC 2944 ω Centauri Scorpius–Centaurus association Stock 16 Nebulae NGC 3918 5307 Other Boomerang Nebula Fleming 1 G292.0+1.8 G306.3-0.9 Gum 41 IC 2944 IRAS 13208−6020 RCW 79 RCW 86 Southern Crab Nebula SuWt 2 Galaxies NGC 3557 3568 3749 3783 4444 4603 4622 4650A 4683 4696 4706 4709 4729 4730 4743 4744 4909 4930 4945 4976 5011 A 5026 5064 5082 5090 5091 5102 5114 5121 5128 (Centaurus A) 5161 5206 5253 5266 5291 5398 5408 5419 5483 5516 Other ESO 269-57 ESO 325-4 ESO 383-76 ESO 444-46 Fourcade-Figueroa Object IC 3370 IC 4214 IC 4329A IRAS 13224−3809 J1144−4308 LEDA 677373 PKS 1144−379 PKS 1353−341 PKS 1424−418 Galaxy clusters Abell S740 Centaurus Cluster Shapley Supercluster Astronomical events GW190521 SN 185 SN 1895B (Z) SN 1972E SN 1986G J1407b SN 2019so Category

v t e New General Catalogue 5001 to 6000 5001 to 5100 5001 5002 5003 5004 5005 5008 5010 5011 5018 5020 5023 5024 5026 5030 5032 5033 5034 5042 5050 5053 5054 5055 5068 5078 5084 5085 5087 5090 5091 5098 5101 to 5200 5101 5102 5112 5114 5121 5128 5135 5139 5144 5161 5162/5174 5164 5170 5177 5185 5189 5194 5195 5198 5201 to 5300 5201 5204 5221 5223 5229 5235 5236 5238 5247 5248 5251 5252 5253 5256 5257 5258 5260 5264 5272 5273 5278 5279 5281 5286 5291 5300 5301 to 5400 5307 5308 5314 5315 5316 5322 5331 5334 5335 5343 5363 5364/5317 5371 5377 5384 5390 5394 5395 5398 5401 to 5500 5406 5408 5410 5416 5419 5422 5426 and 5427 5448 5455 5457 5460 5461 5466 5468 5470 5471 5473 5474 5475 5477 5483 5485 5486 5490 5493 5495 5500 5501 to 5600 5501 5502/5503 5504 5506 5508 5514 5516 5523 5529 5530 5532 5533 5535 5539 5541 5544 5545 5548 5557 5559 5566 5575/5578 5579 5582 5584 5585 5591 5597 5601 to 5700 5601 5605 5609 5613 5614 5615 5617 5619 5626 5629 5630 5634 5640 5641 5643 5653 5662 5665 5668 5676 5678 5679 5682 5683 5694 5701 to 5800 5701 5705 5713 5714 5719/5658 5722 5728 5746 5749 5750 5752 5753 5754 5755 5765 5772 5774 5775 5777 5778 5784 5790 5792 5793 5801 to 5900 5806 5820 5821 5822 5823 5824 5829 5837 5838 5844 5846 5850 5854 5856 5857 5861 5866 5875 5876 5879 5882 5885 5886 5890 5896 5897 5898 5901 to 6000 5904 5906 5907 5910 5915 5917 5920 5921 5925 5927 5928 5929 5930 5936 5939 5940 5949 5953 5957 5962 5963 5964 5965 5966 5970 5979 5980 5982 5985 5986 5988 5996 5999 6000 Astronomical catalog List of NGC objects 5001–6000

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Adapted from the Wikipedia article [NGC 5460](https://en.wikipedia.org/wiki/NGC_5460) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/NGC_5460?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.