# HD 100453

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Young binary in constellation Centaurus

HD 100453 An unusual structure around HD 100453 uncovered by ESO's SPHERE, a planet-hunting instrument installed on the Very Large Telescope in Chile[1] Observation data Epoch J2000 Equinox J2000 Constellation Centaurus[2] Right ascension 11h 33m 05.5766s[3] Declination −54° 19′ 28.547″[3] Apparent magnitude (V) 7.79[4] Characteristics Evolutionary stage Herbig Ae/Be star[5] Spectral type A9Ve[6] Apparent magnitude (g) 7.735[3] Apparent magnitude (B) 8.07[5] Apparent magnitude (R) 7.63[5] Apparent magnitude (K) 5.60[5] Astrometry Radial velocity (Rv) 14.597[3] km/s Proper motion (μ) RA: −36.96±0.02 mas/yr[3] Dec.: −5.86±0.02 mas/yr[3] Parallax (π) 9.636±0.022 mas[3] Distance 338.5 ± 0.8 ly (103.8 ± 0.2 pc) Absolute magnitude (MV) +2.39[2] Orbit[7] Semi-major axis (a) 207 au Eccentricity (e) 0.32 Inclination (i) 49° Longitude of the node (Ω) 47° Periastron epoch (T) 1790 Argument of periastron (ω) (secondary) 18° Details A Mass 1.60+0.05 −0.04[8] M☉ Radius 1.57 ± 0.11[8][a] R☉ Luminosity 6.31±0.14[8] L☉ Surface gravity (log g) 4.47±0.05[8] cgs Temperature 7,250±250[5][8] K Metallicity [Fe/H] −0.1±0.1[8] dex Rotation 0.92±0.10[8] days Rotational velocity (v sin i) 50±3[8] km/s Age 19.28+0.70 −0.68[8] Myr B Mass 0.20±0.04[7] M☉ Radius 0.77[7][b] R☉ Luminosity 0.06[7] L☉ Temperature 3,250[7] K Other designations CD−53°4102, HIP 56354, TYC 8617-1438-1, GSC 08617-01438, 2MASS J11330559-5419285[9] Database references SIMBAD data

**HD 100453** is a [binary star](/source/Binary_star) system which lies in the constellation [Centaurus](/source/Centaurus_(constellation)) about 350 [light years](/source/Light_years) away from the [Sun](/source/Sun) and is a member of the [open cluster](/source/Open_cluster) [Scorpius–Centaurus association](/source/Scorpius%E2%80%93Centaurus_association).

## Components

The apparent magnitudes of the visible components A and B are 7.8 and 15.9 respectively. The primary is a [Herbig Ae/Be star](/source/Herbig_Ae%2FBe_star), which is young but no longer accreting mass.[10] The secondary is an M4 class [red dwarf](/source/Red_dwarf) star at the projected separation 120 [AU](/source/Astronomical_unit) from the primary.[11]

## Circumstellar disks

The primary star is surrounded by two dust disks, separated by a gap. The disks are orbiting in different planes, misaligned by 72 degrees. The disk misalignment may be caused by a suspected [superjovian planet](/source/Super-Jupiter) orbiting within the gap,[5] roughly 15–20 [AU](/source/Astronomical_unit) from the primary.[12] The outer disk has a 2-arm spiral structure caused by the outer stellar companion HD 100453B.[11] The outer disk is rather massive at 0.0174 [M☉](/source/Solar_mass),[13] but is significantly depleted in gas, with a gas-to-dust mass ratio of no more than 4:1.[10]

The HD 100453A planetary system Companion (in order from star) Mass Semimajor axis (AU) Orbital period (days) Eccentricity Inclination (°) Radius inner disk 0.315[5] AU 46.05+0.88 −0.92 [5]° — outer disk 45[11] AU 33.80+0.77 −0.72[5]° —

The gas present in the disks is unusually depleted in nitrogen and hydrogen-bearing compounds and enriched in [carbon monoxide](/source/Carbon_monoxide).[14] Molecular hydrogen was not detected.[15] Solid silicate material present in the disks shows good crystallinity, with reduced amounts of amorphous material.[16]

No disks were detected around the companion star HD 100453B, with the upper limit on the amount of dust around it being 0.03 [*M*🜨](/source/Earth_mass).[17]

## Notes

1. **[^](#cite_ref-radius1_9-0)** Calculated, using the [Stefan-Boltzmann law](/source/Stefan-Boltzmann_law) and the star's [effective temperature](/source/Effective_temperature) and luminosity, with respect to the [solar](/source/Sun) nominal effective temperature of 5,772 [K](/source/Kelvin): ( 5 , 772 7 , 250 ) 4 ⋅ 10 0.79 = 1.57 R ⊙ . {\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{7,250}}{\biggr )}^{4}\cdot 10^{0.79}}}=1.57\ R_{\odot }.}

1. **[^](#cite_ref-radius2_10-0)** Calculated, using the [Stefan-Boltzmann law](/source/Stefan-Boltzmann_law) and the star's [effective temperature](/source/Effective_temperature) and luminosity, with respect to the [solar](/source/Sun) nominal effective temperature of 5,772 [K](/source/Kelvin): ( 5 , 772 3 , 250 ) 4 ⋅ 0.06 = 0.77 R ⊙ . {\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{3,250}}{\biggr )}^{4}\cdot 0.06}}=0.77\ R_{\odot }.}

## References

1. **[^](#cite_ref-ESO_1-0)** ["SPHERE reveals spiral disc around nearby star"](https://www.eso.org/public/images/potw1542a/). *European Southern Observatory*. Retrieved 27 September 2024.

1. ^ [***a***](#cite_ref-xhip_2-0) [***b***](#cite_ref-xhip_2-1) Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". *[Astronomy Letters](/source/Astronomy_Letters)*. **38** (5): 331. [arXiv](/source/ArXiv_(identifier)):[1108.4971](https://arxiv.org/abs/1108.4971). [Bibcode](/source/Bibcode_(identifier)):[2012AstL...38..331A](https://ui.adsabs.harvard.edu/abs/2012AstL...38..331A). [doi](/source/Doi_(identifier)):[10.1134/S1063773712050015](https://doi.org/10.1134%2FS1063773712050015). [XHIP record for this object](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-ref=VIZ681510a8389ecb&-out.src=V%2F137D%2FXHIP&-nav=cat%3AV%2F137D%26tab%3A{V%2F137D%2FXHIP}%26key%3Asource%3DV%2F137D%2FXHIP%26HTTPPRM%3A&-source=V%2F137D%2FXHIP&-out=HIP&HIP=56354&-out=Comp&-out=Gr&-out=RAJ2000&-out=DEJ2000&-out=Dist&-out=X&-out=Y&-out=Z&-out=SpType&-out=Simbad&-out=Hpmag&-out=Lum&-out=Cst) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-DR3_3-0) [***b***](#cite_ref-DR3_3-1) [***c***](#cite_ref-DR3_3-2) [***d***](#cite_ref-DR3_3-3) [***e***](#cite_ref-DR3_3-4) [***f***](#cite_ref-DR3_3-5) Vallenari, A.; et al. (Gaia collaboration) (2023), ["*Gaia* Data Release 3. Summary of the content and survey properties"](https://doi.org/10.1051%2F0004-6361%2F202243940), *Astronomy and Astrophysics*, **674**: A1, [arXiv](/source/ArXiv_(identifier)):[2208.00211](https://arxiv.org/abs/2208.00211), [Bibcode](/source/Bibcode_(identifier)):[2023A&A...674A...1G](https://ui.adsabs.harvard.edu/abs/2023A&A...674A...1G), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202243940](https://doi.org/10.1051%2F0004-6361%2F202243940), [S2CID](/source/S2CID_(identifier)) [244398875](https://api.semanticscholar.org/CorpusID:244398875) [Gaia DR3 record for this source](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-source=+I%2F355&-from=nav&-nav=cat%3AI%2F355%26tab%3A%7BI%2F355%2Fgaiadr3%7D%26key%3Asource%3D1355%2Fgaiadr3%26HTTPPRM%3A%26-out.add%3D.%26Source%3D%3D%3D5345011040956367104%26-go+%25%23Sesame%23%25%26) at [VizieR](/source/VizieR).

1. **[^](#cite_ref-tycho2_4-0)** Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". *Astronomy and Astrophysics*. **355**. [Bibcode](/source/Bibcode_(identifier)):[2000A&A...355L..27H](https://ui.adsabs.harvard.edu/abs/2000A&A...355L..27H).

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1. **[^](#cite_ref-vieira2003_6-0)** Vieira, S. L. A.; Corradi, W. J. B.; Alencar, S. H. P.; Mendes, L. T. S.; Torres, C. A. O.; Quast, G. R.; Guimarães, M. M.; Da Silva, L. (2003). "Investigation of 131 Herbig Ae/Be Candidate Stars". *The Astronomical Journal*. **126** (6): 2971. [Bibcode](/source/Bibcode_(identifier)):[2003AJ....126.2971V](https://ui.adsabs.harvard.edu/abs/2003AJ....126.2971V). [doi](/source/Doi_(identifier)):[10.1086/379553](https://doi.org/10.1086%2F379553).

1. ^ [***a***](#cite_ref-Jean-François2020_7-0) [***b***](#cite_ref-Jean-François2020_7-1) [***c***](#cite_ref-Jean-François2020_7-2) [***d***](#cite_ref-Jean-François2020_7-3) [***e***](#cite_ref-Jean-François2020_7-4) Jean-François, Gonzalez; van der Plas, Gerrit; Christophe, Pinte; Nicolás, Cuello; Rebecca, Nealon; François, Ménard; Alexandre, Revol; Laetitia, Rodet; Maud, Langlois; Anne-Lise, Maire (2020-11-10). ["Spirals, shadows, and precession in HD 100453 – I. The orbit of the binary"](https://doi.org/10.1093%2Fmnras%2Fstaa2938). *Monthly Notices of the Royal Astronomical Society*. **499** (3): 3837–3856. [arXiv](/source/ArXiv_(identifier)):[2009.10504](https://arxiv.org/abs/2009.10504). [doi](/source/Doi_(identifier)):[10.1093/mnras/staa2938](https://doi.org/10.1093%2Fmnras%2Fstaa2938). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. ^ [***a***](#cite_ref-Mendigutia2026_8-0) [***b***](#cite_ref-Mendigutia2026_8-1) [***c***](#cite_ref-Mendigutia2026_8-2) [***d***](#cite_ref-Mendigutia2026_8-3) [***e***](#cite_ref-Mendigutia2026_8-4) [***f***](#cite_ref-Mendigutia2026_8-5) [***g***](#cite_ref-Mendigutia2026_8-6) [***h***](#cite_ref-Mendigutia2026_8-7) [***i***](#cite_ref-Mendigutia2026_8-8) Mendigutía, I.; Campbell-White, J.; Montesinos, B.; Maldonado, J.; Fullana-García, L.; Mirouh, G. M.; Meeus, G.; Vioque, M.; Sicilia-Aguilar, A.; Zapatero-Osorio, M. R.; Villaver, E.; Kahar, R. (2026-04-06). "Lithium and the evolution of intermediate-mass T Tauri and Herbig stars. Rotation, accretion, and planets". *Astronomy & Astrophysics*. [arXiv](/source/ArXiv_(identifier)):[2604.05040](https://arxiv.org/abs/2604.05040). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202659302](https://doi.org/10.1051%2F0004-6361%2F202659302). [ISSN](/source/ISSN_(identifier)) [0004-6361](https://search.worldcat.org/issn/0004-6361).

1. **[^](#cite_ref-Simbad_11-0)** ["HD 100453"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+100453), *[SIMBAD](/source/SIMBAD)*, [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg), retrieved 2022-06-15

1. ^ [***a***](#cite_ref-Collins2009_12-0) [***b***](#cite_ref-Collins2009_12-1) Collins, K. A.; Grady, C. A.; Hamaguchi, K.; Wisniewski, J. P.; Brittain, S.; Sitko, M.; Carpenter, W. J.; Williams, J. P.; Mathews, G. S.; Williger, G. M.; Van Boekel, R.; Carmona, A.; Henning, Th.; Van Den Ancker, M. E.; Meeus, G.; Chen, X. P.; Petre, R.; Woodgate, B. E. (2009), "Hd 100453: A Link Between Gas-Rich Protoplanetary Disks and Gas-Poor Debris Disks", *The Astrophysical Journal*, **697** (1): 557–572, [arXiv](/source/ArXiv_(identifier)):[0903.0440](https://arxiv.org/abs/0903.0440), [Bibcode](/source/Bibcode_(identifier)):[2009ApJ...697..557C](https://ui.adsabs.harvard.edu/abs/2009ApJ...697..557C), [doi](/source/Doi_(identifier)):[10.1088/0004-637X/697/1/557](https://doi.org/10.1088%2F0004-637X%2F697%2F1%2F557), [S2CID](/source/S2CID_(identifier)) [18159262](https://api.semanticscholar.org/CorpusID:18159262)

1. ^ [***a***](#cite_ref-Dong2015_13-0) [***b***](#cite_ref-Dong2015_13-1) [***c***](#cite_ref-Dong2015_13-2) Dong (董若冰), Ruobing; Zhu (朱照寰), Zhaohuan; Fung (馮澤之), Jeffrey; Rafikov, Roman; Chiang (蔣詒曾), Eugene; Wagner, Kevin (2015), "An M Dwarf Companion and ITS Induced Spiral Arms in the Hd 100453 Protoplanetary Disk", *The Astrophysical Journal*, **816**: L12, [arXiv](/source/ArXiv_(identifier)):[1512.04949](https://arxiv.org/abs/1512.04949), [doi](/source/Doi_(identifier)):[10.3847/2041-8205/816/1/L12](https://doi.org/10.3847%2F2041-8205%2F816%2F1%2FL12), [S2CID](/source/S2CID_(identifier)) [119120465](https://api.semanticscholar.org/CorpusID:119120465)

1. **[^](#cite_ref-Nealon_14-0)** Nealon, Rebecca; Cuello, Nicolás; Gonzalez, Jean-François; Van Der Plas, Gerrit; Pinte, Christophe; Alexander, Richard; Ménard, François; Price, Daniel J. (2020), "Spirals, shadows & precession in HD 100453 – II. The hidden companion", *Monthly Notices of the Royal Astronomical Society*, **499** (3): 3857–3867, [arXiv](/source/ArXiv_(identifier)):[2009.10505](https://arxiv.org/abs/2009.10505), [doi](/source/Doi_(identifier)):[10.1093/mnras/staa2721](https://doi.org/10.1093%2Fmnras%2Fstaa2721)

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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

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Adapted from the Wikipedia article [HD 100453](https://en.wikipedia.org/wiki/HD_100453) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/HD_100453?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.