# WASP-41

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Star in the constellation Centaurus

WASP-41 Observation data Epoch J2000 Equinox J2000 Constellation Centaurus[1] Right ascension 12h 42m 28.4950s[2] Declination −30° 38′ 23.529″[2] Apparent magnitude (V) 11.6[3] Characteristics Evolutionary stage main sequence[2] Spectral type G8V[4] Astrometry Radial velocity (Rv) 3.40±0.42[2] km/s Proper motion (μ) RA: 14.878 mas/yr[2] Dec.: 11.988 mas/yr[2] Parallax (π) 6.1193±0.0203 mas[2] Distance 533 ± 2 ly (163.4 ± 0.5 pc) Details Mass 0.987±0.047[5] M☉ Radius 0.886±0.017[5] R☉ Luminosity 0.64±0.04[6] L☉ Surface gravity (log g) 4.538±0.009[3] cgs Temperature 5,545±33[6] K Metallicity [Fe/H] 0.06±0.02[6] dex Rotation 18.41±0.05 d[7] Rotational velocity (v sin i) 1.50±0.05[8] km/s Age 2.289±0.077[9] Gyr Other designations CD−29 9873, TOI-780, TIC 398943781, WASP-41, TYC 7247-587-1, GSC 07247-00587, 2MASS J12422849-3038235[10] Database references SIMBAD data Exoplanet Archive data

**WASP-41** is a [G-type main-sequence star](/source/G-type_main-sequence_star) about 533 [light-years](/source/Light-year) away in the constellation [Centaurus](/source/Centaurus). Its surface temperature is 5450±150 [K](/source/Kelvin). WASP-41 is similar to the [Sun](/source/Sun) in its concentration of heavy elements, with a [metallicity](/source/Metallicity) Fe/H index of −0.080±0.090,[7] but is much younger at an age of 2.289±0.077 billion years.[9] The star exhibits strong [starspot](/source/Starspot) activity, with spots covering 3% of the stellar surface.[8]

Multiplicity surveys did not detect any stellar companions as of 2017.[11]

## Planetary system

In 2011, one planet, named WASP-41b, was discovered on a tight, circular orbit.[4] The transmission spectrum taken in 2017 was gray and featureless. No atmospheric constituents could be distinguished.[12] The planetary orbit of WASP-41b is slightly misaligned with the equatorial plane of the star, at a misalignment angle of 9.15+2.85 −2.62°.[8] The planetary equilibrium temperature is 1242±12 [K](/source/Kelvin).[3]

Another planet, WASP-41c, was discovered in 2015.[6] The planets are too far apart to significantly affect each other's orbits.[13] The planetary equilibrium temperature of WASP-41c is 247±5 [K](/source/Kelvin).[6]

The WASP-41 planetary system[6] Companion (in order from star) Mass Semimajor axis (AU) Orbital period (days) Eccentricity Inclination (°) Radius b 0.94±0.05 MJ 0.04022(44)[7] 3.0524040(9) <0.026 87.70±0.08[7] 1.18±0.03 RJ c ≥3.18±0.20 MJ 1.07±0.03 421±2 0.294±0.024 >70[5] —

## References

1. **[^](#cite_ref-Roman1987_1-0)** [Roman, Nancy G.](/source/Nancy_Roman) (1987). ["Identification of a constellation from a position"](https://doi.org/10.1086%2F132034). *[Publications of the Astronomical Society of the Pacific](/source/Publications_of_the_Astronomical_Society_of_the_Pacific)*. **99** (617): 695. [Bibcode](/source/Bibcode_(identifier)):[1987PASP...99..695R](https://ui.adsabs.harvard.edu/abs/1987PASP...99..695R). [doi](/source/Doi_(identifier)):[10.1086/132034](https://doi.org/10.1086%2F132034). [Constellation record for this object](https://vizier.cds.unistra.fr/viz-bin/VizieR-4?source=VI%2F42%2Fout&%2F%2Ftables=VI%2F42%2Fout&-c=WASP-41&-c.eq=J2000&-c.r=++2&-c.u=arcmin&-c.geom=r&-source=&-source=VI%2F42%2Fout&-out=RA1875&-out=DE1875&-out=Cst) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-DR3_2-0) [***b***](#cite_ref-DR3_2-1) [***c***](#cite_ref-DR3_2-2) [***d***](#cite_ref-DR3_2-3) [***e***](#cite_ref-DR3_2-4) [***f***](#cite_ref-DR3_2-5) 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%3D6160877943251930368%26-go+%25%23Sesame%23%25%26) at [VizieR](/source/VizieR).

1. ^ [***a***](#cite_ref-Southworth2015_3-0) [***b***](#cite_ref-Southworth2015_3-1) [***c***](#cite_ref-Southworth2015_3-2) Southworth, John; Tregloan-Reed, J.; Andersen, M. I.; Calchi Novati, S.; Ciceri, S.; Colque, J. P.; D'Ago, G.; Dominik, M.; Evans, D.; Gu, S. -H.; Herrera-Cruces, A.; Hinse, T. C.; Jorgensen, U. G.; Juncher, D.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Skottfelt, J.; Tronsgaard, R.; Unda-Sanzana, E.; Wang, X. -B.; Wertz, O.; Alsubai, K. A.; Andersen, J. M.; Bozza, V.; Bramich, D. M.; Burgdorf, M.; et al. (2015), *High-precision photometry by telescope defocussing. III. WASP-22, WASP-41, WASP-42 and WASP-55*, [arXiv](/source/ArXiv_(identifier)):[1512.05549](https://arxiv.org/abs/1512.05549), [Bibcode](/source/Bibcode_(identifier)):[2016MNRAS.457.4205S](https://ui.adsabs.harvard.edu/abs/2016MNRAS.457.4205S), [doi](/source/Doi_(identifier)):[10.1093/mnras/stw279](https://doi.org/10.1093%2Fmnras%2Fstw279), [S2CID](/source/S2CID_(identifier)) [44864064](https://api.semanticscholar.org/CorpusID:44864064)

1. ^ [***a***](#cite_ref-Maxted2010_4-0) [***b***](#cite_ref-Maxted2010_4-1) Maxted, P. F. L.; Anderson, D. R.; Collier Cameron, A.; Hellier, C.; Queloz, D.; Smalley, B.; Street, R. A.; Triaud, A. H. M. J.; West, R. G.; Gillon, M.; Lister, T. A.; Pepe, F.; Pollacco, D.; Ségransan, D.; Smith, A. M. S.; Udry, S. (2010), "WASP-41 b: A transiting hot Jupiter planet orbiting a magnetically-active G8 V star", *Publications of the Astronomical Society of the Pacific*, **123** (903): 547–554, [arXiv](/source/ArXiv_(identifier)):[1012.2977](https://arxiv.org/abs/1012.2977), [doi](/source/Doi_(identifier)):[10.1086/660007](https://doi.org/10.1086%2F660007), [S2CID](/source/S2CID_(identifier)) [40017204](https://api.semanticscholar.org/CorpusID:40017204)

1. ^ [***a***](#cite_ref-Becker2017_5-0) [***b***](#cite_ref-Becker2017_5-1) [***c***](#cite_ref-Becker2017_5-2) Becker, Juliette C.; Vanderburg, Andrew; Adams, Fred C.; Khain, Tali; Bryan, Marta (2017), "Exterior Companions to Hot Jupiters Orbiting Cool Stars Are Coplanar", *The Astronomical Journal*, **154** (6): 230, [arXiv](/source/ArXiv_(identifier)):[1710.01737](https://arxiv.org/abs/1710.01737), [Bibcode](/source/Bibcode_(identifier)):[2017AJ....154..230B](https://ui.adsabs.harvard.edu/abs/2017AJ....154..230B), [doi](/source/Doi_(identifier)):[10.3847/1538-3881/aa9176](https://doi.org/10.3847%2F1538-3881%2Faa9176), [S2CID](/source/S2CID_(identifier)) [119198122](https://api.semanticscholar.org/CorpusID:119198122)

1. ^ [***a***](#cite_ref-Neveu2016_6-0) [***b***](#cite_ref-Neveu2016_6-1) [***c***](#cite_ref-Neveu2016_6-2) [***d***](#cite_ref-Neveu2016_6-3) [***e***](#cite_ref-Neveu2016_6-4) [***f***](#cite_ref-Neveu2016_6-5) Neveu-VanMalle, M.; et al. (2016). ["Hot Jupiters with relatives: Discovery of additional planets in orbit around WASP-41 and WASP-47"](https://www.aanda.org/articles/aa/full_html/2016/02/aa26965-15/aa26965-15.html). *Astronomy and Astrophysics*. **586**. A93. [arXiv](/source/ArXiv_(identifier)):[1509.07750](https://arxiv.org/abs/1509.07750). [Bibcode](/source/Bibcode_(identifier)):[2016A&A...586A..93N](https://ui.adsabs.harvard.edu/abs/2016A&A...586A..93N). [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201526965](https://doi.org/10.1051%2F0004-6361%2F201526965). [S2CID](/source/S2CID_(identifier)) [53354547](https://api.semanticscholar.org/CorpusID:53354547).

1. ^ [***a***](#cite_ref-Bonomo2017_7-0) [***b***](#cite_ref-Bonomo2017_7-1) [***c***](#cite_ref-Bonomo2017_7-2) [***d***](#cite_ref-Bonomo2017_7-3) Bonomo, A. S.; Desidera, S.; Benatti, S.; Borsa, F.; Crespi, S.; Damasso, M.; Lanza, A. F.; Sozzetti, A.; Lodato, G.; Marzari, F.; Boccato, C.; Claudi, R. U.; Cosentino, R.; Covino, E.; Gratton, R.; Maggio, A.; Micela, G.; Molinari, E.; Pagano, I.; Piotto, G.; Poretti, E.; Smareglia, R.; Affer, L.; Biazzo, K.; Bignamini, A.; Esposito, M.; Giacobbe, P.; Hébrard, G.; Malavolta, L.; et al. (2017), "The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets", *Astronomy & Astrophysics*, **A107**: 602, [arXiv](/source/ArXiv_(identifier)):[1704.00373](https://arxiv.org/abs/1704.00373), [Bibcode](/source/Bibcode_(identifier)):[2017A&A...602A.107B](https://ui.adsabs.harvard.edu/abs/2017A&A...602A.107B), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201629882](https://doi.org/10.1051%2F0004-6361%2F201629882), [S2CID](/source/S2CID_(identifier)) [118923163](https://api.semanticscholar.org/CorpusID:118923163)

1. ^ [***a***](#cite_ref-Oshagh2018_8-0) [***b***](#cite_ref-Oshagh2018_8-1) [***c***](#cite_ref-Oshagh2018_8-2) Oshagh, M.; Triaud, A. H. M. J.; Burdanov, A.; Figueira, P.; Reiners, Ansgar; Santos, N. C.; Faria, J.; Boue, G.; Díaz, R. F.; Dreizler, S.; Boldt, S.; Delrez, L.; Ducrot, E.; Gillon, M.; Guzman Mesa, A.; Jehin, E.; Khalafinejad, S.; Kohl, S.; Serrano, L.; Udry, S. (2018), "Activity induced variation in spin-orbit angles as derived from Rossiter-McLaughlin measurements", *Astronomy & Astrophysics*, **619**: A150, [arXiv](/source/ArXiv_(identifier)):[1809.01027](https://arxiv.org/abs/1809.01027), [Bibcode](/source/Bibcode_(identifier)):[2018A&A...619A.150O](https://ui.adsabs.harvard.edu/abs/2018A&A...619A.150O), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201833709](https://doi.org/10.1051%2F0004-6361%2F201833709), [S2CID](/source/S2CID_(identifier)) [54578441](https://api.semanticscholar.org/CorpusID:54578441)

1. ^ [***a***](#cite_ref-Gallet2020_9-0) [***b***](#cite_ref-Gallet2020_9-1) Gallet, F.; Gallet (2020), "TATOO: Tidal-chronology standalone tool to estimate the age of massive close-in planetary systems", *Astronomy & Astrophysics*, **641**: A38, [arXiv](/source/ArXiv_(identifier)):[2006.07880](https://arxiv.org/abs/2006.07880), [Bibcode](/source/Bibcode_(identifier)):[2020A&A...641A..38G](https://ui.adsabs.harvard.edu/abs/2020A&A...641A..38G), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/202038058](https://doi.org/10.1051%2F0004-6361%2F202038058), [S2CID](/source/S2CID_(identifier)) [219687851](https://api.semanticscholar.org/CorpusID:219687851)

1. **[^](#cite_ref-SIMBAD_10-0)** ["CD-29 9873"](http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CD-29+9873). *[SIMBAD](/source/SIMBAD)*. [Centre de données astronomiques de Strasbourg](/source/Centre_de_donn%C3%A9es_astronomiques_de_Strasbourg). Retrieved 2020-12-22.

1. **[^](#cite_ref-11)** Evans, D. F.; Southworth, J.; Smalley, B.; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Hinse, T. C.; Henning, Th.; Hundertmark, M.; Kains, N.; Kerins, E.; Korhonen, H.; Kokotanekova, R.; Kuffmeier, M.; Longa-Peña, P.; Mancini, L.; MacKenzie, J.; Popovas, A.; Rabus, M.; Rahvar, S.; Sajadian, S.; Snodgrass, C.; et al. (2018), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016", *Astronomy & Astrophysics*, **610**: A20, [arXiv](/source/ArXiv_(identifier)):[1709.07476](https://arxiv.org/abs/1709.07476), [Bibcode](/source/Bibcode_(identifier)):[2018A&A...610A..20E](https://ui.adsabs.harvard.edu/abs/2018A&A...610A..20E), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201731855](https://doi.org/10.1051%2F0004-6361%2F201731855), [S2CID](/source/S2CID_(identifier)) [53400492](https://api.semanticscholar.org/CorpusID:53400492)

1. **[^](#cite_ref-12)** Juvan, Ines G.; Lendl, M.; Cubillos, P. E.; Fossati, L.; Tregloan-Reed, J.; Lammer, H.; Guenther, E. W.; Hanslmeier, A. (2018), "PyTranSpot- A tool for multiband light curve modeling of planetary transits and stellar spots", *Astronomy & Astrophysics*, **610**: A15, [arXiv](/source/ArXiv_(identifier)):[1710.11209](https://arxiv.org/abs/1710.11209), [Bibcode](/source/Bibcode_(identifier)):[2018A&A...610A..15J](https://ui.adsabs.harvard.edu/abs/2018A&A...610A..15J), [doi](/source/Doi_(identifier)):[10.1051/0004-6361/201731345](https://doi.org/10.1051%2F0004-6361%2F201731345), [S2CID](/source/S2CID_(identifier)) [55138492](https://api.semanticscholar.org/CorpusID:55138492)

1. **[^](#cite_ref-13)** Lai, Dong; Anderson, Kassandra R.; Pu, Bonan (2018), "How do External Companions Affect Spin-Orbit Misalignment of Hot Jupiters?", *Monthly Notices of the Royal Astronomical Society*, **475** (4): 5231–5236, [arXiv](/source/ArXiv_(identifier)):[1710.11140](https://arxiv.org/abs/1710.11140), [Bibcode](/source/Bibcode_(identifier)):[2018MNRAS.475.5231L](https://ui.adsabs.harvard.edu/abs/2018MNRAS.475.5231L), [doi](/source/Doi_(identifier)):[10.1093/mnras/sty133](https://doi.org/10.1093%2Fmnras%2Fsty133), [S2CID](/source/S2CID_(identifier)) [119066265](https://api.semanticscholar.org/CorpusID:119066265)

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 [WASP-41](https://en.wikipedia.org/wiki/WASP-41) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/WASP-41?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.