WASP-55

Star in constellation of Virgo

WASP-55  Observation data
Epoch J2000      Equinox J2000

Constellation | Virgo[1]
Right ascension | 13h 35m 01.9538s[2]
Declination | −17° 30′ 12.528″[2]
Apparent magnitude (V) | 11.75[3]
Characteristics
Evolutionary stage | Main sequence[4]
Spectral type | G1[4]
Astrometry
Radial velocity (Rv)| −3.31±0.87[2] km/s
Proper motion (μ)|  RA: +12.037 mas/yr[2]
Dec.: −3.747 mas/yr[2]
Parallax (π)| 3.4194±0.0204 mas[2]
Distance| 954 ± 6 ly
(292 ± 2 pc)
Details
Mass| 1.16±0.03[5] M☉
Radius| 1.11±0.01[5] R☉
Luminosity| 1.48[6] L☉
Surface gravity (log g)| 4.413±0.006[5] cgs
Temperature| 6,070+51
−46[5] K
Metallicity [Fe/H]| 0.09±0.05[5] dex
Rotational velocity (v sin i)| 3.1±1.0[7] km/s
Age| 1.1+0.8
−0.6[8] Gyr
Other designations
EPIC 212300977, TOI-774, TIC 294301883, WASP-55, TYC 6125-113-1, 2MASS J13350194-1730124[9]
Database references
SIMBAD| data
Exoplanet Archive| data

WASP-55 is a G-type main-sequence star about 954 light-years away in the constellation Virgo. The star is much younger than the Sun at approximately 1.1+0.8
−0.6 billion years.[8] WASP-55 is similar to the Sun in concentration of heavy elements.[10]

A multiplicity survey in 2016 found one candidate stellar companion to WASP-55 at a projected separation of 4.435″±0.018″.[11] Follow-up observations in 2017 were unable to confirm if the suspected companion red dwarf star, with a temperature of 3,340±90 K, is gravitationally bound to WASP-55 or not.[12] It was confirmed in 2019 using Gaia DR2 data.[13]

## Planetary system

[edit]

In 2012 a transiting hot Jupiter planet, WASP-55b, was detected on a tight, circular orbit.[14] Its equilibrium temperature is 1,305 K.[5]

The WASP-55 planetary system[5] Companion
(in order from star) | Mass | Semimajor axis
(AU) | Orbital period
(days) | Eccentricity | Inclination | Radius

|
|
|
|
|
|

b | 0.62±0.04 MJ | 0.0558±0.0006 | 4.4656291(11)[8] | <0.056[7] | 89.0±0.2° | 1.34±0.01 RJ

## References

[edit]

1. ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
2. ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
3. ^ 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:2000A&A...355L..27H.
4. ^ a b Llorente De Andrés, F.; Chavero, C.; de la Reza, R.; Roca-Fàbrega, S.; Cifuentes, C. (2021). "The evolution of lithium in FGK dwarf stars. The lithium-rotation connection and the Li desert". Astronomy and Astrophysics. 654. arXiv:2108.05852. Bibcode:2021A&A...654A.137L. doi:10.1051/0004-6361/202141339.
5. ^ a b c d e f g Clark, B. J. M.; Anderson, D. R.; Hellier, C.; Turner, O. D.; Močnik, T. (2018). "An analysis of transiting hot Jupiters observed with K2: WASP-55b and WASP-75b". Publications of the Astronomical Society of the Pacific. 130 (985): 034401. arXiv:1802.02132. Bibcode:2018PASP..130c4401C. doi:10.1088/1538-3873/aaa33e. S2CID 119077382.
6. ^ Hardegree-Ullman, Kevin K.; Zink, Jon K.; Christiansen, Jessie L.; Dressing, Courtney D.; Ciardi, David R.; Schlieder, Joshua E. (2020). "Scaling K2. I. Revised Parameters for 222,088 K2 Stars and a K2 Planet Radius Valley at 1.9 R⊕". The Astrophysical Journal Supplement Series. 247 (1): 28. arXiv:2001.11511. Bibcode:2020ApJS..247...28H. doi:10.3847/1538-4365/ab7230.
7. ^ a b Bonomo, A. S.; Desidera, S.; et al. (June 2017). "The GAPS Programme with HARPS-N at TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics. 602: A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882.
8. ^ a b c Southworth, John; et al. (2016). "High-precision photometry by telescope defocussing - VIII. WASP-22, WASP-41, WASP-42 and WASP-55". Monthly Notices of the Royal Astronomical Society. 457 (4): 4205. arXiv:1512.05549. Bibcode:2016MNRAS.457.4205S. doi:10.1093/mnras/stw279.
9. ^ "WASP-55", SIMBAD, Centre de données astronomiques de Strasbourg
10. ^ Petigura, Erik A.; Crossfield, Ian J. M.; Isaacson, Howard; Beichman, Charles A.; Christiansen, Jessie L.; Dressing, Courtney D.; Fulton, Benjamin J.; Howard, Andrew W.; Kosiarek, Molly R.; Lépine, Sébastien; Schlieder, Joshua E.; Sinukoff, Evan; Yee, Samuel W. (2018). "Planet Candidates from K2 Campaigns 5-8 and Follow-up Optical Spectroscopy". The Astronomical Journal. 155 (1): 21. arXiv:1711.06377. Bibcode:2018AJ....155...21P. doi:10.3847/1538-3881/aa9b83.
11. ^ Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A.; Andersen, M. I.; Bozza, V.; Bramich, D. M.; Burgdorf, M. J.; Ciceri, S.; d'Ago, G.; Figuera Jaimes, R.; Gu, S.-H.; Haugbølle, T.; Hinse, T. C.; Juncher, D.; Kains, N.; Kerins, E.; Korhonen, H.; Kuffmeier, M.; Mancini, L.; Peixinho, N.; Popovas, A.; Rabus, M.; Rahvar, S.; Schmidt, R. W.; et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere", Astronomy & Astrophysics, 589: A58, arXiv:1603.03274, Bibcode:2016A&A...589A..58E, doi:10.1051/0004-6361/201527970, S2CID 14215845
12. ^ 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:1709.07476, Bibcode:2018A&A...610A..20E, doi:10.1051/0004-6361/201731855, S2CID 53400492
13. ^ Mugrauer, M. (December 2019). "Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release". Monthly Notices of the Royal Astronomical Society. 490 (4): 5088–5102\. Bibcode:2019MNRAS.490.5088M. doi:10.1093/mnras/stz2673.
14. ^ Hellier, Coel; Anderson, D. R.; Collier Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Ségransan, D.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S.; West, R. G. (2012), "Seven transiting hot-Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b & WASP-67b", Monthly Notices of the Royal Astronomical Society, 426 (1): 739–750, arXiv:1204.5095, Bibcode:2012MNRAS.426..739H, doi:10.1111/j.1365-2966.2012.21780.x, S2CID 54713354

* v
* t
* e

Constellation of Virgo

* List of stars in Virgo

Stars|

| Bayer|

* α (Spica)
* β (Zavijava)
* γ (Porrima)
* δ (Minelauva)
* ε (Vindemiatrix)
* ζ (Heze)
* η (Zaniah)
* θ
* ι (Syrma)
* κ (Kang)
* λ (Khambalia)
* μ
* ν
* ξ
* ο
* π
* ρ
* σ
* τ
* υ
* φ (Elgafar)
* χ
* ψ
* ω

|

Flamsteed|

* 4 (A1)
* 6 (A2)
* 7 (b)
* 10
* 11
* 12
* 13
* 14
* 16 (c)
* 17
* 20
* 21 (q)
* 25 (f)
* 27
* 28
* 31 (d1)
* 32 (d2)
* 33
* 34
* 35
* 37
* 38
* 39
* 41
* 44 (k)
* 46
* 48
* 49
* 50
* 53
* 54
* 55
* 56
* 57
* 58
* 59 (e)
* 61
* 62
* 63
* 64
* 65
* 66
* 68 (i)
* 69
* 70
* 71
* 72
* 73
* 74 (l)
* 75
* 76 (h)
* 77
* 78 (o)
* 80
* 81
* 82 (m)
* 83
* 84
* 85
* 86
* 87
* 88
* 89
* 90 (p)
* 92
* 94
* 95
* 96
* 97
* 103
* 104
* 106
* 108
* 109
* 110
* 1 Ser (M Ser)
* 2 Ser

Variable|

* R
* S
* W
* RT
* SS
* SW
* AG
* AH
* BH
* CS
* CU
* EQ
* ET
* FG
* GL
* GW
* HW
* NY
* QS

HR|

* 4587
* 5183
* 5384

HD|

* 102195 (Flegetonte)
* 106252
* 106315
* 106515
* 107148
* 109271
* 114783
* 125612
* 126614
* 130322 (Mönch)
* 133600

Other|

* Gliese 486 (Gar)
* Gliese 514
* HAT-P-26 (Guahayona)
* HAT-P-27
* HE 1219-0312
* K2-19
* K2-229
* PSR B1257+12 (Lich)
* Qatar-2
* Ross 128
* Ross 458
* SDSS J1229+1122
* ULAS J133553.45+113005.2
* WASP-16
* WASP-24
* WASP-37
* WASP-39 (Malmok)
* WASP-54
* WASP-55
* WD 1145+017
* Wolf 424
* Wolf 489

| Exoplanets|

* 38 Virginis b
* 61 Virginis b
* c
* 70 Virginis b
* Gliese 504 b
* Gliese 536 b
* HD 102195 b (Lete)
* HD 106252 b
* HD 107148 b
* HD 114783 b
* HD 125612 b
* c
* d
* HD 126614 Ab
* HD 130322 b (Eiger)
* HR 5183 b
* K2-137b
* K2-229b
* KELT-21b
* PSR B1257+12 A (Draugr)
* B (Poltergeist)
* C (Phobetor)
* Ross 128 b
* WASP-16b
* WASP-24b
* WASP-39b (Bocaprins)
* WASP-85 Ab
* WASP-107b
* WD 1145+017 b

|

| Star clusters|

* HVGC-1
* Koposov 1
* NGC 5634

|

| Nebulae|

* Abell 36

|

Galaxies|

| Messier|

* 49
* 58
* 59
* 60
* 61
* 84
* 86
* 87
* 89
* 90
* 104 (Sombrero Galaxy)

|

NGC|

* 3776
* 3817
* 3818
* 3833
* 3843
* 3848
* 3852
* 3914
* 3915
* 4030
* 4123
* 4129
* 4178
* 4179
* 4197
* 4200
* 4206
* 4207
* 4216
* 4246
* 4252
* 4260
* 4261
* 4267
* 4273
* 4294
* 4296
* 4297
* 4299
* 4301
* 4305
* 4306
* 4307
* 4309
* 4313
* 4316
* 4318
* 4320
* 4324
* 4325
* 4326
* 4330
* 4333
* 4343
* 4365
* 4368
* 4380
* 4388
* 4402
* 4420
* 4424
* 4429
* 4436
* 4440
* 4451
* 4452
* 4454
* 4457
* 4458
* 4461
* 4464
* 4466
* 4467
* 4469
* 4470
* 4476
* 4478
* 4482
* 4483
* 4487
* 4488
* 4491
* 4492
* 4496
* 4497
* 4503
* 4504
* 4517
* 4519
* 4522
* 4526
* 4527
* 4528
* 4531
* 4535
* 4536
* 4544
* 4546
* 4550
* 4551
* 4564
* 4567
* 4568
* 4570
* 4578
* 4580
* 4586
* 4593
* 4596
* 4598
* 4606
* 4607
* 4608
* 4612
* 4620
* 4623
* 4630
* 4632
* 4636
* 4637
* 4638
* 4639
* 4643
* 4647 (Arp 116)
* 4654
* 4658
* 4660
* 4664
* 4666
* 4674
* 4680
* 4691
* 4694
* 4697
* 4698
* 4699
* 4700
* 4701
* 4713
* 4731
* 4733
* 4734
* 4746
* 4753
* 4754
* 4762
* 4772
* 4775
* 4777
* 4780
* 4781
* 4790
* 4818
* 4825
* 4845
* 4856
* 4866
* 4900
* 4902
* 4918
* 4939
* 4941
* 4958
* 4984
* 4991
* 4995
* 4999
* 5006
* 5010
* 5018
* 5030
* 5050
* 5054
* 5068
* 5084
* 5087
* 5170
* 5174
* 5177
* 5235
* 5247
* 5252
* 5300
* 5331
* 5334
* 5335
* 5343
* 5363
* 5364
* 5384
* 5468
* 5470
* 5501
* 5506
* 5555
* 5566
* 5575
* 5584
* 5619
* 5668
* 5679
* 5701
* 5705
* 5713
* 5719
* 5746
* 5750
* 5765
* 5774
* 5775
* 5806
* 5838
* 5846
* 5850

Other|

* A1689-zD1
* Abell 1835 IR1916
* Arp 240 (NGC 5257 and NGC 5258)
* Arp 271 (NGC 5426 and NGC 5427)
* 3C 273
* 3C 279
* 4C 03.24
* Eyes Galaxies
* GR 8
* Hedgehog
* IC 1011
* IC 1101
* IC 3078
* IC 3430
* IC 3583
* IRAS 12112+0305
* LEDA 1245565
* M60-UCD1
* PKS 1148-001
* PKS 1302–102
* PKS 1335−127
* PKS 1402+044

| Galaxy clusters|

* Abell 1689
* Abell 1835
* Abell 2029
* Abell 2147
* IRAS 13218+0552
* RX J1347.5−1145
* Virgo Cluster

|

| Astronomical events|

* North Polar Spur
* SN 1990N
* SN 1994D
* SN 2002cx
* SN 2007bi
* SN 2020jfo
* U1.11

|

Category
*[RA:]: Right Ascension
*[Dec.:]: Declination
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