V1331 Cygni

Short description: Star in constellation Cygnus

Coordinates:  21h 01m 9.21s, +50° 21′ 44.77″

V1331 Cygni

200px
V1331 Cygni as photographed by the Hubble Space Telescope

Observation data
Equinox J2000.0]] (ICRS)
Constellation | Cygnus
Right ascension |  21h 01m 09.20684s[1]
Declination | +50° 21′ 44.8033″[1]
Apparent magnitude (V) | 11.99[2]
Characteristics
Astrometry
Proper motion (μ)|  RA: 0.980[1] mas/yr
Dec.: −3.783[1] mas/yr
Parallax (π)| 1.6760 ± 0.0237[1] mas
Distance| 1,950 ± 30 ly
(597 ± 8 pc)
Details[3]
Mass| 2.8 M☉
Radius| 5 R☉
Temperature| 5200 K
Other designations

V1331 Cyg, GSC 03596-00959, 2MASS J21010920+5021445

Database references
SIMBAD| data

V1331 Cygni (also known as V1331 Cyg) is a young star in the located 1,950 light years from Earth on the constellation of Cygnus. V1331 Cyg is located in the dark nebula LDN 981.[4]

Six visual band light curves for V1331 Cygni, adapted from Mel'nikov (1997)[5]

V1331 Cygni is most noted for having an arc-like reflection nebula surrounding it. This circumstellar disc is a great birthplace for young stars, which form in the cloud.[6] V1331 Cygni is heavily obscured by dust, so the properties of the central star are hard to deduce; however, it is estimated to have a radius five times that of the Sun and a mass of 2.8 M☉.[3]

The General Catalog of Variable Stars classifies V1331 Cygni as an "INST" type variable, meaning a T Tauri star which shows rapid light variations.[7][8] Its visual band brightness varies from magnitude 13.08 to 10.58.[7] It is sometimes classified as a pre-FUOR star.[9] A semi-regular period of ~449 days has been reported.[9] Unlike many T Tauri stars, the mean brightness of V1331 Cygni remains nearly constant over long time periods.[10][5]

## Gallery

* Dark nebula LDN 981 and V1331 Cygni (top center) by the Mount Lemmon SkyCenter

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
2. ↑ Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode: 2012yCat.1322....0Z.
3. ↑ 3.0 3.1 Cite error: Invalid `<ref>` tag; no text was provided for refs named `Petrov`
4. ↑ "A young star takes centre stage". https://www.spacetelescope.org/images/potw1509a/. Retrieved 10 May 2019.
5. ↑ 5.0 5.1 Mel'nikov, S. Yu. (1997). "Quasi-periodic light variations in four Herbig Ae/Be stars". Pis'ma Astron. Zh 23 (6): 799–810. Bibcode: 1997AstL...23..799M. https://adsabs.harvard.edu/pdf/1997AstL...23..799M. Retrieved 27 December 2021.
6. ↑ Choudhary, A.; Stecklum, B.; Linz, Hendrik (2016). "Hubble imaging of V1331 Cygni: proper motion study of its circumstellar structures". Astronomy & Astrophysics 590: A106. doi:10.1051/0004-6361/201527547. Bibcode: 2016A&A...590A.106C.
7. ↑ 7.0 7.1 "V1331 Cyg". AAVSO. https://www.aavso.org/vsx/index.php?view=detail.top&oid=12251.
8. ↑ GCVSTypes. "GCVS Variability Types". Sternberg Astronomical Institute. http://www.sai.msu.su/gcvs/gcvs/vartype.htm.
9. ↑ 9.0 9.1 Hamilton, Joshua R. (June 2021). "Light Curve Analysis of 185 YSOs: New Periods Discovered for 9 Stars". Journal of the American Association of Variable Star Observers 49 (1): 49–57. Bibcode: 2021JAVSO..49...49H. https://ui.adsabs.harvard.edu/abs/2021JAVSO..49...49H. Retrieved 22 December 2021.
10. ↑ Ismailov, N. Z. (April 2005). "A new classification scheme for T Tauri light curves". Astronomy Reports 49 (4): 309–315. doi:10.1134/1.1898408. Bibcode: 2005ARep...49..309I. https://link.springer.com/article/10.1134/1.1898408. Retrieved 22 December 2021.

* v
* t
* e

Constellation of Cygnus

* List of stars in Cygnus

Stars|

| Bayer|

* α (Deneb)
* β (Albireo)
* γ (Sadr)
* δ (Fawaris)
* ε (Aljanah)
* ζ
* η
* θ
* ι1
* ι2
* κ
* λ
* μ
* ν
* ξ
* π1 (Azelfafage)
* π2
* ρ
* σ
* τ
* υ
* φ
* χ
* ψ
* ω1
* ω2
* P
* Q

|

Flamsteed|

* 2
* 4
* 8
* 9
* 14
* 15
* 16 (c)
* 17
* 20 (d)
* 22
* 23
* 26 (e)
* 27 (b1)
* 28 (b2)
* 29 (b3)
* 30
* 31
* 32
* 33
* 35
* 39
* 41
* 47
* 52
* 55
* 56
* 57
* 59 (f1)
* 61
* 63 (f2)
* 68 (A)
* 71 (g)
* 72
* 74
* 75

Variable|

* R
* T
* W
* RW
* SS
* TT
* BC
* BI
* CH
* KY
* V404
* V476
* V1057
* V1143
* V1191
* V1489
* V1500
* V1668
* V1974
* V2513

HR|

* 7633
* 7912
* 8193

HD|

* 185269
* 185435
* 187123
* 188753
* 191806

Gliese|

* 777
* 806
* 1245

Kepler|

* 5
* 6
* 11
* 15
* 16
* 17
* 18
* 22
* 23
* 27
* 28
* 29
* 31
* 32
* 33
* 34
* 35
* 36
* 39
* 40
* 41
* 42
* 43
* 44
* 45
* 47
* 51
* 56
* 61
* 66
* 67
* 68
* 69
* 70
* 78
* 80
* 84
* 86
* 89
* 107
* 182
* 186
* 223
* 371
* 419
* 432
* 451
* 452
* 1229
* 1520
* 1625

Other|

* AFGL 2591
* BD+40° 4210
* BD+43 3654
* Cygnus OB2 #8A
* Cygnus OB2 #12
* Cygnus X-1
* Cygnus X-3
* G 208-44
* G 208-45
* HAT-P-7
* HAT-P-11
* HAT-P-17
* KELT-9
* KIC 8462852
* KIC 9832227
* KIC 11026764
* KOI-74
* KOI-81
* KOI-256
* KPD 1930+2752
* MWC 349
* N6946-BH1
* NML Cygni
* PH1
* PSR J2032+4127
* W75N(B)-VLA2
* WISE J2000+3629
* WR 134
* WR 135
* WR 136
* WR 137
* WR 140
* WR 142
* WR 147
* WR 148

Former|

* 3

Star
clusters|

| Association|

* Cygnus OB2
* Cygnus OB7

|

Open|

* DR 6
* IC 5146
* Messier 29
* Messier 39
* NGC 6811
* NGC 6819
* NGC 6834
* NGC 6866
* NGC 6871
* NGC 6910

Molecular
clouds|

* Cygnus X (including DR 21)

Nebulae|

| Dark|

* Barnard 146
* Barnard 147
* IC 5146
* L1014

|

H II|

* NGC 6914
* North America Nebula
* Pelican Nebula
* Sadr Region
* Sh2-101
* Sh2-106

Planetary|

* Abell 78
* Egg Nebula
* IRAS 19475+3119
* Kronberger 61
* M1-92
* NGC 6826
* NGC 6881
* NGC 6884
* NGC 7008
* NGC 7026
* NGC 7027
* NGC 7048
* Soap Bubble Nebula

WR|

* Crescent Nebula

SNR|

* Cygnus Loop (including Veil Nebula)

Galaxies|

| NGC|

* 6801
* 6946
* 7013

|

Other|

* 3C 438
* Cygnus A

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/V1331 Cygni. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:V1331_Cygni&oldid=4131623"
*[RA:]: Right Ascension
*[Dec.:]: Declination
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template