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Latest Details
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| Name |
SW Lac |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
22 51 22.62 +37 40 18.9 |
| Proper motion |
| RA: 83.866 +/- 0.113 mas/y | Dec: 10.068 +/- 0.082 mas/y | Source: Gaia DR1 |
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| Galactic coord. |
98.681 -19.326 |
Other names
(Internal only)
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1RXS J225341.8+375617 |
AAVSO 2249+37 |
AN 17.1918 |
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ASASSN-V J225341.60+375619.0 |
BD+37 4717 |
HD 216598 |
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HIP 113052 |
HV 3435 |
SAO 72820 |
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| Variability type |
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EW/RS |
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| Spectral type |
G8Vp+G8Vp |
| Mag. range |
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8.51 - 9.49 V |
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| Discoverer |
Henrietta Leavitt (1913) |
| Epoch |
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| Outburst |
-- |
| Period |
0.3207152 d (7.69716 h) |
| Rise/eclipse dur. |
-- |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Otero, Sebastian Alberto
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Variable amplitude due to spots.In Hipparcos data range was V= 8.66 - 9.45. In three seasons between 2001 and 2003 the total range was V= 8.54 - 9.49 (2004A&A...420.1039A) |
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2 |
GCVS Team |
Min II 9.31. P var. Min I = 2418943.712 + 0.32071236d*E (JD2410000 - 19990); Min I = 2420038.621 + 0.32071510d*E (JD2419990 - 25210); Min I = 2430996.525 + 0.32071665d*E (JD2425210 - 33690); Min I = 2436046.5634 + 0.32072132d*E (JD2433690 - 36755) [A.Purgathofer, F.Prochazka, Wien Mitt 13, N10, 151, 1967.]; Min I = 2437572.5723 + 0.32072811d*E (JD2436755 - 40000) [B.B.Bookmyer, AJ 70, 415, 1965.]; Min I = 2440467.4592 + 0.32072480d*E (JD2440110 - 40500) [I.Semeniuk, AA 21, N1, 49, 1971.]; Min I = 2441249.3737 + 0.3207197d*E (JD2440500 - 41600); [General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N. Kholopov et al.]; Min I = 2442697.4039 + 0.3207144d*E (JD2441600 - 43100) [S.Frasinska, J.M.Kreiner, IBVS N1285, 1977.]; Min I = 2443459.7476 + 0.3207216d*E (JD2443100 - 44400) [D.R.Faulkner, B.B.Bookmyer, IBVS N1503, 1978.]; Min I = 2444856.8064 + 0.3207184d*E (JD2444400 - 44900) [General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N. Kholopov et al.]; since JD2444900 - see Table. Shape of the light curve, depths of minima and heights of maxima vary. |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Bob Nelson's O-C files, 2016 |
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2 |
Albayrak, B., et al., 2004, Modeling the changing spot features of SW
Lacertae: A three year study |
2004A&A...420.1039A |
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3 |
F.W.Wright, HA 89, N10, 1937. |
1932AnHar..89..171W |
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Hartwig, E., 1922, Benennung von neu entdeckten veraenderlichen Sternen |
1922AN....215..185H |
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5 |
General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al. |
-- |
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External Links
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Location
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Catalog Data
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Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
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2MASS
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J = 7.21 | H = 6.82 | K = 6.70 | J - K = 0.51 |
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AllWISE
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W1 = 6.80 | W2 = 6.80 | W3 = 6.77 | W4 = 6.64 | W1 - W2 = 0.00 | W3 - W4 = 0.13 |
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APASS-DR9
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B = 9.79 | V = 8.96 | g' = 9.71 | r' = 8.67 | i' = 8.48 | B - V = 0.83 |
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Images
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Supporting Documents
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Revision History
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