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Latest Details
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| Name |
SY Her |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
16 59 22.27 +22 32 57.3 |
| Proper motion |
| RA: 6.461 +/- 0.040 mas/y | Dec: -20.085 +/- 0.060 mas/y | Source: Gaia DR1 |
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| Galactic coord. |
43.016 +33.635 |
Other names
(Internal only)
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Please note that aliases shown in grey link to obsolete records.
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AAVSO 1657+22 |
AN 177.1907 |
ASAS J170129+2228.7 |
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BD+22 3048 |
HIP 83304 |
HV 3018 |
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| Variability type |
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M |
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| Spectral type |
M1e-M6e |
| Mag. range |
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7.6 - 13.5 V |
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| Discoverer |
Henrietta Leavitt (1907) |
| Epoch |
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| Outburst |
-- |
| Period |
116.7 d |
| Rise/eclipse dur. |
49% (57 d) |
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Remarks
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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 |
G.Pojmanski, Acta Astronomica 52, 397, 2002. |
2002AcA....52..397P |
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2 |
Dunér, N. C.; Hartwig, E.; Muller, G., 1909, Benennung von neu entdeckten
veränderlichen Sternen |
1909AN....182..321D |
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3 |
T. Karlsson, Maxima of Mira stars |
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4 |
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 = 5.58 | H = 4.81 | K = 4.39 | J - K = 1.20 |
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AllWISE
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W1 = 4.09 | W2 = 3.41 | W3 = 2.96 | W4 = 2.59 | W1 - W2 = 0.68 | W3 - W4 = 0.37 |
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APASS-DR9
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B = 11.95 | V = 10.34 | g' = 11.08 | B - V = 1.60 |
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GALEX-DR5
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NUV = 19.94 |
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Images
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Supporting Documents
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Campaigns/Programs
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LPV Program
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Revision History
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Currently approved revision is checked. Click revision number to view details of that revision.
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