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Latest Details
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| Name |
BI Cyg |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
20 19 29.14 +36 46 19.5 |
| Proper motion |
| RA: -0.4 +/- 1.3 mas/y | Dec: -4.1 +/- 2.9 mas/y | Source: UCAC4 |
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| Galactic coord. |
75.320 +0.112 |
Other names
(Internal only)
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2MASS J20212192+3655555 |
AAVSO 2017+36B |
AN 23.1919 |
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ASASSN-V J202121.89+365556.7 |
BD+36 4025 |
GSC 02684-00522 |
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IOMC 2684000059 |
IRAS 20194+3646 |
IRC +40408 |
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RAFGL 2559 |
TIC 13249363 |
TYC 2684-522-1 |
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WDS J20214+3656A |
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| Variability type |
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SRC |
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| Spectral type |
M4Iab |
| Mag. range |
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8.86 - 10.00 V |
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| Discoverer |
Thomas Espin (1920) |
| Epoch |
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| Outburst |
-- |
| Period |
800 d |
| Rise/eclipse dur. |
-- |
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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 |
Percy, J. R., 2020, Period Analysis of All-Sky Automated Survey for
Supernovae (ASAS-SN) Data on a Sample of “Irregular” Pulsating Red Giants |
2020JAVSO..48...50P |
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2 |
Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0 |
2017PASP..129j4502K |
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3 |
J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info) |
2012arXiv1210.0821A |
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4 |
J.G.Hagen, J.Stein, ASV VIII. |
1989eerz.book.....H |
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5 |
M.Beyer, Erg AN 12, N2, 1950. |
-- |
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6 |
Hartwig, E.; Muller, G., 1921, Benennung von neu entdeckten veraenderlichen
Sternen |
1921AN....212..353. |
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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 = 2.35 | H = 1.14 | K = 0.72 | J - K = 1.62 |
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AllWISE
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W3 = -1.73 | W4 = -3.28 | W3 - W4 = 1.55 |
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APASS-DR9
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B = 12.58 | V = 9.40 | g' = 10.95 | r' = 8.09 | i' = 5.92 | B - V = 3.19 |
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Images
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Supporting Documents
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Campaigns/Programs
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SNEWS Campaign
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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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