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Latest Details
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Log in to retrieve additional aliases from SIMBAD. |
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| Name |
eta Aql |
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| AAVSO UID |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
19 49 55.59 +00 52 33.4 |
| Proper motion |
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| Galactic coord. |
40.934 -13.073 |
Other names
(Internal only)
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Please note that aliases shown in grey link to obsolete records.
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55 Aql |
AAVSO 1947+00 |
ASAS J195229+0100.2 |
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BD+00 4337 |
HD 187929 |
HIP 97804 |
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HR 7570 |
IRC +00457 |
RAFGL 5437S |
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SAO 125159 |
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(Not logged in) Add name
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| Variability type |
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DCEP |
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| Spectral type |
F6Ib-G4Ib+B9.8V |
| Mag. range |
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3.49 - 4.30 V |
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| Discoverer |
Pigott (1784) |
| Epoch |
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| Outburst |
-- |
| Period |
7.17679 d |
| Rise/eclipse dur. |
32% (55.1 h) |
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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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Triple. Short period binary in HST data and B9.8V companion 0.66" away (2013AJ....146...93E). Combined range given. |
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2 |
GCVS Team |
P var. P = 7.176344d (JD2373000 - 95100), P = 7.176455D (JD2395100 - 2412100). Since JD2412100 - see Table. For the whole interval Max = 2442794.773 + 7.176735d*E + 2.18d*10**(-8)*E**2 [L.Szabados, Bud Mitt N76, 1980.]. In the UV band the light of a possible A0V comparion is apparent. |
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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 |
Evans, N.; Bond, H. E.; Schaefer, G. H.; et al., 2013, Binary Cepheids:
Separations and Mass Ratios in 5 M ⊙ Binaries |
2013AJ....146...93E |
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2 |
Photoelectric observations of Cepheids in UBV(RI)c (Berdnikov, 2008) |
2008yCat.2285....0B |
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3 |
G.Pojmanski, Acta Astronomica 52, 397, 2002. |
2002AcA....52..397P |
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Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues |
1997HIP...C......0E |
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Shobbrook, R. R., 1992, UBV(RI)c observations for 13 bright Cepheids |
1992MNRAS.255..486S |
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6 |
P.P.Parenago, Perem. Zvezdy 11, N4, 236, 1958. |
1956PZ.....11..236P |
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7 |
W. Ceraski, 1908, Nouvelles de la Science, Variétés |
1908BSAFR..22..241C |
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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 = 1.89 | K = 1.79 | J - K = 0.56 |
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AllWISE
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W3 = 1.90 | W4 = 1.82 | W3 - W4 = 0.07 |
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GALEX-DR5
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FUV = 12.39 | NUV = 12.69 | FUV - NUV = -0.30 |
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Images
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Supporting Documents
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Revision History
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