|
|
|
 Revise  New Search
|
|
Latest Details
|
|
|
Log in to retrieve additional aliases from SIMBAD. |
|
|
| Name |
AR Lac |
|
|
| AAVSO UID |
|
| Constellation |
|
| J2000.0 |
|
| B1950.0 |
22 06 39.49 +45 29 45.5 |
| Proper motion |
| RA: -52.302 +/- 0.021 mas/y | Dec: 46.949 +/- 0.021 mas/y | Source: Gaia DR1 |
|
| Galactic coord. |
95.557 -8.301 |
Other names
(Internal only)
|
|
1RXS J220840.9+454432 |
AAVSO 2204+45 |
AN 126.1907 |
|
ASASSN-V J220840.78+454431.7 |
BD+45 3813 |
HD 210334 |
|
HIP 109303 |
HR 8448 |
HV 2980 |
|
SAO 51684 |
X 22066+455 |
|
(Not logged in) Add name
|
| Variability type |
|
EA/AR/RS |
|
|
| Spectral type |
G2IV-V+K0IV |
| Mag. range |
|
6.08 - 6.77 V |
|
|
| Discoverer |
-- |
| Epoch |
|
| Outburst |
-- |
| Period |
1.983201 d |
| Rise/eclipse dur. |
15% (7.14 h) |
|
|
|
|
Remarks
|
|
|
Some references may be clicked to view in new window. Roll over index number to view submission details.
|
|
|
|
1 |
GCVS Team |
Min II 6.43; Min II - Min I = 0.5018P; dI = 0.045P; DII = 0.13P; dII = 0.00P. P var. Min I = 2426624.378 + 1.983244d*E (JD2415300 - 26800) [H.Ruegemer, AN 245, 39, 1931.]; Min I = 2429535.739 + 1.9832125d*E (JD2426800 - 36000) [C.R.Chambliss, PASP 88, 762, 1976.]; Min I = 2437018.414 + 1.983252d*E (JD2436000 - 37500) [General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N. Kholopov et al.]; since JD2437500 - see Table. There is a square term in the elements given in the Table: - 5.24d*10**(-9)*E**2. Shape of the light curve varies; there is a distortion wave with A up to 0.13mV migrating in the direction of decreasing phases with P ~2.5 yr. Spectrum investigations [R.F.Sanford, ApJ 113, 299, 1951., S.A.Naftilan, S.A.Drake, ApJ 216, 508, 1977., U.Kiziloglu, E.Derman, H.Ogelman, F.Tokdemir, AsAp 123, N1, 17, 1983.]. |
|
|
|
|
(Not logged in) Add remark
|
|
|
|
References
|
|
|
Click reference title/citation to view in new window. Roll over index number to view submission details.
|
|
|
|
1 |
C. Lloyd, 2018, Summer Eclipsing Binaries |
BAA-VSS Circular #176, 2018 |
|
2 |
Bob Nelson's O-C files, 2016 |
-- |
|
3 |
J.S. Nichols et al., 2010, ApJS 188, 473 (online data) |
2010ApJS..188..473N |
|
4 |
S.Evren, C.Ibanoglu, O.Tuemer, Z. Tunca, A.Y.Ertan, ApSS 95, N2, 401, 1983. |
1983Ap&SS..95..401E |
|
5 |
F.W.Wright, HA 89, N10, 1937. |
1932AnHar..89..171W |
|
|
|
|
|
|
External Links
|
|
|
Links open in a new window. Not all links may be valid for this particular target.
|
|
|
|
Location
|
Go
|
Select a Location for more details.
|
|
|
|
|
Catalog Data
|
|
|
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
|
|
2MASS
|
J = 5.08 | H = 4.33 | K = 4.27 | J - K = 0.81 |
|
AllWISE
|
W1 = 4.18 | W2 = 3.81 | W3 = 4.20 | W4 = 4.15 | W1 - W2 = 0.37 | W3 - W4 = 0.05 |
|
|
|
|
Images
|
|
|
Please review Digitized Sky Survey Acknowledgment and Copyright.
|
|
|
|
Image not downloaded. Click Retrieve Image to download and view. |
Retrieve image
|
|
|
|
|
Supporting Documents
|
|
|
|
|
There are currently no supporting documents on file for this star.
|
(Not logged in) Add document
|
|
|
|
|
Revision History
|
|
|
Currently approved revision is checked. Click revision number to view details of that revision.
|
|
|
|
|
|
|
