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Name
zet Gem
AAVSO UID
Constellation
J2000.0
B1950.0
07 01 08.64 +20 38 43.6
Proper motion
Galactic coord.
195.746 +11.903
Other names(Internal only)
43 Gem
AAVSO 0658+20
ADS 5742 A
BD+20 1687
HD 52973
HIP 34088
HR 2650
IRC +20169
Mekbuda
RAFGL 4552S
SAO 79031
WDS J07041+2034A
X 07011+206
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Variability type
DCEP
Spectral type
F7Ib-G3Ib
Mag. range
3.62 - 4.18 V
Discoverer
Johann Friedrich Julius Schmidt (1844)
Epoch
Outburst
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Period
10.149806 d
Rise/eclipse dur.
50% (5.0749 d)
Remarks
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1
Schmeer, Patrick
Gaia EDR3 parallax 3.07 ± 0.22 mas (distance 325 ± 25 pc).
2
GCVS Team
VB A (B 11.46m, 87", 84deg; C 7.56m, 97", 350deg). P var. Max = 2410640.42 + 10.15477d*E (JD2394600 - 2407150); Max = 2422366.187 + 10.15288d*E (JD2407150 - 22300); Max = 2426802.918 + 10.15172d*E (JD2422300 - 34500) [P.P.Parenago, Perem. Zvezdy 11, N4, 236, 1958. ]; since JD2434500 - see Table. All the observations are satisfied also by the elements: Max = 2443785.444 + 10.150135d*E - 5.24d*10**(-7)*E**2 [L.Szabados, Bud Mitt N77, 1981. ]. May by a DCEPS type variable.
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References
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1
Breitfelder, J.; et al., 2016, Observational calibration of the projection
2016arXiv160104727B
2
V.P.Zessewitsch, Variable Stars and Methods of Their Studies, (in russian)
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3
Henroteau, F., A study of zeta Geminorum, I.
1925PDO.....9..105H
4
Davis, K., Zeta Geminorum (Variable Star of the Month)
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5
General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
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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 = 2.38 H = 2.03 K = 2.14 J - K = 0.24
AllWISE
W3 = 2.08 W4 = 1.98 W3 - W4 = 0.10
Images
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Supporting Documents
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Revision History
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