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Name
pi Aqr
AAVSO UID
Constellation
J2000.0
B1950.0
22 22 43.43 +01 07 23.0
Proper motion
Galactic coord.
66.007 -44.739
Other names(Internal only)
52 Aqr
1RXS J222517.0+012238
AAVSO 2220+00
ASASSN-V J222516.70+012239.6
BD+00 4872
HD 212571
HIP 110672
HR 8539
MWC 388
SAO 127520
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Variability type
GCAS
Spectral type
B1Ve
Mag. range
4.42 - 4.79 V
Discoverer
--
Epoch
Outburst
--
Period
--
Rise/eclipse dur.
--
Remarks
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1
2012IBVS.6023....1P
Orbital period 84.1d.
2
GCVS Team
The brightness increased by ~0.2m V in 1957 - 1975, the star became redder. Balmer continuum in emission. Rapid changes in emission lines and in polarization. Existence of a disk or a shell is possible.
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References
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1
Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
2017ARep...61...80S
2
E. Pollman, 2012, IBVS 6023
2012IBVS.6023....1P
3
Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues
1997HIP...C......0E
4
H.L.Nordh, S.G.Olofsson, AsAp 56, 117, 1977.
1977A&A....56..117N
External Links
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Location
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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 = 5.30 H = 5.37 K = 5.35 J - K = -0.05
AllWISE
W1 = 4.57 W2 = 3.99 W3 = 4.07 W4 = 3.60 W1 - W2 = 0.58 W3 - W4 = 0.47
Images
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Supporting Documents
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Revision History
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