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Name
  pi 1 Gru  
AAVSO UID
000-BDR-092 (4065 observations)  
Constellation
Grus Sequence
J2000.0
22 22 44.18 -45 56 52.5  (335.68408 -45.94792) Search nearby
B1950.0 22 19 41.33 -46 12 02.5
Proper motion
RA: 28.48 +/- 0.94 mas/yDec: -12.14 +/- 0.60 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 350.282 -55.164
Other names

(Internal only)
pi Gru 1 ASAS 222244-4556.9 CD-46 14292
CPD-46 10395 HD 212087 HIP 110478
HR 8521 SAO 231105  
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Variability type
SRB
Spectral type S5
Mag. range
5.31 - 7.01 V
Discoverer --
Epoch
08 May 2007 (HJD 2454229.0) Ephemeris
Outburst --
Period 195.5 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto B-V= 1.9 - 2.3. Other period is 128 d.
2 GCVS Team VB A (B 10.9m, G0V, 2.7", 202deg).
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References
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1 V. Tabur, T.R. Bedding, L.L. Kiss, T.T. Moon, B. Szeidl, H. Kjeldsen, 2009,
arXiv:0908.3228v1 [astro-ph.SR]
2009arXiv0908.3228T
2 The All Sky Automated Survey 2002AcA....52..397P
3 O.J.Eggen, AJ 88, N2, 190, 1983. 1983AJ.....88..190E
External Links
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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.
APASS-DR9 B = 8.97V = 6.73g' = 7.81r' = 5.87B - V = 2.24
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2011-06-20 18:37 UTC Phase plot combining ASAS-3 and PEP(V) data from Terry Moon.
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Campaigns/Programs
 Binocular program
Revision History
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3 Otero, Sebastian Alberto 2011-06-20 18:37 UTC Period, epoch and range improved from Terry Moon and ASAS-3 data.
2 Admin, VSX 2009-08-25 21:53 UTC Update from [2009arXiv0908.3228T].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.