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Latest Details
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Name
  V6818 Sgr  
AAVSO UID
--  
Constellation
Sagittarius Sequence
J2000.0
18 03 35.22 -30 01 24.9  (270.89676 -30.02360) Search nearby
B1950.0 18 00 22.88 -30 01 33.6
Galactic coord. 1.036 -3.924
Other names

(Internal only)
MACHO 119.20221.586 NGC6522 V2 OGLE BLG190.6.72069
OGLE BLG513.11.133192 OGLE BUL_SC45_256663 OGLE BWC V25
OGLE bul_sc45_i_256663 OGLE-BLG-RRLYR-12117 [B84] 60
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Variability type
RRAB/BL
Spectral type --
Mag. range
15.35 - 16.02 Ic
Discoverer --
Epoch
13 Mar 2012 (HJD 2456000.198) Ephemeris
Outburst --
Period 0.47411451 d  (11.378748 h)
Rise/eclipse dur. 21%  (2.3895 h)
Remarks
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1 2006ApJ...651..197C Blazhko star.
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References
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1 Samus, N. N.; et al., 2024, The 86th Name-List of Variable Stars. Globular
Clusters (Fourth Part) and Novae		 2024PZ.....44....8S
2 I. Soszynski et al., 2011, Acta Astron. 61, 1 (Chart) 2011AcA....61....1S
3 I. Soszynski et al., 2011, Acta Astron. 61, 1 (online I data) 2011AcA....61....1S
4 I. Soszynski et al., 2011, Acta Astron. 61, 1 (online V data) 2011AcA....61....1S
5 I. Soszynski et al., 2011, Acta Astron. 61, 1 2011AcA....61....1S
6 A. Kunder, P. Popowski, K.H. Cook, B. Chaboyer, 2008, AJ 135, 631 2008AJ....135..631K
7 Collinge M.J., Sumi T., Fabrycky D., 2006, ApJ 651, 197 2006ApJ...651..197C
8 M.K. Szymanski, 2005, Acta Astron. 55, 43 (online data) 2005AcA....55...43S
9 R.A. Allsman, T.S. Axelrod, 2001, arXiv:astro-ph/0108444 2001astro.ph..8444A
External Links
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Images
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Supporting Documents
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Revision History
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5 Otero, Sebastian Alberto 2026-01-27 10:16 UTC Primary name, period, epoch, rise duration and range from 2024PZ.....44....8S. Gaia DR3 position.
4 Otero, Sebastian Alberto 2019-09-27 23:47 UTC Primary name, period, epoch, magnitude and amplitude from 2011AcA....61..285S (2018 version).
3 Admin, VSX 2015-12-19 02:43 UTC Updated variability type to indicate Blazhko effect.
2 Admin, VSX 2011-06-08 03:09 UTC Update from [2011AcA....61....1S].
1 Admin, VSX 2007-03-23 20:01 UTC Initial upload.

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