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Details for Revision 3
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Name
  FM Sgr  
AAVSO UID
000-BCB-854 (2827 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 17 18.26 -23 38 27.9  (274.32608 -23.64108) Search nearby
B1950.0 18 14 15.34 -23 39 36.8
Galactic coord. 8.118 -3.547
Other names

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AAVSO 1811-23 Downes FM Sgr HV 3994
N Sgr 1926 Nova Sagittarii 1926 Nova Sgr 1926
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Variability type
NA
Spectral type --
Mag. range
8.2: - 16.5 p
Discoverer A. J. Cannon
Epoch
30 Jul 1926 (HJD 2424727)
Outburst 1926
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Uncertain identification. Downes et al. chart is centered at the position of Gaia DR3 4065603471127909504 (18 17 18.05 -23 38 27.3, J2000.0), G= 19.1; V= 19.5. That star seems to be too faint for a nova and it is 3" to the WNW of the star identified as FM Sgr in the GCVS (at 18 17 18.21 -23 38 28.2, J2000.0), which has G= 17.4; V= 17.8. Remark in 1927BHarO.843....1C says: "On plates taken with the 24-inch Bruce telescope, there is a star between the 16th and 17th mag.which may coincide with the nova. A star of the 14th mag. follows the faint star 3s and is in nearly the same declination.". No such a pair can be found in the area in Pan-STARRS1 images other than the two stars currently identified as the nova in the two sources mentioned above, but their B magnitudes are 4 mag. fainter than the values given in 1927BHarO.843....1C, so it is not possible to confirm the Downes et al ID.
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References
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1 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
2 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
3 F.M.Bateson, A.F.Jones, I.Stranson, Charts for Southern Variables. ser.4,
1967-68.
--
4 A.J.Cannon, HB N843, 1927. 1927BHarO.843....1C
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Campaigns/Programs
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Revision History
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4 Otero, Sebastian Alberto 2025-03-09 04:25 UTC Remark about identification added. Minimum magnitude form Pan-STARRS1. Gaia DR3 position.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2007-03-23 19:52 UTC Discoverer added.
1 Admin, VSX 2005-12-18 01:33 UTC Initial database population.