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Name
  V1421 Sgr  
AAVSO UID
000-BFF-855 (No observations)  
Constellation
Sagittarius Sequence
J2000.0
18 03 19.40 -29 55 19.0  (270.83083 -29.92194) Search nearby
B1950.0 18 00 07.22 -29 55 26.5
Galactic coord. 1.097 -3.825
Other names

(Internal only)
CMC15 J180319.3-295519 Gaia DR3 4050204020419815808 UGPS J180319.35-295519.4
VVV J180319.35-295519.40 XMMOM J180319.4-295519  
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Variability type
RR:
Spectral type --
Mag. range
18.0 - 18.5 p
Discoverer --
Epoch
30 May 1946 (HJD 2431970.911) Ephemeris
Outburst --
Period 0.355: d  (8.5 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Charts in 1955PZ.....10..337G and 1956PZ.....11..268G point to Gaia DR3 4050204020419815808, but that star has too red colors (V-Ic= 1.48) and it is a K-type star in 2023A&A...674A..26C, so it is not an RR Lyrae candidate as stated in 1955PZ.....10..337G. It hasn't been detected as variable by OGLE and Gaia. SIMBAD points to Gaia DR3 4050204020419795712, another K-type star 13" to the E, not identified as variable by OGLE and Gaia either. Likely candidate is OGLE-BLG-ECL-274509 = Gaia DR3 4050204016233630336, an EW with P= 0.5673996 d., 18" to the S from the star marked in the charts and 21" away to the SSW from the SIMBAD candidate. This star has a range Ic= 17.54 - 18.02; G= 18.28 - 18.82.
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References
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1 Creevey, O. L.; et al., 2023, Gaia Data Release 3: Astrophysical parameters
inference system (Apsis) I -- methods and content overview
2023A&A...674A..26C
2 Szymanski, 2005, Acta Astron. 55, 43 (online data) 2005AcA....55...43S
3 Gaposchkin, S. I., 1956, Observations of 285 variable stars towards the
galactic nucleus
1956PZ.....11..268G
4 S.I.Gaposchkin, Perem. Zvezdy 10, N6, 1956. --
5 Gaposchkin, S. I., 1955, 285 Variable Stars Towards the Galactic Center 1955PZ.....10..337G
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2025-03-07 19:46 UTC Remark about identification added. Gaia DR3 position. Spectral type from 2023A&A...674A..26C.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.