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Name
  BLXC J183959.22-055530.5  
AAVSO UID
000-BQJ-714 (No observations)  
Constellation
Scutum Sequence
J2000.0
18 39 59.22 -05 55 30.5  (279.99675 -5.92514) Search nearby
B1950.0 18 37 18.63 -05 58 18.7
Galactic coord. 26.356 -0.164
Other names

(Internal only)
2MASS J18395923-0555303 BLVS 99 BLVS J183959.22-055530.5
Gaia DR3 4253463313414403584 LCVS 8 UGPS J183959.21-055530.6
URAT1 421-291576 XPM 168-0613647 ZTF J183959.22-055530.5
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Variability type
M
Spectral type M
Mag. range
17.6 - 19.8: r
Discoverer Bowen Lan and Xinyuan Chen
Epoch
24 Aug 2020 (HJD 2459086) Ephemeris
Outburst --
Period 431 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto VSP Note: 16.6 Vmag. star 2.7" to the SSE and 16.8 Vmag. star 5.9" to the NNE.
2 Lan, Bowen BP-RP= 7.52. J-K= 2.58.
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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 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive		 2019PASP..131a8003M
External Links
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Images
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Supporting Documents
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2 Phase Plot Lan, Bowen 2025-12-23 15:46 UTC Phase Plot for BLXC J183959.22-055530.5 data from ZTF r and ZTF i are used here.
1 Light Curve Lan, Bowen 2025-12-23 15:42 UTC Light Curve for BLXC J183959.22-055530.5 with ZTF data.
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Revision History
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1 Lan, Bowen 2026-01-08 17:38 UTC Gaia DR3 position. Spectral type from 2023A&A...674A..26C.

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