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Name
  AISV-ID J294.812+32.164  
AAVSO UID
000-BQJ-366 (No observations)  
Constellation
Cygnus Sequence
J2000.0
19 39 14.89 +32 09 52.1  (294.81204 +32.16447) Search nearby
B1950.0 19 37 19.29 +32 02 55.3
Galactic coord. 66.699 +4.975
Other names

(Internal only)
2MASS J19391489+3209522 GSC2.3 N2GS052989 TIC 69907910
UCAC4 611-082377 URAT1 611-357606 USNO-A2.0 1200-12469573
USNO-B1.0 1221-0454470 XPM 244-0545559 ZTF J193914.88+320952.1
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Variability type
EA+HB:+BE:
Spectral type O
Mag. range
14.71 - 15.4 r
Discoverer Shuming Wang
Epoch
17 Jul 2018 (HJD 2458317.35) Ephemeris
Outburst --
Period 67.322 d
Rise/eclipse dur. 5%  (3.4 d)
Remarks
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1 Wang, Shuming Apsidal motion? Broad secondary minimum moving from phases 0.64 and 0.72 over the ZTF time span. Long-term magnitude changes (BE?). Eclipse amplitude 0.2 r. HB: amplitude 0.1 r. Long-term variability amplitude 0.4 r.
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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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4 Target image Wang, Shuming 2025-12-11 13:13 UTC Pan-STARRS1 y/i/g image.
3 Phase plot (EA) Wang, Shuming 2025-12-11 12:52 UTC Phase plot with ZTF data.
2 Zoomed light curve Wang, Shuming 2025-12-01 12:46 UTC Zoomed light curve with ZTF data from HJD 2458180 to HJD 2458840.
1 Light curve Wang, Shuming 2025-12-01 12:26 UTC Light curve with ZTF data.
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Revision History
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1 Wang, Shuming 2025-12-15 15:06 UTC Gaia DR3 position. Spectral type from 2023A&A...674A..26C.

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