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Name
  AISV-ID J305.772+31.210  
AAVSO UID
000-BQD-016 (No observations)  
Constellation
Cygnus Sequence
J2000.0
20 23 05.19 +31 12 36.6  (305.77162 +31.21017) Search nearby
B1950.0 20 21 04.31 +31 02 54.3
Galactic coord. 70.819 -3.443
Other names

(Internal only)
2MASS J20230520+3112366 ATO J305.7716+31.2101 GSC2.3 N33Y000339
TIC 136553844 UCAC4 607-104695 URAT1 607-487535
USNO-A2.0 1200-15013833 USNO-B1.0 1212-0469631 XPM 242-0695136
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Variability type
EA/GS
Spectral type K
Mag. range
13.85 - 14.01 g
Discoverer Shuming Wang
Epoch
06 May 2024 (HJD 2460437) Ephemeris
Outburst --
Period 1675 d  (4.59 y)
Rise/eclipse dur. 8%  (19 weeks)
Remarks
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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
3 Tonry, J. L.; et al., 2018, ATLAS: A High-cadence All-sky Survey System 2018PASP..130f4505T
4 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
External Links
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Images
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Supporting Documents
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4 Phase plot primary minimum Wang, Shuming 2025-03-15 11:56 UTC Zoomed portion of the eclipse with ZTF and ASAS-SN data.
3 Phase plot Wang, Shuming 2025-03-15 11:20 UTC Phase plot with ZTF ATLAS and ASAS-SN data.
2 Target image Wang, Shuming 2025-02-11 13:20 UTC Pan-STARRS1 y/i/g image.
1 Light curve Wang, Shuming 2025-02-11 11:44 UTC Light curve with ZTF ATLAS and ASAS-SN data.
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Revision History
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1 Wang, Shuming 2025-03-17 15:58 UTC Gaia DR3 position. Spectral type from 2023A&A...674A..26C.