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Name
  FASTT 1384  
AAVSO UID
--  
Constellation
Aquila Sequence
J2000.0
18 55 30.54 -00 54 39.9  (283.87725 -0.91108) Search nearby
B1950.0 18 52 55.66 -00 58 34.9
Proper motion
RA: 24.7 +/- 6.5 mas/yDec: 2.4 +/- 7.0 mas/ySource: UCAC4
Galactic coord. 32.585 -1.321
Other names

(Internal only)
2MASS J18553053-0054398 ASASSN-V J185530.50-005440.0 ATO J283.8746-00.9107
GDS_J1855305-005439 Gaia DR3 4265350782085309952 UCAC4 446-088881
USNO-B1.0 0890-0413664 WISE J185530.54-005439.8  
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Variability type
EA
Spectral type F
Mag. range
13.76 - 14.11 V
Discoverer A. A. Henden, R. C. Stone
Epoch
29 Sep 2023 (HJD 2460217.392) Ephemeris
Outburst --
Period 9.587365 d
Rise/eclipse dur. 3.8%  (8.74 h)
Remarks
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1 Mendez, Manuel J. V magnitudes transformed from Gaia DR3 have been used for the reference stars Gaia DR3 4265353737022825984 (V= 13.86) and Gaia DR3 4265350786465453696 (V= 13.92). ASAS-SN V magnitudes contaminated by Gaia DR3 265350786382699264 (V= 16.8; sep. 9"), Gaia DR3 4265350786465470976 (V= 16.5; sep. 9") and other fainter nearby stars. Range has been corrected. Primary eclipse might be the secondary.
2 1998AJ....115..296H 1 point (out of 11) 0.35 mag fainter than average.
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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 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
4 A.A. Henden, R.C. Stone, 1998, Astron. J. 115, 296 1998AJ....115..296H
External Links
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 11.56H = 11.25K = 11.13J - K = 0.42
AllWISE W1 = 11.04W2 = 11.14W3 = 10.01W1 - W2 = -0.10
APASS-DR9 B = 14.73V = 13.69g' = 14.28r' = 13.37i' = 12.93B - V = 1.04
Images
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Supporting Documents
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2 Primary eclipse detail Mendez, Manuel J. 2025-01-03 11:42 UTC FASTT 1384 primary eclipse LC with Méndez, ASAS-SN and ZTF data
1 Phase plot Mendez, Manuel J. 2025-01-03 11:40 UTC FASTT 1384 LC with Méndez, ASAS-SN and ZTF data
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Revision History
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2 Mendez, Manuel J. 2024-12-21 14:21 UTC Gaia DR3 position. Spectral type from Gaia DR3. Variable type and epoch from MQZ data. Period and range from MQZ and ZTF data.
1 Admin, VSX 2007-03-23 19:51 UTC Preserved original object data.