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Latest Details
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Name
  GrAGVar002  
AAVSO UID
000-BPF-555 (No observations)  
Constellation
Cygnus Sequence
J2000.0
20 57 29.98 +31 25 02.6  (314.37492 +31.41739) Search nearby
B1950.0 20 55 25.45 +31 13 24.9
Galactic coord. 75.461 -9.168
Other names

(Internal only)
2MASS J20573000+3125025 ATO J314.3748+31.4173 WISEA J205730.01+312502.4
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Variability type
EW
Spectral type --
Mag. range
17.47 - 17.82 V
Discoverer A. Ciarnella (GrAG), M. Grassi (GrAG), G. Mazzacurati (GrAG), L. Balestrieri Cosimelli (GrAG)
Epoch
15 Nov 2021 (HJD 2459534.378) Ephemeris
Outburst --
Period 0.309827 d  (7.4358 h)
Rise/eclipse dur. --
Remarks
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1 Mazzacurati, Giorgio Uncertain identification. The range in the table is for the combined magnitudes of Gaia DR2 1864830617607276544 (V= 18.2, chosen as the variable star) and Gaia DR2 1864830617599091328 (V= 18.6; sep. 0.6”).
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References
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1 Heinze, A. N.; et al., 2018, A First Catalog of Variable Stars Measured by
the Asteroid Terrestrial-impact Last Alert System (ATLAS)		 2018AJ....156..241H
External Links
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Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 20 57 29.98 +31 25 02.6 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 Phase Plot Mazzacurati, Giorgio 2021-11-22 23:58 UTC Phase Plot
1 Field Mazzacurati, Giorgio 2021-11-21 12:24 UTC
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Revision History
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1 Mazzacurati, Giorgio 2021-11-23 15:29 UTC Period from 2018AJ....156..241H.

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