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Latest Details
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Name
  GH Del  
AAVSO UID
000-BDQ-175 (43 observations)  
Constellation
Delphinus Sequence
J2000.0
20 23 48.24 +13 58 30.6  (305.95100 +13.97517) Search nearby
B1950.0 20 21 27.94 +13 48 46.7
Proper motion
RA: 1.6 +/- 8.2 mas/yDec: -7.6 +/- 6.4 mas/ySource: UCAC4
Galactic coord. 56.450 -13.215
Other names

(Internal only)
2MASS J20234824+1358305 ASASSN-V J202348.23+135831.7 CMC15 J202348.2+135830
SON 8287 UCAC4 520-128032  
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Variability type
RRD
Spectral type F
Mag. range
14.8 - 15.8 V
Discoverer --
Epoch
11 Aug 2019 (HJD 2458706.871) Ephemeris
Outburst --
Period 0.446375 d  (10.7130 h)
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Peretto, Ivo Fundamental mode period given in the table. First overtone mode elements HJD 2458800.562+0.330959 x E. Period ratio 0.7414.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
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 H.Gessner, I.Meinunger, VSS 7, H. 6, 607, 1973. 1973VeSon...7..603G
5 C.Hoffmeister, AN 288, H.2/3, 49, 1964. 1964AN....288...49H
External Links
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Location    Go   
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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 = 14.51H = 14.15K = 14.22J - K = 0.28
AllWISE W1 = 14.04W2 = 14.09W1 - W2 = -0.06
GALEX-DR5 NUV = 20.09
SDSS-DR12 u = 17.06g = 15.60r = 15.60i = 15.15z = 15.05u - g = 1.46r - i = 0.45
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 20 23 48.24 +13 58 30.6 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 Phase Plot First Overtone Peretto, Ivo 2026-01-13 18:02 UTC Phase Plot with ASAS-SN, ZTF and SSV-UAI-GRAV data.
1 Phase Plot Fundamental Mode Peretto, Ivo 2026-01-13 18:01 UTC Phase plot with ASAS-SN, ZTF and SSV-UAI-GRAV data.
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Peretto, Ivo 2025-12-29 18:02 UTC Position from Gaia DR3. Spectral type from 2023A&A...674A..26C. Type, range, period and epoch from ASAS-SN, ZTF and SSV-UAI-GRAV data.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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