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Name
  d Ser A  
AAVSO UID
000-BCC-357 (3700 observations)  
Constellation
Serpens Sequence
J2000.0
18 27 12.51 +00 11 46.0  (276.80212 +0.19611) Search nearby
B1950.0 18 24 39.01 +00 09 53.3
Proper motion
RA: -3.67 +/- 0.61 mas/yDec: -8.61 +/- 0.54 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 30.337 +5.479
Other names

(Internal only)
59 Ser 59 Ser A AAVSO 1822+00
ADS 11353 A BD+00 3936 BD+00 3936A
CCDM J18272+0012AP EIC 8493 HD 169985
HIP 90441 HR 6918 IRAS 18246+0009
PMSC 18221+0008Aab SAO 123497 SBC7 683
SBC9 1055 STF 2316AP TYC 433-595-1
UCAC4 451-081070 WDS J18272+0012A WDS J18272+0012Aa,Ab
d Ser    
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Variability type
ELL
Spectral type A0V+A0V
Mag. range
5.33 - 5.34 V
Discoverer --
Epoch
18 Jun 2024 (HJD 2460479.973) Ephemeris
Outburst --
Period 1.8505 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Magnitude of Aa+Ab given in the table. The A0-type pair is the 1.85 d. ELL variable, with a G0III-type companion. AaAb period= 385 d. B is an F5V-type star (V= 7.62) 3.7" away. Combined AB magnitude V= 5.20.
2 GCVS Team ADS 11353 A (B 7.44m, SB?, F5V, 3.9", 320deg, 1983). VB (speckle-interferometric; 0.25", 157deg, 1976). SB (P1orb = 385d, P2orb = 1.8505205d).
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References
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1 Huang, C. X.; et al., 2020, Photometry of 10 Million Stars from the First
Two Years of TESS Full Frame Images: Part I		 2020RNAAS...4..204H
2 Catalogue of Stellar Spectral Classifications (Skiff, 2009-2022) 2014yCat....1.2023S
3 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
4 R.L.Walker, IBVS N2319, 1983. 1983IBVS.2319....1W
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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 = 4.01H = 3.66K = 3.39J - K = 0.62
AllWISE W1 = 3.39W2 = 3.10W3 = 3.31W4 = 3.29W1 - W2 = 0.29W3 - W4 = 0.02
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2024-12-15 02:32 UTC Phase plot with TESS QLP data.
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Revision History
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3 Otero, Sebastian Alberto 2024-12-15 02:30 UTC Spectral types from Skiff (2022). Range derived from Hipparcos and GCPD data. Type, period and epoch from TESS-QLP 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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