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Latest Details
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Name
  eps 1 Lyr B  
AAVSO UID
000-BCD-100 (No observations)  
Constellation
Lyra Sequence
J2000.0
18 44 20.31 +39 40 14.9  (281.08463 +39.67081) Search nearby
B1950.0 18 42 40.95 +39 37 05.8
Galactic coord. 68.849 +18.198
Other names

(Internal only)
BD+39 3509B CMC15 J184420.4+394013 GSC 03122-03438
HD 173582 HIP 91919 IRAS F18426+3937
SAO 67309 TIC 1715686796 TYC 3122-3438-1
UCAC4 649-062696 WDS J18443+3940B  
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Variability type
GDOR
Spectral type F0V
Mag. range
6.00 V (0.032)TESS
Discoverer I. Peretto, S. Lora, G. Peretto, G. Furlato, M. Barbieri (Marana Space Explorer Center)
Epoch
11 Aug 2019 (HJD 2458707.165) Ephemeris
Outburst --
Period 0.415 d  (10.0 h)
Rise/eclipse dur. --
Remarks
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1 Peretto, Ivo Combined amplitude of the visual binary eps 1 Lyr A and B given in the table. A has V= 5.05 and is 2.3" away. AB combined magnitude is V= 4.67. Other period: 0.468 d.
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References
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1 Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) 2014SPIE.9143E..20R
2 Perryman, M. A. C.; et al., 1997, The HIPPARCOS and TYCHO catalogues 1997HIP...C......0E
3 Abt, H. A.; Morrel, N. I., 1995, The Relation between Rotational Velocities
and Spectral Peculiarities among A-Type Stars
1995ApJS...99..135A
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Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 18 44 20.31 +39 40 14.9 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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4 Phase Plot second frequency Peretto, Ivo 2022-05-18 20:12 UTC
3 Phase Plot Peretto, Ivo 2022-05-18 20:11 UTC
2 JD Plot TESS-SPOC total Peretto, Ivo 2022-05-18 20:10 UTC
1 JD Plot TESS-SPOC first session Peretto, Ivo 2022-05-18 20:10 UTC
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Revision History
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1 Peretto, Ivo 2022-05-24 18:35 UTC Spectral type from 1995ApJS...99..135A. Magnitudes derived from the GCPD, BSC, Hipparcos and Gaia EDR3.