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Today is Thu May 2 2:21:28 CEST 2024JD 2460432.5149074
 

GEOS RR-Lyr database

Type star name:  
 

SW Aqr

 

GCVS data
GCVS number 40023
Variable star identification211517.85+000434.8

Coordinates:

RA/DEC (J2000.0) 318.8243745 0.0763333 degrees
Proper motion (RA/DEC) -0.042 -0.059 arc sec/year
Epoch of coordinates 2000
Reference for coordinates Hip

Variable star characteristics:

Type RRAB
magnitudes at max 10.37 , at min 11.68 (V)
Elements: 2452896.7 + 0.4593 E
M-m 11 %
spectrum A5-G1
reference for type [N0002] Pojmanski, G., 2005, The ASAS-3 Variable Star Catalog (http://www.astrouw.edu.pl/~gp/asas/asas.html
reference for finding chart [HIP ] The Hipparcos and Tycho Catalogues (European Space Agency, 1997), ESA SP-1200 (CDS Cat. I/239)

Remarks

[Fe/H] = -1.63.

Cross identification

AN 1908.0123
GSC 0528.01261
HV 03144
Hip 104930

Elements

By default the database elements are used in O-C calculation. If several elements are available, the user may choose one of them. A form allows the user to enter his/her own elements. If they are given they become the current elements until the button "Reset to database elements" is pressed.

Elements avalable in database:

2425097.3771 + 0.45930318 E (GCVS (Kholopov et al.; 1988-2006))
2452896.7 + 0.4593 E (GCVS (Samus et al.; 2011))

  Origin Period Quad. term  
Type Elements:  
  Or
 

Current elements: 2425097.3771 + 0.45930318 E

8 maximums


Symbol colors: green: photographic; yellow: visual; red: photoelectric; bleu: ccd; no color: unknown

Plot O-C as function of HJD Cycle number

Toggle period shift ON OFF

  HJD   Unc.   O-C   E   period   Ref.   Observer   meth.   comments  
    (day)     shift  
  457202.2093      0.0013      -0.129      -4284523      0      J.F. Le Borgne, 2015, pr. com.      Kenji Hirosawa      ccd      V filter     
  457215.5258      0.0011      -0.132      -4284494      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          
  457216.4465      0.0027      -0.130      -4284492      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          
  457221.4995      0.0015      -0.130      -4284481      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          
  457227.4701      0.0014      -0.130      -4284468      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          
  457230.6853      0.0012      -0.130      -4284461      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Chile      ccd          
  457239.4118      0.0016      -0.130      -4284442      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          
  457266.5097      0.0014      -0.131      -4284383      0      J.F. Le Borgne, 2015b, pr. com.      Tarot - Calern      ccd          

No image Access to Simbad data

Lightcurve from AAVSO data
Enter JD of beginning and end of lightcurve and click on the " AAVSO lightcurve " button.
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Today is Thu May 2 2:21:28 CEST 2024