CF Tuc (Eclipsing binary, Rotating variable)

RA: 00h 53m 07.77s, DE: -74° 39' 05.60" (13.2823800000, -74.6515555556)

Asas: ASAS J005307-7439.0, AsasSnV: ASASSN-V J005307.39-743905.7, Gaia: Gaia DR3 4684818698623432576, Gcvs: CF Tuc, Hd: HD 5303, Hip: HIP 4157, Tic: TIC 181233908, TwoMass: 2MASS J00530776-7439057, Tyc: TYC 9141-7799-1, Other: 1RXS J005307.5-743903, Other: CD-75 26, Other: CPD-75 68, Other: NSV 337, Other: SAO 255716, Other: SMC V0976

Data:
  • Constellation: Tuc
  • Variability type: EA/RS
  • Maximal brightness (Mag): 7.440 (V)
  • Minimum brightness (Mag): 7.800 (V)
  • Brightness in secondary minimum (Mag): 7.520 (V)
  • Astrophysical interest: Light time effect (LTE), Maxima asymmetry, Peaks on the light curve
  • Created: 6/1/1996
  • Created by: admin
Show list of observations >>
Periodic elements:
  • Period (d): 2.797617000000000
  • Epoch (HJD): 44160.52000
  • Secondary Epoch (HJD): 44161.9188085 (est.)
Change log:

11/10/2026, Filip Walter:

  • Variability type: EA → EA/RS
  • Right ascension: 13.282374995 → 13.28238
  • Name: CF → CF Tuc
  • Astrophysical interest: Nothing → Light time effect (LTE), Maxima asymmetry, Peaks on the light curve
  • Rotating variable: False → True
  • CI: Tyc: Null → TYC 9141-7799-1
  • CI: TwoMass: Null → 2MASS J00530776-7439057
  • CI: Tic: Null → TIC 181233908
  • CI: Other: Null → 1RXS J005307.5-743903, CD-75 26, CPD-75 68, NSV 337, SAO 255716, SMC V0976
  • CI: Hip: Null → HIP 4157
  • CI: Hd: Null → HD 5303
  • CI: Gcvs: Null → CF Tuc
  • CI: Gaia: Null → Gaia DR3 4684818698623432576
  • CI: AsasSnV: Null → ASASSN-V J005307.39-743905.7
  • CI: Asas: Null → ASAS J005307-7439.0

Chart
CF Tuc
Source: The STScI Digitized Sky Survey · DSS2 color composite, FoV: 15 x 15 arcmin
Number of observations

5 x

Number of observers

1 x

Last observed before

1 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2444160.52 + 2.797617 * E
S: M = 2444161.9188085 + 2.797617 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline