ASAS J043834+2053.5 (Eclipsing binary, Intrinsic variable)

RA: 04h 38m 34.39s, DE: +20° 53' 29.80" (69.6432900000, 20.8916100000)

Asas: ASAS 043834+2053.5, Asas: ASAS J043834+2053.5, AsasSnV: ASASSN-V J043834.37+205330.0, Ucac4: UCAC4 555-010491

Data:
  • Constellation: Tau
  • Variability type: ESD|DSCT|DSCTr|EC
  • Maximal brightness (Mag): 11.610 (V)
  • Minimum brightness (Mag): 11.810 (V)
  • Astrophysical interest: Wrong period, Wrong main epoch
  • Created by: admin
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Periodic elements:
  • Period (d): 0.415458000000000
  • Epoch (HJD): 2452622.04000
  • Secondary Epoch (HJD): 2452622.247729 (est.)
Change log:

9/2/2026, Filip Walter:

  • Astrophysical interest: Nothing → Wrong period, Wrong main epoch
  • Epoch: Null → 2452622.04
  • Period: Null → 0.415458
  • Variability type: Null → ESD|DSCT|DSCTr|EC
  • Photometric band: Null → V
  • Minimum brightness: Null → 11.81
  • Maximal brightness: Null → 11.61
  • Declination: 20.8916111108 → 20.89161
  • Right ascension: 69.6432916617 → 69.64329
  • Constellation: → Tau
  • Intrinsic variable: False → True
  • CI: Ucac4: Null → UCAC4 555-010491
  • CI: AsasSnV: Null → ASASSN-V J043834.37+205330.0
  • CI: Asas: Null → ASAS 043834+2053.5, ASAS J043834+2053.5

Chart
ASAS J043834+2053.5
Source: The STScI Digitized Sky Survey, FoV: 15 x 15 arcmin
Number of observations

3 x

Number of observers

1 x

Last observed before

2389 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2452622.04 + 0.415458 * E
S: M = 2452622.247729 + 0.415458 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline