PP Lac (Eclipsing binary)

RA: 22h 42m 38.66s, DE: +53° 25' 02.80" (340.6610833333, 53.4174444438)

Data:
  • Constellation: Lac
  • Variability type: EW
  • Maximal brightness (Mag): 11.100 (P)
  • Minimum brightness (Mag): 12.000 (P)
  • Brightness in secondary minimum (Mag): 12.000 (P)
  • Astrophysical interest: Combination of more effects, Light time effect (LTE)
  • Created: 6/1/1996
  • Created by: admin
Show list of observations >>
Periodic elements:
  • Period (d): 0.401161300000000
  • Epoch (JD): 45595.43000
  • Secondary Epoch (JD): 45595.63100
Change log:

8/25/2025, Filip Walter:

  • Astrophysical interest: Nothing → Combination of more effects, Light time effect (LTE)

Chart
PP Lac
Source: The STScI Digitized Sky Survey
Number of observations

101 x

Number of observers

16 x

Last observed before

3 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2445595.43 + 0.4011613 * E
S: M = 2445595.631 + 0.4011613 * E
ID HJDmin UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline