IU Per (Eclipsing binary)

RA: 02h 59m 36.44s, DE: +43° 55' 19.30" (44.9018333283, 43.9220277771)

Data:

  • Constellation: Per
  • Variability type: EA
  • Maximal brightness (Mag): 10.500 (P)
  • Minimum brightness (Mag): 11.600 (P)
  • Brightness in secondary minimum (Mag): 10.500 (P)
  • Astrophysical interest: Possible period changes
  • Created: 6/1/1996
  • Created by: admin
Periodic elements:

  • Period (d): 0.857026000000000
  • Epoch (HJD): 45240.34400
  • Secondary Epoch (HJD): 45240.77300
Change log:

10/25/2025, Filip Walter:

  • Name: IU → IU Per
  • Astrophysical interest: Nothing → Possible period changes

Number of observations

16 x

Number of observers

7 x

Last observed before

158 days

O-C diagram
Times of minima / maxima - including records from the original O-C gateway  
P: M = 2445240.344 + 0.857026 * E
S: M = 2445240.773 + 0.857026 * E
ID HJDmin Error (+/-) UTCmin Epoch O-C (d) P/S Phot. band Observer Publication Note Instrument
Phase curve
Comments

Timeline