HAT-P-18 b (Exoplanet, Confirmed)

RA: 17h 05m 23.13s, DE: +33° 00' 46.80" (256.3463749950, 33.0130000000)

Data:
  • Constellation: Her
  • Brightness (Mag): 12.759
  • Transit depth (%): 2.15847573
  • Transit depth (Mag): 0.02319
  • Transit duration (m): 162.864
  • Planet radius (RJup): 0.955 +/- 0.032
  • Star radius (RSun): 0.717 +/- 0.026
  • Impact factor: 0.23 +/- 0.18
  • Created by: admin
  • Reference: 
    http://arxiv.org/abs/1007.4850
ephemerides: Kokori et al. 2021
Show list of observations >>
Orbital elements:
  • Period (d): 5.5080291 +/- 3E-07
  • Epoch (HJD): 2454715.0225 +/- 0.0002
  • Semimajor axis (AU): 0.0559 +/- 0.0007
  • Inclination (°): 88.8 +/- 0.3
Change log:

9/16/2026, Filip Walter:

  • Epoch error: Null → 0.0002
  • Epoch: 2457276.25646 → 2454715.0225
  • Period error: Null → 0.0000003
  • Period: 5.50803 → 5.5080291
  • Impact factor error: 0.06 → 0.18
  • Impact factor: 0.324 → 0.23
  • Star radius error: 0.037 → 0.026
  • Star radius: 0.749 → 0.717
  • Planet radius error: 0.052 → 0.032
  • Planet radius: 0.995 → 0.955
  • Transit duration: 162.9 → 162.864
  • Transit depth: 1.7 → 2.15847573

Chart
HAT-P-18
Source: The STScI Digitized Sky Survey, FoV: 15 x 15 arcmin
Number of transits

72 x

Number of observers

23 x

Last observed before

101 days

Transit-timing variations (TTV diagram)
Times of mid-transit
M = 2454715.0225 + 5.5080291 * E
ID HJDmid UTCmid Epoch O-C (d) Duration (min) Depth (mmag) Phot. band DQ Light curve Observer & Reference Note
Transit depth variations
Transit duration variations
Comments

Timeline