HAT-P-33b

HAT-P-33b
Discovery
Discovered byHartman et al.[1]
Discovery siteHATNet (FLWO)/Keck[1]
Discovery datePublished June 6, 2011[2]
transit method[1]
Orbital characteristics
0.0505±0.0018 AU
Eccentricity0.180+0.11
−0.096
[3]
3.47447472±0.00000088[3] d
Inclination88.2+1.2
−1.3
[3]
2457046.20+0.22
−0.23
[3]
88+33
−34
[3]
Semi-amplitude78±12[3]
StarHAT-P-33 (GSC 02461-00988)[4]
Physical characteristics
1.87+0.26
−0.20
[3] RJ
Mass0.72+0.13
−0.12
[3] MJ
Mean density
0.134+0.053
−0.042
g cm−3
2.70+0.10
−0.11
m/s²
Temperature1920+140
−120
[3]

HAT-P-33b is a planet in the orbit of HAT-P-33, which lies 1,310 light years away from Earth. Its discovery was reported in June 2011, although it was suspected to be a planet as early as 2004. The planet is about three-fourths the mass of Jupiter, but is almost eighty percent larger than Jupiter is; this inflation has, as with the discovery of similar planets WASP-17b and HAT-P-32b, raised the question of what (other than temperature) causes these planets to become so large.[1]

HAT-P-33b was difficult to confirm because its star experiences high jitter, which disrupted the ability to obtain accurate measurements. As such, a greater number of radial velocity observations were collected to make the confirmation, although it was later determined that HAT-P-33b could not be determined using the radial velocity method. The planet's confirmation came about after the planet's light curve was collected, and the Blendanal process ruled out most false positive scenarios.

  1. ^ a b c d Cite error: The named reference Hartman2011 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference ArXiv was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i Cite error: The named reference Wang2017 was invoked but never defined (see the help page).
  4. ^ "HAT-P-33". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 April 2018.