HAT-P-11b

HAT-P-11b / Kepler-3b
Size comparison of Neptune with HAT-P-11b (gray).
Discovery[1]
Discovered byBakos et al.
Discovery siteCambridge, Massachusetts
Discovery date2 January 2009
Transit (HATNet)
Orbital characteristics
Apastron0.0637+0.0020
−0.0019 AU
Periastron0.0413+0.0018
−0.0019 AU
0.05254+0.00064
−0.00066 AU
Eccentricity0.218+0.034
−0.031[2]
4.887802443+0.000000034
−0.000000030[3] d
Inclination89.05+0.15
−0.09[3]
2454957.15+0.17
−0.20[2]
19+14
−16[2]
Semi-amplitude10.42+0.64
−0.66[2]
StarHAT-P-11
Physical characteristics
4.36±0.06[3] R🜨
Mass23.4±1.5[2] ME
Mean density
1.44 g/cm3
1.20 g

HAT-P-11b (or Kepler-3b) is an extrasolar planet orbiting the star HAT-P-11. It was discovered by the HATNet Project team in 2009 using the transit method, and submitted for publication on 2 January 2009.

This planet is located approximately 123 light-years (38 pc) distant from Earth.[4]

  1. ^ Cite error: The named reference Bakos2010 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Yee2018 was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Huber2017 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).