Planet 55 Cnc Ac

Detailed information about planet 55 Cnc Ac and its parameters.

Planet

Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference

  1. 24 mar. 05: Planet e challanged; Neptune-sized planet at ~ 0.8 AU? (Wisdom, 2005)
  2. 20 apr. 03: Planet in wide (a ~ 1065 AU) binary system (Eggenberger et al 2003)
  3. 13 Jun. 02 Periodicity at 44 d. could be due to stellar rotation, but the planet interpretation is more likely (Marcy et al 2002)
  4. 4 Dec. 01:From astrometry with HST (McGrath et al 2002), M < 30 MJ
  5. 22 Nov. 00: From astrometry (Han et al. 2000) claim a preliminary mass of 126 MJ and inclination of 179.6o
  6. Exhibits coherent variations in residual velocities consistent with additional companion.
    24 Jul. 00: the source of RV variation remains speculative, depending on completion of one full orbit (Fischer et al 2000).
  7. Possible second companion; see Butler et al. 1996, Jayawardhana et al. 2000.

Star

Primary component of a widely separated binary system (a = 1065 AUs) including a faint red dwarf companion star (55 Cnc B or rho1 Cnc B, spT M4.5V), it too exoplanet host.

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