55 Cancri d

55 Cancri d / Lipperhey
Radial velocity changes over time of 55 Cancri caused by the orbit of 55 Cancri d.
Discovery
Discovered byMarcy et al.
Discovery siteCalifornia, USA
Discovery dateJune 13, 2002
Radial velocity
Orbital characteristics
Apastron5.92 AU (886,000,000 km)
Periastron5.63 AU (842,000,000 km)
5.77 ± 0.11 AU (863,000,000 ± 16,000,000 km)[1]
Eccentricity0.025 ± 0.03[1]
5218 ± 230[1] d
14.29 y
2,452,500.6 ± 230[1]
181.3 ± 32[1]
Semi-amplitude46.85 ± 1.8[1]
Star55 Cancri A

55 Cancri d (abbreviated 55 Cnc d), formally named Lipperhey /ˈlɪpərh/, is an extrasolar planet in a long-period orbit around the Sun-like star 55 Cancri A. Located at a similar distance from its star as Jupiter is from the Sun, it is the fifth and outermost known planet in its planetary system. 55 Cancri d was discovered on June 13, 2002.

  1. ^ a b c d e f D.A. Fischer; et al. (March 2008). "Five Planets Orbiting 55 Cancri". Astrophysical Journal. 675 (1): 790–801. arXiv:0712.3917. Bibcode:2008ApJ...675..790F. doi:10.1086/525512. S2CID 17083836.