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55 Cancri
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Star 55 Cancri

Binary star 55 Cancri is located 41 light years away from the Sun. It consists of a subgiant and a red dwarf. There are multiple known exoplanets in this system.
Sun distance
41 light years

55 Cancri A

Subgiant (spectral class K0IV-V)

Location

Ascension iconRight ascension: 8h 52m 35.228s
Declination iconDeclination: 28° 19' 47.219'' (northern hemisphere)
Parallax iconParallax: 79.448
Distance iconSun distance: 41.053 ly | 12.6 pc

Basic characteristic

icon weight
Mass: 96 % M Sun | 1006 M Jupiter
radius icon
Size: 96 % R Sun | 9.6 R Jupiter
temperature iconTemperature: 5320 K | 0.92 T Sun
time iconAge: 8 billions years | 1.74 Sun
luminosity iconLuminosity: 0.589 L Sun

5 exoplanets

55 Cancri A e 0.02 AU 8.6 M 1.9 R 0.7 days
55 Cancri A b 0.11 AU 262.3 M 14.7 days
55 Cancri A c 0.24 AU 54.3 M 44.4 days
55 Cancri A f 0.78 AU 49.3 M -
55 Cancri A d 5.45 AU 1227.1 M 4867 days

Photometry

Magnitude iconApparent magnitude (V): 6
Magnitude iconAbsolute magnitude (V): 5.4
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).

55 Cancri B

Red dwarf (spectral class M4.5V)

Basic characteristic

icon weight
Mass: 25.5 % M Sun | 267 M Jupiter
radius icon
Size: 27 % R Sun | 2.7 R Jupiter
temperature iconTemperature: 3320 K | 0.57 T Sun
luminosity iconLuminosity: 0.003 L Sun
(No known exoplanets yet)

Photometry

5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
More about 55 Cancri
      55 Cancri can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia. 
Other designations of this star
Copernicus, LHS 2062, LDS 6219A, GJ 324 A, Gliese 324, HD 75732, Rho1 Cancri, 55 Cnc, BD+28°1660, HIC 43587, HIP 43587, HR 3522, SAO 80585, rho01 Cnc, LFT 609, LTT 12310, NLTT 20414, TIC 332064670, TOI-1773, TYC 1949-2012-1, WISEA J085235.41+281948.5, Gaia EDR3 704967037090946688
External sources
icon study
A secondary atmosphere on the rocky exoplanet 55 Cancri e
Scientific study, Accepted: 08. 05. 2024
icon study
Investigating the visible phase curve variability of 55 Cnc e
Scientific study, Accepted: 12. 07. 2023
simbad icon
Simbad database (* rho01 Cnc B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 704966762213039488)
Archive from the Gaia mission
News from this star system
Article image:

Exoplanet 55 Cancri e has its orbit aligned with the stars equator

Closest stars

UCAC4 608-044702
- 5.1 ly

AZ Cancri
- 8.3 ly

2MASS J0825+2115
- 8.4 ly

Ross 92
- 9 ly

11 Leonis Minoris
0.96 M☉ 9 ly
3D map of stellar neighborhood
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