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Struve 2398
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Star Struve 2398

Binary star Struve 2398 is located 11 light years away from the Sun. It consists of 2 red dwarf stars. There are multiple known exoplanets in this system.
Sun distance
11 light years
galaxy map

Struve 2398 A

Red dwarf (spectral class M3 V)
flare star

Location

Ascension iconRight ascension: 18h 42m 43.944s
Declination iconDeclination: 59° 38' 18.088'' (northern hemisphere)
Parallax iconParallax: 283.84
Distance iconSun distance: 11.491 ly | 3.5 pc

Basic characteristic

icon weight
Mass: 33.4 % M Sun | 350 M Jupiter
radius icon
Size: 35 % R Sun | 3.5 R Jupiter
temperature iconTemperature: 3392 K | 0.59 T Sun
time iconAge: 3 billions years | 0.65 Sun
luminosity iconLuminosity: 0.039 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).

Struve 2398 B

Red dwarf (spectral class M3.5 V)
flare star

Basic characteristic

icon weight
Mass: 24.8 % M Sun | 260 M Jupiter
radius icon
Size: 27 % R Sun | 2.7 R Jupiter
temperature iconTemperature: 3334 K | 0.58 T Sun
time iconAge: 2.4 billions years | 0.52 Sun
luminosity iconLuminosity: 0.021 L Sun

2 exoplanets

 Struve 2398 B b 0.26 AU 15.7 M⊕ 91.3 days
Struve 2398 B c 0.43 AU 13.1 M⊕ 192.4 days

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 Struve 2398
      Struve 2398 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
G 227-047, HD 173740, HIP 91772, LHS 91772., Gliese 725, G 227-046, HD 173739, HIP 91768, LHS 58, Vyssotsky 184, ADS 11632, BD +59°1915, GCTP 4330.00 A/B, Gaia EDR3 2154880616774131840
External sources
simbad icon
Simbad database (HD 173740)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2154880616774131712)
Archive from the Gaia mission
Closest stars

 Gliese 687
 0.4 M☉ 4.2 ly

Gliese 1245
 0.11 M☉ 5.7 ly

61 Cygni
 0.7 M☉ 6.1 ly

Kruger 60
 0.27 M☉ 6.2 ly

Sigma Draconis
 0.85 M☉ 7.9 ly
3D map of stellar neighborhood
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