Milky Way Galaxy Atlas


There are currently 98 stars and 23 planets listed from 201 to 400 light years from our Solar System. Planet Orbitar is the most notable planet within the 201 to 400 light year planet list. It orbits its star in the habitable zone. It is a Jovian planet, but has the possibility of a having a habitable moon orbiting it. Orbitar orbits the star 42 Draconis.

Planet Note: Planets have been categorized according to mass, diameter, and temperature. However, these three criteria are still subject to change since data is preliminary and incomplete. Some planets also have a calculated ESC. Several criteria are used to calculate a Planet's ESC, or Earth Similarity Class. Some scientists call this the Earth Simiarlity Index, or ESI. ESC is an indicator of how "Earth-like" a planet may be, based upon the following criteria: whether a planet is in the habitable zone of their star (the area where liquid water could exist), if the planet is tidally locked (one side always faces its star), if the planet is subjected to intense solar flares from its parent star, size class, mass, density, diameter, atmospheric pressure, atmospheric composition, average global temperature, and whether it has liquid water. Most planets that are listed will not have a calculated ESC due to incomplete data. ESC does not nessarily indicate that a planet is "habitable" or can support life as we know it. ESC only gives a general indication about what type of planet it may be according to currently available data.

In addition, any planet that has a green background, is located within the "habitable zone" of that star. The habitable zone of a star is defined as the area around a star where liquid water could possibly reside on a planet, given that the planet has sufficient atmospheric pressure and a temperature that allows for liquid water. It does not indicate that a planet will be "habitable" just because it's located within that star's habitable zone. Also, any planet that has a red background, is located in the
habitable zone, however, the planet is bombarded by intense solar flares from its parent star.

Star Types

Epsilon
Bootes

203.0000
K0II | A2V

















Zaurak

203.0000
M0III
Proxima Centauri (M5.5 Red Star)
















Alpha
Lynx

203.0000
K7III

















Homam

204.0000
B8V

















Epsilon
Lepus

213.0000
K4III

















Gamma
Hydrus

214.0000
M2III

















Kepler
37

215.0000
G8V

b
Kepler 37 b (Very Hot Mercurian) ESI Unknown
0.1003 AU
c
Kepler 37 c (Terran) ESI Unknown
0.1368 AU
d
Kepler 37 d (Hot Super Terran) ESI Unknown
0.2076 AU
e
?
0.2508 AU












BD-10
3166

215.2620
K3V

b
BD-10 3166 b (Jovian) ESI Unknown
0.043 AU















Nekkar

225.0000
G8IIIa

















Nunki

228.0000
B2.5V

















Schedar

228.0000
K0IIIa

















Tejat
Posterior

230.0000
M3III

















Tania
Australis

230.0000
M0III

















Gamma
Phoenix

234.0000
M0III

















18
Delphini

238.4200
G6III

Arion
Arion (Jovian) ESI Unknown
2.60 AU















Phi
Sagittarii

239.0000
B8.5III

















Haedus
II

243.0000
B3V

















Gamma
Perseus

243.0000
G8III | A2V

















24
Sextantis

243.9640
K1

b
24 Sextantis b (Jovian) ESI Unknown
1.333 AU
c
24 Sextantis c (Jovian) ESI Unknown
2.08 AU














Epsilon
Leonis

247.0000
G1II

















Menkar

249.0000
M1.5IIIa

















Veritate

249.1830
K0III

Spe
Spe (Jovian) ESI Unknown
0.830 AU















Bellatrix

250.0000
B2III
















4
Ursae
Majoris

256.0320
K2III

b
4 Ursae Majoris b (Jovian) ESI Unknown
0.870 AU















Gamma
Sagitta

258.0000
M0III

















Spica

260.0000
B1III | B2V

















Phaet

261.0000
B7IV

















75
Cetus

265.8170
G3III

b
75 Cetus b (Jovian) ESI Unknown
2.1 AU















Alpha
Arae

270.0000
B2Vne

















Adhafera

274.0000
F0III

















Alpha
Telescopii

278.0000
B3IV

















Mimosa

280.0000
B0.5III | B2V

















Theta
Aquilae

286.0000
B9.5III | B9.5III

















Brachiam

288.0000
M3III

















Altarf

290.0000
K4III

b
Altarf b (Jovian) ESI Unknown
1.70 AU















HAT
P-17

292.5000
K

b
HAT P-17 b (Extremley Hot Jovian) ESI Unknown
0.0882 AU
c
HAT P-17 c (Freezing Jovian) ESI Unknown
2.75 AU














Kepler
445

293.5400
M4

b
Kepler 445 b (Super Terran) ESI Unknown
0.1020 AU
c
Kepler 445 c (Super Terran) ESI Unknown
0.141 AU
d
Kepler 445 d (Super Terran) ESI Unknown
0.200 AU













Sargas

300.0000
F0II

















Eta
Centauri

306.0000
B1.5Vne

















Rho
Perseus

308.0000
M4II

















Canopus

310.0000
A9II

















Alpha
Musca

315.0000
B2IV

















81
Cetus

317.0230
G5III

b
81 Cetus b (Jovian) ESI Unknown
2.5 AU















42
Draconis

317.3490
K1.5III

Orbitar
42 Draconis b (Jovian) ESI Unknown
1.190 AU















Minkar

318.0000
K2III

















Acrux

320.0000
B0.5IV | B1V

















Dabih

328.0000
K0II | B8V | A0III | ?

















Nodus I

330.0000
B6III



















Gamma
Velorum



336.0000
WC8 | 07.5III | F0 | F0
















Beta
Musca

340.0000
B2V | B3V

















Delta
Crux

345.0000
B2IV

















Kaus
Media

348.0000
K3III



















Almach



350.0000
K3IIb | B | B | A
















Beta
Centauri

350.0000
B1III | B1III | B1V

















Rasalgethi

360.0000
M5lb | G8III | A9IV
















11
Comae
Berenices

360.7280
K0III

b
11 Comae Berenices b (Jovian) ESI Unknown
1.29 AU















Furud

362.0000
B2.5V

















Zeta
Ophiuchus

366.0000
O9.5V

















Nu
Puppis

370.0000
B8III

















HIP
11952

375.0000
F2V

















Pi
Herculis

377.0000
K3II

















Rastaban

380.0000
G2II | ?

















Propus

380.0000
M2IIIa | G0III

















Kappa
Centaurus

380.0000
B2IV

















Zeta
Centaurus

382.0000
B2.5IV

















Beta
Lupus

383.0000
B2III

















Alnitak

387.0000
O9.5lab | B1IV | B0III
















11
Ursae
Minoris

389.7560
K4III

b
11 Ursae Minoris b (Jovian) ESI Unknown
1.54 AU















Algenib

390.0000
B2IV

















Atria

391.0000
K2IIb

















Kepler
446

391.3900
M4

b
Kepler 446 b (Super Terran) ESI Unknown
0.067 AU
c
Kepler 446 c (Terran) ESI Unknown
0.104 AU
d
Kepler 446 d (Super Terran) ESI Unknown
0.147 AU













Tarazed

395.0000
K3II

















HD
100655

397.9100
G9III

b
HD 100655 b (Extremely Hot Jovian) ESI Unknown
0.76 AU















Alula
Borealis

399.0000
K3III

















Graffias

400.0000
B1V | B1V | ? | ? | ? | ?

















Kepler
78

400.0000
G

Hell Planet
Kepler 78 b - Hell Planet (Inferno Terran) ESI Unknown
0.01 AU