A planet is a celestial object that orbits a star.


A planet is an astronomical object orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause Thermonuclear Fusion, and has cleared its neighboring region of planetesimals (small celestial bodies). The term planet is ancient, with ties to history, astrology, science, mythology, and religion. Several planets in the Solar System can be seen with the naked eye. These were regarded by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union (IAU) officially adopted a resolution defining planets within the Solar System. This definition is controversial because it excludes many objects of planetary mass based on where or what they orbit. Although eight of the planetary bodies discovered before 1950 remain "planets" under the modern definition, some celestial bodies, such as Ceres, Pallas, Juno and Vesta (each an object in the solar asteroid belt), and Pluto (the first trans-Neptunian object discovered), that were once considered planets by the scientific community, are no longer viewed as such.

Stargate Designations


Most planets the Stargate goes to have their own name, but Stargate Command usually assigned different designations to these planets. They originally were based on binary codes for the use of extrapolation, but now they have been renamed to explain their location within space. Every designation has two parts the first part which tells you the location of the planet within space (galaxy, sector, area) and the second which tells you the number of the planet within that specific Area.Milky Way planets were usually designated with P??-???, and Pegasus planets are usually designated with M??-???, now Milky Way Planets are designated with P, number, letter and then the number of the planet for instance P0L-000 and Pegasus Galaxy Planets are designated with PGP. These prevents the exceptions from occurring like with the old system. There might be total number of 3 010 936 384 possible milky way designations.

The Milky Way's Two Designation Parts

Part One

2 All Grids

Very vague poorly made representation of the Milky Way Galaxy and its 35 grids.

The first digit of a gate address is generally the P for planet. There are however four exceptions to this, since not all gates are located on planets. The most common of these exceptions are the letters M, A and S. M is used for Moons, A is used for Asteroids and S is used for Satellites both natural and artificial. Finally there is also the K which I say stands for Carelessness since that is the reason there are four planets designations that start with a K and not with a P. This is due to the fact that sadly the nineties systems was set up in such a way that changing something is near impossible and generally not worth the hassle. So we have kept those four exceptions to the rules, in our planet system. However we have add their new designation to them and on this site they are luckily ranked by them.

The second digit of a gate address tells you in which grid/section it is located, there are 9 main grids (1-9), 2 secondary grids (X and Y), 23 tertiary grids (A-W) and one quaternary grid (Z).

1 Milky Way Grids

Very vague poorly made representation of the Milky Way Galaxy with all girds on it.

The third digit of a gate address was until 2010 assigned at random this made it essentially useless since the third digit could be anything from A to Z or 0 to 9 or there could even be no digit or fourth digit within the first part of the address. From 2010 however the third digit is used to notate the precise area or secondary grid in which the planet is located which is done by noting the nearest other gird closest to it. Except for grid Y in this case a 0 is used.

Part Two

The second part is simply just the number of the world within that sector and area. So for instance P19-001 is the designation for Earth and P19-002 is the designation for its closet neighbor.


First Digit

P = Planet
M = Moon
A = Asteroid
S = Satellite
K = Karelessness

Second Digit

1 = Grid 1
2 = Grid 2
3 = Grid 3
4 = Grid 4
5 = Grid 5
6 = Grid 6
7 = Grid 7
8 = Grid 8
9 = Grid 9
A = A Grid
B = B Grid
C = C Grid
D = D Grid
E = E Grid
F = F Grid
G = G Grid
H = H Grid
I = I Grid
J = J Grid
K = K Grid
L = L Grid
M = M Grid
N = N Grid
O = O Grid
P = P Grid
Q = Q Grid
R = R Grid
S = S Grid
T = T Grid
U = U Grid
V = V Grid
W = W Grid
X = Grid X
Y = Grid Y
Z = External Milky Way Grid

Milky Way Planets Designations and Numbers

There are about 52.911 planets withing the Milky Way Galaxy Gate System, they are broken down by these designations in different numbers.

Possible two digits combinations and their number of worlds

PA 8
PB 14
PC 5
PD 20
PE 28
PF 13
PG 34
PH 16
PI 22
PJ 11
PK 9
PL 7
PM 4
PN 6
PO 4
PP 2
PQ 5
PR 9
PS 15
PT 28
PU 23
PV 3
PW 13

299 total in sectors A to W.

Possible three digits combinations and their number of worlds

Sector 1

P1A 531
P1B 754
P19 1838
P12 1694
P1X 549

5366 total in sector 1

Sector 2

P2C 227
P2D 483
P2E 259
P2F 211
P21 1941
P23 2007
P2X 393

5521 total in sector 2

Sector 3

P3G 411
P3H 211
P3I 501
P3J 118
P32 1717
P34 2044
P3X 247

5249 total in sector 3

Sector 4

P4K 537
P4L 349
P43 2081
P45 1681
P4X 297

4945 total in sector 4

Sector 5

P5M 509
P5N 841
P5O 547
P54 3014
P56 2201
P5X 739

7851 total in sector 5

Sector 6

P6P 601
P6Q 488
P65 1660
P67 1581
P6X 599

4929 total in sector 6

Sector 7

P7R 448
P7S 321
P76 1651
P78 1581
P7X 559

4450 total in sector 7

Sector 8

P8T 468
P8U 522
P87 1487
P89 1559
P8X 417

4453 total in sector 8

Sector 9

P9V 488
P9W 841
P98 1567
P91 1745
P9X 461

5102 total in sector 9

Sector X

PX1 665
PX2 771
PX3 585
PX4 433
PX5 486
PX6 390
PX7 678
PX8 341
PX9 621

4970 total in sector X

Sectors Y and Z

PY0 57

PZZ 18

75 total in sector X and Y

Planet Types and Contact Types

Planet Types

See Also the full Article, Planet Types.

In order to better classify the planets the Stargate goes to we have divided them into 26 broad alphabetical ranked types, however these typing leave much over to improvement and are therefore very likely to be changed, updated and perfected on a later date.

Contact Types

Singular Contact Worlds

Are worlds only visited one time by us the Tau'ri.

Minor Contact World

Are worlds visited between 2 to 4 times by us the Tau'ri.

Average Contact World

Are worlds visited between 5 to 7 times by us the Tau'ri, this is the case for most worlds that is why they are called average.

Medium Contact World

Are worlds visited between 8 to 10 times by us the Tau'ri.

Regular Contact World

Are worlds visited between 11 to 14 times by us the Tau'ri.

Major Contact World

Are worlds visited between 15 to 20 times by us the Tau'ri.

Heavy Contact World

Are worlds visited between 21 to 45 times by us the Tau'ri.

Abundant Contact World

Are worlds visited 46 or more times by us the Tau'ri.

Lists of Milky Way Galaxy Planets

Lists of Other Planets


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