Category:Star Clusters

This category lists all known star clusters, both open & globular.

Note: For the sake of simplicity, the dimensions of star clusters in Starship Tracker are perfectly identical from the top to the bottom.

If a cluster exists completely within one sector plane (ex: 0.00 to 20.00): its Z-coordinates will all match that determined to be its base (i.e., its center) z-plane.
If a cluster crosses over into one additional sector plane: it will have two representations: one each on the Z-planes representing the top and the bottom of the cluster, with the designated z-coordinates. The (exact) base z-plane will not be represented, though the cluster's Name will be centered on that base z-plane (at the cluster's geographical center). Each of the two location databases will be titled with "(top)" or "(bottom)" appended to the Name.
If a cluster crosses over into more sector planes than two: the base plane will be titled only with the location name, with the z-coordinates of that plane matching that determined to be its base (i.e., its center) z-plane. The top and bottom planes will be represented with locations titled "(top)" or "(bottom)" appended to the Name and all intermediate sector planes will have the "floor" of that sector plane appended to the Name (ex: "Dorias Cluster (-20)"). The z-coordinates of the top and bottom representations will match those designated and intermediate sector-plane locations will have the z-coordinates match the mid-range of that sector plane (ex: for -20.00 through -0.01, it would be set at -10.00).

Method

1. Provide Perplexity the dimensions of the nebula/star cluster/state's established coordinates of its central plane:

A closed asymmetrical shape is represented on a 2D map with the following (JSON format) coordinates. Generate that 2D representation as an image with a defining boundary.

Attach those points; ex:

"points":[{"x":-31.16,"y":10.75,"z":0},{"x":-32.15,"y":8.55,"z":0},{"x":-29.8,"y":7.14,"z":0},{"x":-27.71,"y":10.75,"z":0},{"x":-26.6,"y":12.82,"z":0},{"x":-28.14,"y":12.51,"z":0}]

Confirm the provided image roughly matches the actual shape in SST.

2. Determine the relative center of the the nebula/star cluster/state:

What is the coordinate for the geographic center of this shape?

3. Determine the greatest length between established coordinates of the nebula/star cluster/state:

What is the longest dimension that exists within this shape?

4. Determine the upper and lower z-axis values, based on that greatest length; modify as necessary/pertinent.

5. Determine the approximate volume by the central plane's established dimension and the greatest length doubled:

Calculate the volume of a large irregular diffuse nebula (not bipolar) with a fractal boundary and vertical extent of ## units, using the defined cross-sectional area as the base.

6. For star clusters, determine the possible range of stars within that volume:

In an open star cluster (with an average cluster-wide density) with a volume of xxx cubic lightyears, what is the range of expected number of stars?