Four changes to the readout panel and the body cards, which between them were showing less than
the catalogues hold and not always distinguishing a measurement from an inference.
Picking a planet used to navigate straight to /body/:id. That tore down the system scene and the
camera with it, so comparing two planets meant flying back into the system between each. Hovering
a body now raises a card over the live view and clicking pins it; Full view still opens the route
for the full 3D inspection. Clicking empty space unpins, and leaving the system clears it.
The card and the detail page were assembling "what do we know about this world" independently,
which is the shape of bug where a planet reads 255 K in one panel and 254 K in the other. Both now
build from one shared view model.
Orbital period was absent everywhere. For a heliocentric orbit it follows exactly from the
semi-major axis, because in these units the Sun's mass is the unit of mass — Mars comes back
687.0 d against a published 686.98. It is deliberately not computed for moons, whose elements are
relative to a parent planet the catalogue has no mass for, nor for exoplanets: periodDays is
populated for none of the 6319 shipped records and hostStarMassSolar for none either, so any
figure would assume a solar-mass host and mis-state every planet around an M dwarf. Where a period
does exist it is filed under Measured or Derived according to which it is, not by its field name.
The system readout showed a flat 0.00 pc for the Sun's distance, which is arithmetically right and
reads as a bug — the distance from here to here is not a measurement, so it is suppressed. It
gains the host star's luminosity, marked as derived, and counts moons separately from planets. The
neighbourhood readout gains the one thing the star field cannot show: how many of those points can
actually be entered. Derived readouts carry a marker and a footnote saying so.
Every quantity now formats through one module whose precision follows magnitude, rather than a
fixed decimal count per call site that read as false precision at one end and lost real
information at the other: 0.0026 AU stays legible instead of rounding to 0.00, and Pluto's period
reads 248 yr rather than 90560 d.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaySiNst4HhDXBHnMy8p5G
Framing the whole system pushed the camera far enough back that the star
at the centre became a speck — about a pixel across for the Sun.
The cause is a constraint that cannot be tuned away. A star is sized
against its system's innermost orbit, because it must never swallow its
closest planet, while the camera is placed to frame the outermost ring.
In the solar system those differ by a factor of a hundred: at the distance
that fits Pluto in view, a disc that stays clear of Mercury is a pixel
across. No radius satisfies both, because the information genuinely does
not fit on one screen at that zoom.
So the disc stays honest to the orbits and the halo carries the
visibility. Light is not a surface: a glow that reaches past the innermost
orbit says the star is bright, not that it is large. Its extent is still a
multiple of the star — so a compact system keeps exactly the corona it had
— but floored against the framed radius, which is what the wide systems
needed.
The disc grows a little too: it may now reach 45% of the innermost orbit
rather than 35%, which still leaves clear space between the star's limb
and the closest orbit.
Also makes createGlowSprite take the extent it will draw rather than a
radius and a multiplier. The two were only ever multiplied together, and
how large a star's halo should be is not a property of the star — it
depends on how its system is framed, which is a decision that belongs with
the framing.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaySiNst4HhDXBHnMy8p5G
Fifteen bodies here have a real photograph. Every exoplanet does not, and
never will on current instruments — none has ever been imaged — and nor do
several of the solar system's own moons. Those all shared one crude
stand-in: a few noisy bands tinted by category, cached per colour, so
every exoplanet in the app was literally the same picture.
They now get a surface reasoned from what has actually been measured.
The chain is standard at every link. A host star's luminosity comes from
its catalogued apparent magnitude and its parallax distance — that pair is
exactly an absolute magnitude — plus a bolometric correction for its
spectral class. The correction is not optional: an M dwarf radiates most
of its light in the infrared, so its visual magnitude understates it more
than tenfold, and M dwarfs are what most nearby planet hosts are.
Luminosity and the semi-major axis then give an equilibrium temperature,
mass and radius give a bulk density, and size, temperature and density
together give a class of world.
Checked against the solar system the temperatures land on Earth 255 K,
Jupiter 112 K, Neptune 46 K, all within a kelvin or two of published
values, and 51 Pegasi b comes out at 1227 K against a published 1200.
Each class carries a palette reasoned from its chemistry — methane absorbs
red light, which is why the ice giants are blue — and a structure: zonal
bands for a body with a fluid envelope, because a rapidly rotating
atmosphere organises into them, and fractal terrain for one with a solid
surface. Polar caps grow and shrink with the derived temperature, which is
the clearest visible consequence of the whole chain.
The generator samples three-dimensional noise along the sphere rather than
a flat field, so there is no seam to stitch at the antimeridian and no
pinching at the poles, and it writes into a byte array rather than a
canvas — a pure function, testable, with no 2D context to be unavailable.
Two things the derivation cannot do, both stated on screen next to the
measurements it rests on. Equilibrium temperature ignores greenhouse
warming and internal heat, so Venus comes out at 300 K against a real
surface of 737 K and Io, kept molten by tides, classifies as ice. And
these are illustrations: reasoned, but not observations.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WaySiNst4HhDXBHnMy8p5G
Add star-map Angular app, ETL pipeline, and caveman plugin
Angular 3D star map (galaxy/system/body views, Three.js rendering,
navigation store) plus the NASA ETL tooling that builds the star,
exoplanet and solar-system datasets, Playwright e2e suite, and the
cs:caveman Claude Code plugin (command, agent, skill).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
@
Claude
Senrokai