86d97b903eba34af0ada8626d61cd143c4ffd957
6
Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
  SenrokaiandClaude Opus 5.5
|
86d97b903e |
Print Earth's inclination as 0.00 degrees, not -0.00
Standish's Table 2a fits the Earth-Moon barycentre's inclination as -0.00054346 degrees, and the card printed toFixed(2) of it: "Inclination -0.00°", where the branch's base read 0.00. A negative inclination is the same orbit as its size with the node turned half round, so the card prints the size. The elements the map propagates are left as Standish gives them. The live Earth page now reads "INCLINATION 0.00°". Control: printing the fitted sign again fails "prints the size of an inclination fitted below zero". Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> |
||
|
SenrokaiandClaude Opus 5.5
|
395b613f82 |
Stop telling the reader that the moons drawn without a map were never imaged
provenanceFor ended every derived surface with "Not an observation — no image of this world exists", a sentence written for exoplanets. The branch added eleven solar-system bodies with no map in the catalogue, and eight of them are moons spacecraft photographed: Voyager 2 imaged Miranda, Ariel, Umbriel, Titania, Oberon, Proteus and Nereid, Cassini Hyperion (26 Sep 2005, from about 500 km). The textures README says so itself. Hubble sees Eris, Haumea and Makemake too, as points. Only an exoplanet now gets that sentence. A moon or dwarf planet drawn from its measurements says "no global map of this world is used here", which is true of all eleven. Read off the live pages: Titania, Hyperion and Eris end with it, and an exoplanet keeps the old wording. Controls: giving every derived surface the exoplanets' sentence fails "says a moon without a map is illustrated, without saying it was never imaged"; giving it to none fails "says an exoplanet has never been imaged". Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> |
||
|
SenrokaiandClaude Opus 5.5
|
2e5daa0f97 |
Give every body the period it is drawn going round in, and say where its orbit comes from
Audit #38: Europa's card listed its axis, eccentricity and inclination but no period, while the scene turned it round Jupiter all the same: heliocentricPeriodDays refused every moon, since the catalogue carried no planet masses. Every solar-system body's period is now 360 over the JPL mean motion that carries it round the scene, filed under Measured since that is JPL's published figure: Europa 3.55 d, the Moon 27.3 d, Saturn 29.5 yr on the live cards, Earth 365.2564 d. heliocentricPeriodDays is gone. Exoplanets keep the archive's period, or none. The card's provenance line now ends with where the orbit comes from, "Orbit: JPL SSD satellite mean elements, epoch 1997 Jan 16." for Europa, "Orbit: JPL approximate mean elements (Standish), fit for 3000 BC to AD 3000." for a planet, and the Sun's system note says so too: "Orbits propagated from JPL mean elements, the planets' fit for 3000 BC to AD 3000, to the current date." Other systems keep "published elements". All three read in the running app. Each has a test that fails without it (moons refused a period, provenance without the orbit, a note without the source). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com> |
||
|
SenrokaiandClaude Opus 5.5
|
48319c3fe2 |
Move the solar system on JPL's mean elements, so it stays right as the clock runs
Every body carried one set of osculating elements from Horizons at 2025-01-01, run forward by
Kepler with a GM from a table of mass ratios. That set is exact at its instant and drifts from
then on, and the clock now runs a month a second: the Moon, with Earth's mass ratio lacking its
own and the osculating axis, went round in 27.70 days instead of 27.32, 66 degrees out after a
year, and its locked face was spun at the same wrong rate.
Planets and Pluto now take Standish's Table 2a/2b ("Keplerian Elements for Approximate
Positions of the Major Planets"): elements against the J2000 ecliptic, their rates per century,
and the b, c, s, f terms of Jupiter to Pluto, fit for 3000 BC to AD 3000. Table 1 is closer near
the present (Saturn 0.23 degrees at worst 1950-2100, against 0.32 here) but is only fit for
1800-2050, and by AD 3000 has Saturn 4.3 degrees out where Table 2 holds every planet within 0.3.
The moons take JPL SSD's satellite mean elements: sidereal mean motion n to ten figures, the
periods of their node and periapsis, and each one's local Laplace plane by its pole. They
propagate with n itself, never a GM: gmForParent and its mass table are gone. Horizons still
gives size, spin and obliquity.
Both tables are read from the Internet Archive's copy of JPL's pages, pinned to one capture: the
live approx_pos page has dropped Pluto, and the live sats/elem page has dropped n and rounds the
period to four or five figures (Phobos 0.3187 d, a revolution out within a decade).
What the tables leave implicit, measured against Horizons before it was accepted:
- The precession periods are magnitudes. A node regresses on a prograde orbit and advances on a
retrograde one; a periapsis advances except where a resonance forces the eccentricity. Io's
and Europa's follow their conjunction line backwards at 2 n(Europa) - n(Io) = 0.74 degrees a
day, which is exactly the 1.625- and 1.394-year periods in the table. Read as advancing, Io
was 0.9 degrees out and Europa 2.1.
- On a retrograde orbit the node's turning is added back to the mean anomaly. Taken off, Triton
drifted a degree a year, 105 degrees by 2100.
- The Laplace frame's x axis is where the plane rises through the ICRF equator, RA of the pole
plus 90. Read against the ecliptic, Io was 2.8 degrees out, Phobos 54 and Titan 127.
Orbit lines are now drawn in their own plane and turned by a quaternion each tick, so a turning
node carries the line with the body: fixed at one date, the Moon's line would be up to 69 000 km
off it nine years on. The Earth row is the Earth-Moon barycentre, 4 700 km from Earth, 0.002
degrees from the Sun. A tidally locked moon's day is now 360 / n, its sidereal period (the Moon
27.321662 d), so it stays locked to the orbit it is drawn on.
Angular error against Horizons VECTORS (ICRF, TDB; heliocentric for planets, planet-centred for
moons), degrees, read from the live renderer's markers in the running app:
body 1950-01-01 1975-01-01 1987-07-23 2000-01-01 2025-01-01 2037-03-06 2050-01-01 2075-01-01 2100-01-01 max
mercury 0.004 0.002 0.003 0.002 0.002 0.001 0.000 0.002 0.000 0.004
venus 0.003 0.007 0.003 0.004 0.004 0.004 0.003 0.004 0.004 0.007
earth 0.003 0.008 0.002 0.005 0.004 0.009 0.003 0.002 0.003 0.009
mars 0.009 0.010 0.008 0.024 0.009 0.012 0.009 0.011 0.028 0.028
jupiter 0.063 0.030 0.171 0.135 0.013 0.020 0.056 0.041 0.075 0.171
saturn 0.080 0.064 0.018 0.320 0.066 0.114 0.044 0.164 0.177 0.320
uranus 0.018 0.169 0.068 0.050 0.101 0.015 0.141 0.017 0.114 0.169
neptune 0.070 0.028 0.004 0.021 0.036 0.037 0.013 0.029 0.072 0.072
pluto 0.045 0.054 0.041 0.033 0.019 0.020 0.023 0.027 0.026 0.054
moon 0.486 1.928 0.127 0.631 1.407 1.086 0.720 0.339 1.180 1.928
phobos 2.068 0.294 0.881 1.113 0.313 0.636 2.089 5.862 11.099 11.099
deimos 0.077 0.043 0.310 0.066 0.164 0.068 0.034 0.468 0.044 0.468
io 0.021 0.015 0.010 0.019 0.009 0.035 0.006 0.011 0.022 0.035
europa 0.036 0.039 0.053 0.064 0.078 0.032 0.006 0.034 0.044 0.078
ganymede 0.132 0.103 0.018 0.007 0.023 0.054 0.091 0.118 0.044 0.132
callisto 0.040 0.019 0.023 0.019 0.038 0.008 0.060 0.119 0.056 0.119
titan 0.003 0.019 0.023 0.023 0.027 0.028 0.048 0.008 0.014 0.048
triton 0.051 0.029 0.009 0.021 0.052 0.048 0.063 0.089 0.137 0.137
Three miss what was hoped for, and why:
- Jupiter 0.17, Saturn 0.32, Uranus 0.17 against the 0.1 hoped for: short-period perturbations
of the giants by one another, which no Keplerian fit carries. Standish states his own Table 2
errors as 600, 1 000 and 2 000 arcseconds (0.17, 0.28, 0.56 degrees). Out to AD 3000, measured
at 1800, 2200, 2400, 2600 and 3000, every planet stays within 0.3.
- The Moon, 1.9: evection (1.27) and variation (0.66), which a mean ellipse leaves out.
- Phobos, 2.1 until 2050, then 5.9 in 2075 and 11.1 in 2100, growing as the square of the time:
its tidal acceleration, which the table has no column for. Its elements are MAR080's, epoch
1950. The map's dates are also UTC where the elements are TDB, 69 s today,
which is 0.9 degrees of Phobos and nothing for anything else.
Held in place by:
- build.ts: each body's mean elements against Horizons' own osculating elements on the ETL's
2025-01-01, at most 0.25 degrees for a planet and 2.5 for a moon (measured: Uranus 0.101, the
Moon 1.407; a regressing Triton node reads 10.24 and fails), and every moon's day equal to its
sidereal period (a 1% error fails).
- Unit tests freezing nine Horizons vectors (Earth 2100, Jupiter 1950, Saturn 2075, Pluto 1975,
the Moon 2050, Io and Europa 1950, Titan and Triton 2100) through SystemOrbitsRenderer, the
Moon kept on its own turning line, the retrograde rule, the Standish terms, the Laplace frame,
and both table parsers. Nine mutants each fail the test named for them, and the two
validators each refuse a mutated build of the real catalogue.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
|
||
|
Claude
|
7b0f32f71a |
Assemble a body's readouts once, not once per panel
Follow-up to review on #3. The card and the detail page each built their own Measured/Derived split, kind label and provenance sentence — the drift buildBodyViewModel exists to prevent, re-forked one layer up, and the drift would have been in which side of the measured/derived line a quantity falls on, which is the distinction those panels exist to draw. One bodyReadouts(body) now returns both blocks and the sentence, and both templates iterate it. The two surfaces render identical rows as a result, and the card gains the inclination the detail page already showed. Also from that review: - KIND_LABELS was duplicated between the two panels; it now lives beside bodyReadouts. The third copy the review pointed at is a different union (search results are star/body/exoplanet, and label a body "Body"), so it stays where it is. - CardRow was HudReadout renamed. Both are now Readout, which HudReadout extends with its derived flag. - The enterable-systems count was a 21-line lazy memo over arrays that are already in hand; it is one expression where those arrays are assigned. - buildBodyViewModel now carries hostStarId, so the detail scene stops rescanning both catalogues for something the builder had already resolved. - heliocentricPeriodDays was called twice for the same body. - The superscript helper was a split/map/join; it is a replace. - info-panel had five computed() each wrapping one pure call with a non-null assertion, beside a template that inlined the same kind of call directly. They are gone with the shared readouts. - Dropped a tautological test that compared a pure function to itself. Replaced with one that asserts the host star id the builder now carries. - Removed the orphaned doc comment left behind when formatParsecs/formatAu moved out. And one the review raised as out of scope but is worth taking: formatRadiusKm grouped thousands above its decimal threshold and not below it, so 69,911 km sat beside a bare 6371 km. Both are grouped now. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WaySiNst4HhDXBHnMy8p5G |
||
|
Claude
|
1019727a39 |
Say what is known about a world, and how it is known
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 |