TKS Sun Laboratory

सूर्य — Solar Ephemeris & Astronomical Observatory

Live apparent Sun · Earth–Sun geometry · seasons · saṅkrānti · equation of time · declination · ayanāṃśa · eclipses — from precise apparent positions (Engine A).

Solar instrument panel

Level 1 · Today's Sun

1 · Live solar observatory data
2 · आज का सूर्य (local)

Level 2 · Astronomical Sun

3 · सूर्य की दैनिक गति (altitude)
4 · Earth–Sun geometry
5 · ऋतु प्रयोगशाला (seasons)
Sāyana (tropical) crossings of λ☉ = 0° / 90° / 180° / 270°. Sidereal (nirayana) marking shown via saṅkrānti in section 7.
6 · Sūryasiddhānta vs modern ayanāṃśa
Sūryasiddhānta (Mool) ayanāṃśa live (ayana-calana/spanda). SS graha sphuṭa अलग SS engine से आता है; यहाँ ayanāṃśa-आधारित तुलना।

Level 3 · Pañcāṅga Sun

7 · Saṅkrānti laboratory
Solar ingress: nirayana λ = 0°,30°,…,330° (Lahiri). Sidereal rāśi boundaries.
8 · Makar Saṅkrānti research
Traditional Uttarāyaṇa begins at Makara saṅkrānti (nirayana λ☉=270°); the astronomical northward motion begins at the December solstice (tropical λ☉=270°). The two differ by the ayanāṃśa.
9 · Equation of time
10 · Solar declination

Level 4 · Scientific Sun

11 · सूर्य का उदय-अस्त observatory
Sunrise/set = upper limb at the visible horizon: geometric centre altitude h₀ = −R − SD − dip (all negative) — R = refraction (≈34′ at P/T), SD = solar semidiameter (≈16′), dip = 1.76′·√h. Sea level ⇒ h₀ ≈ −0.833°. Twilight = geometric centre −6°/−12°/−18°. Alt/P/T editable above.
12 · Solar eclipse laboratory auto-computed
StatusPress “Compute eclipses”.
Local circumstances deepen in the Eclipse page.
13 · Solar motion (reference chain)
14 · Precession / ayanāṃśa laboratory

Level 5 · Deep-time & research Sun

15 · Sun & Pañcāṅga
16 · Engine-B Sun laboratory data
Engine B = independent N-body (DOPRI5; Newtonian+1PN+J2..). Δ relative to DE441/DE440. Sun barycentric.
17 · IC Monte-Carlo offline
18 · Deep-time Sun data · reference region
REFERENCE = DE441 validated (±~15 kyr) · RECONSTRUCTION = propagated (offline for >15 kyr). “Dynamical reconstruction — not modern ephemeris accuracy.”
19 · Obliquity laboratory
20 · Perihelion / Aphelion laboratory
21 · Solar constants / physical Sun
TKS astronomical ephemeris engine hai, solar-weather forecasting engine nahi. Sunspots/flares/CME = separate “Solar Physics” module (planned).
22 · Ancient solar astronomy framework
Pipeline: textual value → epoch assumption → TKS reconstruction → modern reference → Δλ (Vedāṅga Jyotiṣa · Sūryasiddhānta · Āryabhaṭīya). Curated dataset: planned.

23 · Solar research modules · P1–P6

… computing solar research modules (P1–P6) …

Structure

☉ SURYA ├── Position ✓ ── 2 Today ✓ ├── Daily motion ✓ ── 4 Earth–Sun ✓ ├── Seasons ✓ ── 6 Sūryasiddhānta ○ ├── Saṅkrānti ✓ ── 8 Makara ✓ ├── Equation/time ✓ ── 10 Declination ✓ ├── Rise/Set ✓ ── 12 Eclipse ✓ ├── Solar motion ✓ ── 14 Ayanāṃśa ✓ ├── Sun & Pañcāṅga ✓ ── 16 Engine-B ○ ├── IC Monte-Carlo ○ ── 18 Deep time ○ ├── Obliquity ✓ ── 20 Perihelion ✓ ├── Constants ✓ ── 22 Ancient ○ └── Solar research ✓ ── 23 P1–P6 ✓ (✓ data · ◐ partial · ○ planned)
संस्करणः bin-1790611335