Integrative Levels Classification project ILC2 developing schedules how it works builder meetings people references
ILC class h

ILC developing version
Expanded class h

   ▲  broader class

▽ ⌕         h  celestial objects; heavenly bodies; cosmic structures; astronomical objects  [astronomy; astrophysics; cosmology]  ← g bulk matter   ≈ DDC 520 523  ✍
▽ ⌕         h09e                 geocentrism; Ptolemaic system
▽ ⌕         h09eBc                           classical planets  ← hp planets
▽ ⌕         h09h                 heliocentrism; Copernican system
▽ ⌕         h28   [j8]           at declination; dec; δ
▽ ⌕         h282   [an]                at ly distance from Earth light years
▽ ⌕         h282tqto   ⋄                                    2.50 M  ✍
▽ ⌕         h287   [j89]                hour angle; HA; LHA
▽ ⌕         h288   [j189]                at right ascension; RA; α
▽ ⌕         h288bsrzq   ⋄                               0h 42m 44s  ✍
▽ ⌕         h28fsl   ⋄                          +41° 16'  ✍
▽ ⌕         h5       motion  [kinematics]
▽ ⌕         h52   [an]           orbiting in terrestrial days revolution period
▽ ⌕         h526   [an]                rotating in terrestrial days rotation period
▽ ⌕         h585   [an]                velocity m/s2; v; speed
▽ ⌕         h5852   [j7]                      velocity direction
▽ ⌕         h5855   [an]                     acceleration m/s²; a
▽ ⌕         h5855b                           deceleration; slow down
▽ ⌕         h5855c                           steady speed
▽ ⌕         h585c                      still; stationary
▽ ⌕         h5b            linear motion; rectilinear motion
▽ ⌕         h5c            circular motion  ← cccc 15 to 30 degrees
▽ ⌕         h5h            simple harmonic motion; pendulum
▽ ⌕         h5o            orbiting  [celestial mechanics]
▽ ⌕         h5r            rotating spin
▽ ⌕         h68   [g6]            colour
▽ ⌕         h7        structural layer
▽ ⌕         h70   ⋄           composed of substance
▽ ⌕         h70ebb   ⋄                          hydrogen
▽ ⌕         h7c            core
▽ ⌕         h7m            middle
▽ ⌕         h7r            external layer
▽ ⌕         h7s            surface
▽ ⌕         h7t            atmosphere
▽ ⌕         h83   [an]            absolute magnitude; Mv
▽ ⌕         h836   [an]                 apparent magnitude; m; vmag
▽ ⌕         h836bmlg   ⋄                                    -27; Sun apparent magnitude
▽ ⌕         h84   [an]            color index; B-V index; temperature
▽ ⌕         h84mgfg   ⋄                               0.656; Sun B-V index
▽ ⌕         h9   [X]       body kind
▽ ⌕         h91   [519]            evolutionary stage
▽ ⌕         h91n                 young
▽ ⌕         h92   [h]           orbiting central object
▽ ⌕         hU       the Earth  ← hpU solar planets   ≈ DDC 525
▽ ⌕         hU7             Earth structural layer  ← hpt terrestrial planets
▽ ⌕         hU7c                 core
▽ ⌕         hU7cCi                           inner core
▽ ⌕         hU7cCo                           outer core
▽ ⌕         hU7m                 mantle
▽ ⌕         hU7mCe                           lower mantle
▽ ⌕         hU7mCi                           asthenosphere
▽ ⌕         hU7mCuWr                           lithosphere
▽ ⌕         hU7mCu                           upper mantle; lithospheric mantle
▽ ⌕         hU7mCx                           Moho; Mohorovičić discontinuity
▽ ⌕         hU7r                 crust  ← i rocks
▽ ⌕         hU7rCc                           continental crust; sial
▽ ⌕         hU7rCo                           oceanic crust; sima
▽ ⌕         hU7s                 surface
▽ ⌕         hU7t                 atmosphere
▽ ⌕         hU7tCb                           troposphere
▽ ⌕         hU7tCe                           stratosphere
▽ ⌕         hU7tCm                           mesosphere
▽ ⌕         hU7tCt                           thermosphere
▽ ⌕         hU7tCx                           exosphere
▽ ⌕         hb       nebulae
▽ ⌕         hc       clouds; diffuse nebulae
▽ ⌕         hce            molecular clouds
▽ ⌕         hcg            Bok globules; Thackeray's globules
▽ ⌕         hd       dark matter
▽ ⌕         hg       galaxies
▽ ⌕         hgU            the Milky Way
▽ ⌕         hgd            dwarf galaxies
▽ ⌕         hge            elliptical galaxies
▽ ⌕         hges                 shell galaxies
▽ ⌕         hgl            lenticular galaxies
▽ ⌕         hgp            spiral galaxies; disk galaxies
▽ ⌕         hgpb                 barred spiral galaxies
▽ ⌕         hgr            ring galaxies
▽ ⌕         hgt            irregular galaxies
▽ ⌕         hgu            ultra diffuse galaxies; UDGs
▽ ⌕         hh       galaxy associations
▽ ⌕         hhg            galaxy groups
▽ ⌕         hhl            galaxy clusters  ✍
▽ ⌕         hhs            galaxy superclusters
▽ ⌕         hk       brown dwarves
▽ ⌕         hl       stars  ← gf plasma   ✍
▽ ⌕         hl5C                  star process
▽ ⌕         hl5Cn                      stellar nucleosynthesis
▽ ⌕         hl9             spectral type
▽ ⌕         hl91                  star evolutionary stage
▽ ⌕         hl91k                      protostars
▽ ⌕         hl91n                      young stellar objects
▽ ⌕         hl91p                      main sequence stars
▽ ⌕         hl91q                      neutron stars
▽ ⌕         hl9b                 O; blue
▽ ⌕         hl9c                 B; blue white
▽ ⌕         hl9e                 A; white
▽ ⌕         hl9f                 F; yellow white
▽ ⌕         hl9g                 G; yellow
▽ ⌕         hl9k                 K; orange
▽ ⌕         hl9m                 M; red
▽ ⌕         hl9r                 L
▽ ⌕         hl9t                 T
▽ ⌕         hlU            the Sun  ← hld dwarf stars hl91n young stellar objects
▽ ⌕         hlb            subdwarf stars
▽ ⌕         hld            dwarf stars
▽ ⌕         hlf            subgiant stars
▽ ⌕         hlg            giant stars
▽ ⌕         hlh            bright giant stars
▽ ⌕         hlj            supergiant stars
▽ ⌕         hlk            hypergiant stars
▽ ⌕         hp       planets  [planetary science]  ✍
▽ ⌕         hpU            solar planets  ← hlU the Sun
▽ ⌕         hpUc                 Mercury
▽ ⌕         hpUe                 Venus
▽ ⌕         hpUm                 Mars
▽ ⌕         hpUp                 Jupiter
▽ ⌕         hpUs                 Saturn
▽ ⌕         hpUu                 Uranus
▽ ⌕         hpUw                 Neptune
▽ ⌕         hpg            giant planets
▽ ⌕         hpt            terrestrial planets; telluric; rocky planets
▽ ⌕         hpt7s                      surface
▽ ⌕         hpt7t                      atmosphere
▽ ⌕         hq       minor planets; planetoids
▽ ⌕         hqd            dwarf planets
▽ ⌕         hqdU                 solar dwarf planets  ← hlU the Sun
▽ ⌕         hqdUc                      Ceres
▽ ⌕         hqdUp                      Pluto
▽ ⌕         hqf            asteroids
▽ ⌕         hqj            trojans
▽ ⌕         hqn            centaurs  ← hlU the Sun
▽ ⌕         hr       meteoroids; meteors
▽ ⌕         hs       planetary satellites; natural satellites; moons
▽ ⌕         hs92pUp   ⋄                               Jupiter satellites
▽ ⌕         hsU            the Moon
▽ ⌕         ht       planetary systems; star systems; stellar systems
▽ ⌕         htU            the Solar system  ← hlU the Sun
▽ ⌕         htUat                      comets
▽ ⌕         htc            binary stars
▽ ⌕         htd            triple star systems
▽ ⌕         hu       star clusters; stellar clusters  ← hl stars
▽ ⌕         huU            Pleiades
▽ ⌕         hug            globular clusters; GCs
▽ ⌕         hui            intermediate star clusters
▽ ⌕         huo            open clusters
 
Connected classes:
 
 g388  [h5]                 potential energy; motion
 h09eBc                          classical planets  ← hp 
 h92  [h]           orbiting central object
 hU      the Earth  ← hpU 
 hU7            Earth structural layer  ← hpt 
 hlU           the Sun  ← hld hl91n 
 hpU           solar planets  ← hlU 
 hqdU                solar dwarf planets  ← hlU 
 hqn           centaurs  ← hlU 
 htU           the Solar system  ← hlU 
 hu      star clusters; stellar clusters  ← hl 
 i31  [hU7]           from structural layer
 it      tectonic plates  [plate tectonics]  ← hUal 
 itt           plates of the Earth  ← hU 
 j28  [hp]           on planet
 j3      weather  [meteorology]  ← hUap 
 j5b           impact events  ← hqf 
 jU      landmasses of the contemporary Earth; continents, microcontinents  ← js hU 
 jdU           mountain ranges of contemporary Earth  ← hU 
 jyU           seas of the contemporary Earth; World Ocean  ← hU 
 n5m234                          migrating towards  ← h5 
 r3v           solar power; solar energy  ← hlU 
 svr           aircrafts  ← hU7t 
 woih                horoscopes; natal charts; celestial maps; cosmograms; vitaspheres; radical charts  [astrology]  ← h 
 wrn           naturalism  ← g h i j k l m 
 ygh           astronomy  ← h 

specificity 
current: 99 

   

ILC developing version — ISKO Italia <https://www.iskoi.org/ilc/> : 2006.03.06 - 2026.05.14 -