Integrative Levels Classification project ILC2 schedules developing schedules how it works 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  ✍
▽ ⌕         h28   [j8]           at declination ; dec; δ
▽ ⌕         h5       motion  [kinematics]
▽ ⌕         h52   [an]           orbiting in terrestrial days revolution period
▽ ⌕         h5b            linear motion; rectilinear motion
▽ ⌕         h5c            circular motion  ↞ ccccc 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
▽ ⌕         h7c            core
▽ ⌕         h7m            middle
▽ ⌕         h7r            external layer
▽ ⌕         h7s            surface
▽ ⌕         h7t            atmosphere
▽ ⌕         h84   [an]            color index ; B–V index; temperature
▽ ⌕         h88   [an]            absolute magnitude ; Mv
▽ ⌕         h9   [X]       body kind
▽ ⌕         h91   [51]            evolutionary stage
▽ ⌕         h92   [h]           orbiting central object
▽ ⌕         hU       the Earth  ↞ hpU solar planets   ≈ DDC 525
▽ ⌕         hU7             Earth structural layer  ↞ hpt terrestrial planets
▽ ⌕         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
▽ ⌕         hgl            lenticular galaxies
▽ ⌕         hgp            spiral galaxies; disk 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   ✍
▽ ⌕         hl9             spectral type
▽ ⌕         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
▽ ⌕         hpg            giant planets
▽ ⌕         hpt            terrestrial planets; telluric; rocky planets
▽ ⌕         hq       minor planets; planetoids
▽ ⌕         hqd            dwarf planets
▽ ⌕         hqf            asteroids
▽ ⌕         hqj            trojans
▽ ⌕         hqn            centaurs  ↞ hlU the Sun
▽ ⌕         hr       meteoroids; meteors
▽ ⌕         hs       planetary satellites; natural satellites; moons
▽ ⌕         hsU            the Moon
▽ ⌕         ht       planetary systems; star systems; stellar systems
▽ ⌕         htU            the Solar system  ↞ hlU the Sun
▽ ⌕         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:
 
 h92  [h]           orbiting central object
 hU      the Earth  ↞ hpU 
 hU7            Earth structural layer  ↞ hpt 
 hɭU           the Sun  ↞ hld hl91n 
 hpU           solar 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 
 r5v           solar technology  ↞ hlU 
 str           aircrafts  ↞ hU7t 
 wrn           naturalism  ↞ g h i j k l m 
 ygh           astronomy  ↞ h 

specificity 
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