Oge elekere

$${\text{LHA}}_{\text{object}}={\text{GST}}+\lambda _{\text{observer}}-\alpha _{\text{object}}$$

A na egosi akụkụ elekere site na akụ oroma n'ụgbọ elu equator celestial. Àkụkụ ahụ na agwụ n'okirikiri elekere nke ntụpọ oroma na egosi ebe a na ahụ anya nke ihe na mbara igwe na mbara igwe.

Na mbara igwe na ntugharị elu igwe, akụkụ elekere bụ akụkụ dihedral n'etiti ụgbọ elu meridian (nke nwere axis ụwa na zenith) na okirikiri elekere (nwere axis ụwa na ebe mmasị nyere).

Enwere ike ịnye ya na ogo, oge, ma ọ bụ ntụgharị dabere na ngwa ahụ. Enwere ike igosipụta akụkụ ahụ dị ka adịghị mma n'akụkụ ọwụwa anyanwụ nke ụgbọ elu meridian yana ezigbo ọdịda anyanwụ nke ụgbọ elu meridian, ma ọ bụ dị mma n'akụkụ ọdịda anyanwụ site na 0° ruo 360°. Enwere ike tụọ akụkụ ahụ na ogo ma ọ bụ n'oge, yana 24h = 360 ° kpọmkwem. Na ntugharị elu igwe, mgbakọ ahụ bụ ịtụ n'ogo ọdịda anyanwụ site na praịm meridian (Greenwich hour angle, GHA), site na mpaghara meridian (akụkụ elekere mpaghara, LHA) ma ọ bụ site na ebe mbụ nke Aries (sidereal hour angle, SHA).

le is paired with the declination to fully specify the location of a point on the celestial sphere in the equatorial coordinate system.

Mmekọrịta na mgbago ziri ezi

Dị ka a na ahụ site n'elu ogwe ugwu nke ụwa, akụkụ elekere mpaghara kpakpando (LHA) maka onye na ekiri ihe dị nso na New York (ntụpọ uhie). E gosikwara ya bụ nrịgo aka nri nke kpakpando na akụkụ elekere Greenwich (GHA), oge mpaghara pụtara oge (LMST) na Greenwich pụtara oge sidereal (GMST). Akara ʏ na achọpụta ntụzịaka vernal equinox. N'iche na ihe atụ a, ụbọchị nke afọ bụ March equinox ya mere anyanwụ na edina n'akụkụ akụ isi awọ mgbe ahụ kpakpando a ga ebili n'ihe dị ka etiti abalị. Naanị mgbe onye na ekiri ya rutere n'ụba akụ ndụ akwụkwọ ndụ, chi ọbụbọ na abịa wee kpuchie n'ìhè ka ọhụhụ nke kpakpando ahụ dị ihe dị ka awa isii tupu ọ malite n'ebe ọdịda anyanwụ. Mgbago ziri ezi nke kpakpando ahụ dị ihe dịka awa iri na asatọ

Akụkụ ocal hour (LHA) nke ihe dị na mbara igwe onye na ekiri bụ$${\text{LHA}}_{\text{object}}={\text{LST}}-\alpha _{\text{object}}$$or

Akụkụ elekere na adịghị mma (-180 ° <LHAobject <0°) na-egosi na ihe ahụ na abịaru nso meridian, akụkụ elekere dị mma (0° <LHAobject <180°) na-egosi na ihe ahụ na apụ na meridian; akụkụ elekere efu pụtara na ihe ahụ dị na meridian.

Igwe elekere anyanwụ

Na ekiri anyanwụ si n'ụwa, akụkụ elekere anyanwụ bụ ngosipụta nke oge, egosipụtara na nha akụkụ, na abụkarị ogo, site na ehihie anyanwụ. N'ehihie anyanwụ, akụkụ elekere bụ ogo efu, na oge tupu ehihie anwụ gosipụtara dị ka ogo na adịghị mma, na oge mpaghara mgbe ehihie anyanwụ na egosipụta dị ka ogo dị mma. Dịka ọmụmaatụ, n'elekere 10:30 nke ụtụtụ n'oge o doro anya na mpaghara elekere bụ -22.5° (15° kwa elekere ugboro 1.5 awa tupu ehihie).

A na eji cosine nke akụkụ elekere (cos(h)) gbakọọ akụkụ zenith anyanwụ. N'ehihie anyanwụ, h = 0.000 so cos(h) = 1, na tupu na mgbe ehihie anyanwụ gasịrị, okwu cos (± h) = otu uru maka ụtụtụ (akụkụ elekere na-adịghị mma) ma ọ bụ ehihie (n'akuku elekere), nke mere na Anyanwụ nọ n'otu elu ahụ na mbara igwe na 11:00AM na 1:00PM oge anyanwụ.

Sidereal hour akụkụ

Akụkụ akụkụ elekere (SHA) nke ahụ dị na mbara igwe bụ anya ya n'akụkụ ọdịda anyanwụ nke vernal equinox nke a na atụkarị ya na ogo. SHA nke kpakpando na-adịgasị iche site n'ihe na erughị otu nkeji nke arc kwa afọ, n'ihi ụzọ, ebe SHA nke mbara ala na adịgasị iche site n'abalị ruo n'abalị. A na ejikarị SHA eme ihe na ntugharị elu igwe na mbara igwe ikuku, naebipụta ụkpụrụ na almanacs nke mbara igwe. [Ihe ndekọ achọrọ]

Hụkwa

• Clock position
• List of orbits