Inkoranyamagambo

A

Apoapsis

Akadomo Bya Kuva: i, Ku Uburebure A (1. + e). i ni,.

Inzira r_a = a (1 + e)

Na:: Igihe kya karere

B

Bya

Imfuruka, in i Ubwato Kuva: i Idosiye Kuri i.

Inzira ϖ = Ω + ω

< guibutton > Aho: ϖ Uburebure bw'Ikirere; Ω Bya i

Na:: Bya i, Igihe kya karere

I

Igice:

A unit of length defined as exactly 149,597,870,700 metres, roughly the average distance between Earth and the Sun. Defined by IAU 2012 Resolution B2.

Na:: Igihe, Umwaka

Ikizamuko

hagati a Gukaraga Umurongo fatizo na i Kuri Ubwato Earth’s is about 23.44°, which causes the seasons. Uranus’s is about 98°.

Na:: Ihindurangano, Igihe- ngombwa, Equinox

Igipimo

A - Urwego: Igipimo Bya - Ikirere ku Bortle in Sky & Telescope (2001), from class 1 (excellent dark site, stars to magnitude 7.6 to 8.0) to class 9 (inner city, magnitude 4.0 at best).

Na:: Ingano:, Ikimenyetso

U

Umuvuduko

Umuvuduko ya: A Ku Uburebure R Just above Earth’s surface it is about 7.9 km/s.

Inzira v_c = √(μ / r)

< guibutton > Aho: μ Ikintu; r Bivuye i Hagati

Na:: Umuvuduko, Itandukanya

I

Itsinda ry'ibitangaza

One of 88 officially defined regions of the sky (IAU, 1922 to 1930), named after a traditional star pattern such as Orion. in A Ku

Na:: Ingano:

Ihindurangano

Bya A Akadomo in i Amajyepfo (+) Cyangwa Ku ruhande rw’ ibumoso: (-) Bya i, i Bya Ubugari:. The Sun’s declination swings between +23.44° and −23.44° over the year.

Inzira sin δ = sin ε · sin λ

< guibutton > Aho: δ Ihindurangano; ε Bya i; λ Ubuhagarike

Na:: Ikizamuko, Igihe- ngombwa

V

V

in in ni i Inyungu Bya: - V, na A.

Inzira Δv = v_e ln(m₀ / m_f)

< guibutton > Aho: v_e Umuvuduko; m₀, m_f Na Impera

Na:: Kwimura, Inzira

I

Isinya

A i na ni Uruziga, OYA na ni OYA A Ukwezi: (IAU 2006). :,,,,.

Na:: Isi, Kuyipa

E

E

A ni: 0 ya: A Uruziga, hagati 0 na 1. ya:, 1. ya: A na hejuru 1. ya: A.

Na:: Ishushogi, Igihe kya karere

Eclipse

Rimwe i Igicucu Bya. : i Igicucu ku (Ku Gishya). : i Igicucu (Ku Cyuzuye).

Na:: Node, Na

I

Ikizamuko

Ubwato Bya i, na i buri mwaka Inzira: i. ni i Indango Ubwato ya: Bya - Sisitemu. It is tilted about 23.44° to Earth’s equator.

Na:: Ikizamuko, i, Node

Ishushogi

A Gufunganye:% S, i Gushyiraho Bya Utudomo Kuri Kabiri Bihagaritse Utudomo () & Ongera Hejuru Kuri A. Na: i Hagati Igitsina Ku Rimwe (Itangira).

Inzira r = a(1 − e²) / (1 + e cos ν)

< guibutton > Aho: a Umurongo fatizo; e Itandukanya; ν nibyo

Na:: E, Umurongo fatizo A

E

Equinox

The moment when the Sun crosses the celestial equator (declination 0°), around 20 March and 22 September. na Umunsi ni Bigyanye Bingana.

Na:: Igihe- ngombwa, Ihindurangano

U

Umuvuduko

Gitoya Umuvuduko Ku A Igitsina ya:. ni √2 i Umurongo: Umuvuduko Ku i Intera. Earth’s surface: 11.2 km/s.

Inzira v_esc = √(2μ / r)

Na:: Umuvuduko, Ibara:

G

Gukataho

i in na in Kigenga, OYA ni.

Na:: Ibara:, Ibara:

I

Igenamiterere

Bya i Bidahinduka na A, μ =. ni Birenzeho Cyangwa. Earth: 398,600.4 km³/s²; Sun: 1.32712 × 10¹¹ km³/s².

Inzira μ = G M

Na:: Ibara:, Itandukanya

Ibara:

hagati. Isobanuramiterere i ni Kuri Byombi na Kuri i Karete Bya Uburebure.

Inzira F = G M m / r²

< guibutton > Aho: G 6.67430 × 10⁻¹¹ m³ kg⁻¹ s⁻² (CODATA 2018); M, m i Kabiri; r hagati

Na:: Igenamiterere, Gukataho

K

Kwimura

Gitoya - Kabiri - Guhindura… hagati Kabiri Umurongo:, Bya Bitandukanye Byombi.

Inzira a_t = (r₁ + r₂) / 2

Na:: V, Itandukanya

I

i

Bya Ubwato Bifitanye isano Kuri A Indango Ubwato (i ya:, i Ibisimbuka- ruguru ya:). Above 90° the orbit is retrograde.

Na:: Bya i, Isubiranyuma

i

Karete Bya i Igihe ni Kuri i Bya i - Umurongo fatizo. i, Na: in na A in, ² = a.

Inzira T² / a³ = 4π² / μ

< guibutton > Aho: T Igihe kya karere; a Umurongo fatizo; μ M + m

Na:: Igihe kyamara, Umurongo fatizo A

K

Kuyipa

A region of icy bodies beyond Neptune, from about 30 to 50 au from the Sun. , na.

Na:: Aside, Isinya

I

Ikimenyetso

Cyangwa Ikirere, Igicuku Gushigikira Na

Na:: Igipimo

Igihe

Igihe Gishya Kuri A Uburebure 8 iminota 19 amasogonda Kuri. Kuri ku i kimurika - Igihe.

Inzira t = d / c

< guibutton > Aho: d Uburebure; c speed of light, 299,792.458 km/s

Na:: Igice:

U

Umwaka

The distance light travels in vacuum in one Julian year (365.25 days): about 9.46 trillion km, or 63,241 au. ni A Intera OYA A Igihe.

Inzira 1 ly = c × 365.25 × 86,400 s

< guibutton > Aho: c speed of light, 299,792.458 km/s

Na:: Igice:, Igihe

B

Bya i

Imfuruka, in i Indango Ubwato Kuva: i Indango Iy’ ibumoso:, Kuri i Akadomo i i Ubwato.

Na:: Node, i, Bya

I

Ingano:

A Igipimo Bya Urumuri, Gitoya Imibare. Five magnitudes are exactly a factor of 100 in brightness.

Inzira m₁ − m₂ = −2.5 log₁₀(F₁ / F₂)

< guibutton > Aho: m Ingano:; F Impuzandengo

Na:: Igipimo

A

Aside

The region between the orbits of Mars and Jupiter, roughly 2.2 to 3.3 au from the Sun, where most known asteroids orbit. ni ubusa Umwanya; ni i.

Na:: Kuyipa, Isinya

M

M

An angle that increases uniformly with time, 360° per orbit. Ibirindiro: Kuva:.

Inzira M = E − e sin E

< guibutton > Aho: E Ihindurangano; e Itandukanya

Na:: E

N

Node

Bya i Kabiri Utudomo A Indango Ubwato. ku i; Ryari: A Gishya Cyangwa Cyuzuye A.

Na:: Bya i, Eclipse

I

Inzira

A A (in A) Amahinduka i. Kuva: Gitoya i Umuvuduko.

Inzira Δv = √(v∞² + v_esc²) − v_c

< guibutton > Aho: v∞ Umuvuduko; v_esc Umuvuduko ku i; v_c Umurongo Umuvuduko ku i

Na:: V, Umuvuduko

Ibara:

Inzira: Bya A i Bya i Kabiri - ni A Icyiciro: (Yahagaritswe), A Cyangwa A (Gufungura).

Na:: Ishushogi, i, Gukataho

Igihe kyamara

Igihe Kuri Kurangiza Rimwe. Igihe ni i; i Igihe ni Bifitanye isano Kuri, Nka i Kuva:.

Inzira T = 2π √(a³/μ)

< guibutton > Aho: a Umurongo fatizo; μ Igenamiterere Bya i

Na:: i, Ukwezi

Igihe kya karere

Akadomo Bya Kuri i, Ku Uburebure A (1. - e). i ni,.

Inzira r_p = a (1 − e)

Na:: Apoapsis, Itariki

Itariki

Akadomo Bya i Kuri i. Earth passes it in early January at about 147.1 million km. Akadomo ni.

Na:: Igihe kya karere, Apoapsis

Isi

By the 2006 IAU definition, a body that orbits the Sun, is massive enough to be nearly round under its own gravity, and has cleared the neighbourhood around its orbit. Sisitemu.

Na:: Isinya, Ibara:

Isubiranyuma

Cyangwa in i Iy’ ibusamo Kuri in i Sisitemu. Venus rotates retrograde; Triton and Halley’s Comet orbit retrograde (inclination above 90°).

Na:: i, < guibutton > UMUNSI

U

Umurongo fatizo A

Bya i Birenzeho Uduciro Bya Umurongo fatizo. i Ingano:, na Igihe.

Inzira a = (r_p + r_a) / 2

< guibutton > Aho: r_p Uburebure; r_a Uburebure:

Na:: i, Ishushogi

<

< guibutton > Umunsi

Igihe A Kuri Guhindura… Rimwe Bifitanye isano Kuri i. For Earth: 23 h 56 min 4.09 s.

Na:: < guibutton > UMUNSI

I

Isidireal month

The time the Moon takes to orbit Earth once relative to the stars: 27.322 days.

Na:: Ukwezi

<

< guibutton > UMUNSI

Igihe Kuva: Rimwe Kuri i Ibikurikira >, Rimwe Kuri i. Kuva: i & Umunsi i Gihinguranya.

Inzira 1/P_solar = 1/P_rot − 1/P_orb

< guibutton > Aho: P_rot Igihe NIBA; P_orb Igihe kya karere

Na:: < guibutton > Umunsi, Isubiranyuma

I

Igihe- ngombwa

The moment when the Sun reaches its farthest north (around 21 June) or south (around 21 December) declination. i na iminsi.

Na:: Equinox, Ihindurangano

Ibara:

Igice. ya: () Zeru ya: Gusohoka, Biboneye ya:

Inzira ε = v²/2 − μ/r = −μ / (2a)

Na:: Itandukanya, Umuvuduko

U

Ukwezi

The time between two identical Moon phases, e.g. new Moon to new Moon: 29.531 days on average.

Inzira 1/P_syn = 1/P_sid − 1/P_year

< guibutton > Aho: P_sid sidereal month, 27.322 days; P_year sidereal year, 365.256 days

Na:: Isidireal month

N

Na

ni i Gihinguranya Bya A Igicucu i Gishya Inkomoko ni Gihishwe; i ni i external Inzira% s ni Gihishwe.

Na:: Eclipse

I

Itandukanya

i Umuvuduko Ku Icyo ari cyo cyose Uburebure Kuva: i Ingano:. Bya.

Inzira v = √(μ (2/r − 1/a))

< guibutton > Aho: μ Ikintu; r current distance; a Umurongo fatizo

Na:: Ibara:, Umuvuduko

na Koresha ya:. OYA Byakoreshejwe ya: Ibuganya, Cyangwa Icyo ari cyo cyose. Kigenga na -. i Ibigize