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Either of two extreme points in a celestial object's orbit
An apsis (from Ancient Greek ἁψίς (hapsís) 'arch, vault' (third declension); pl. apsides /ˈæpsɪˌdiːz/ AP-sih-deez) is the farthest or nearest point in
Apsis
Semicircular recess covered with a hemispherical vault or semi-dome
from Latin absis, 'arch, vault'; from Ancient Greek ἀψίς, apsis, 'arch'; sometimes written apsis; pl.: apsides) is a semicircular recess covered with a hemispherical
Apse
APSI (an abbreviation of "Agencia Publicitaria de Servicios Informativos") was a Chilean magazine aimed as means of political opposition to the Pinochet
APSI
Topics referred to by the same term
Look up apse, apses, apsis, apside, apsides, or apsidal in Wiktionary, the free dictionary. The apse or apsis or apside (plural: apses or apsides) are
Apse_(disambiguation)
Specifies the orbit of an object in space
argument of periastron (for orbits around stars), and so on, may be used (see apsis for more information). An argument of periapsis of 0° means that the orbiting
Argument_of_periapsis
Topics referred to by the same term
Look up perigee in Wiktionary, the free dictionary. Perigee is a type of apsis: an extreme point in an object's orbit. Perigee may also refer to: Perigee:
Perigee_(disambiguation)
Branch of engineering
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Aerospace_engineering
Mathematical equation describing the motion of a rocket
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Tsiolkovsky_rocket_equation
Former cathedral in Florence, Italy
constructed in east–west direction (from the Piazza dell'Olio to the area of the apsis of the Duomo), which was traditionally considered the cult area in Late
Santa_Reparata,_Florence
Curved path of an object around a point
Aeronautics and Space Administration. p. 20. Fairbridge, R. W. (1997). "Apsis, apsides". Encyclopedia of Planetary Science. Encyclopedia of Earth Science
Orbit
Optical illusion
perspective in the Roman Emperor Constantine's Aula Palatina, Trier: The windows and the coffer in the apse are smaller, and the apsis has a raised floor.
Forced_perspective
Motion problem in classical mechanics
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Two-body_problem
Full or new moon which appears larger
explained in 2011 that he based calculations on 90% of the difference in lunar apsis extremes for the solar year. In other words, a full or new moon is considered
Supermoon
Topics referred to by the same term
Look up apogee in Wiktionary, the free dictionary. Apogee is a type of apsis: an extreme point in an object's orbit. Apogee may also refer to: Apogee
Apogee_(disambiguation)
Horse race
(2000), Cacique (2005), Apsis (2006), Byword (2011), Fintry (2015) Leading owner (4 wins): Khalid Abdullah – Cacique (2005), Apsis (2006), Byword (2011)
Prix_Bertrand_du_Breuil
University and academic publisher
"Centro SInAPSi. Sostenere e favorire l'inclusione | In Ateneo". www.unina.it. "La struttura" (in Italian). "Carta dei Servizi di SInAPSI". Archived from
University of Naples Federico II
University_of_Naples_Federico_II
Hindu god of the Moon
the Moon's mean longitude, a is the longitude at apogee, P is epicycle of apsis, R=3438'. Besides worship in Navagraha temples, Chandra is also worshipped
Chandra
Form of ecclesiastical income in the Catholic Church
Seat of the Bishop of Rome in the apsis of the Archbasilica of Saint John Lateran
Mense
Ziggurat in ancient Babylon
There is no reason to doubt that this ziqqurrat, described as ziqqurrat apsî elite, "the upper ziqqurrat of the Apsû", was [Etemenanki]. Babylon was destroyed
Etemenanki
Monastery in Georgia (country)
eastern façade has a decorative knob. Each of the three facets of the eastern apsis has a bas-relief, depicting rulers and noblemen. The left shows Demetre
Jvari_Monastery
Region in space where a satellite orbit is stable
in the fact that the satellite with an eccentric orbit is safer with its apsis pointing up or down, than pointing in the plane of the planet's orbit. The
Laplace_sphere
Orbit in which natural drifting has been minimized
over a long period of time. Variations in the inclination, position of the apsis of the orbit, and eccentricity have been minimized by choosing initial values
Frozen_orbit
Topics referred to by the same term
an anomaly of an elliptical orbit, generally measured with respect to an apsis, usually the periapsis Anomalous precession, another term for "apsidal precession"
Anomaly
published drawings in APSI in the 1980s. On one occasion a picture of dictator Pinochet posing as Louis XIV led the whole staff of APSI to be imprisoned and
Guillo
Comune in Sicily, Italy
Christus Pantokrator in the apsis of the cathedral
Cefalù
Horizontal angle from north or other reference cardinal direction
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Azimuth
Hindu deity associated with Saturn
revolutions on its own axis every 4,320,000 earth years, an Epicycle of Apsis as 60 degrees, and had an apogee (aphelia) of 240 degrees in 499 CE; while
Shani
The Arctic Planetary Science Institute, or APSI (Finnish: (unofficially) Arktinen planeettatutkimusinstituutti) is an independent organization dedicated
Arctic Planetary Science Institute
Arctic_Planetary_Science_Institute
Persian polymath, physician and philosopher (c. 980–1037)
into conformity". For example, ibn Sina considers the motion of the solar apsis, which Ptolemy had taken to be fixed. Avicenna was first to derive the attar
Avicenna
Kepler orbit with an eccentricity of less than one
Newton explained this as a corollary of his law of universal gravitation. Apsis Characteristic energy Ellipse List of orbits Orbital eccentricity Orbit
Elliptic_orbit
Concept in astrodynamics
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Hyperbolic_trajectory
Time between successive new moons
3,233 days (8.85 years). It takes the Moon longer to return to the same apsis because it has moved ahead during one revolution. This longer period is
Lunar_month
Angle between a reference plane and the plane of an orbit
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Orbital_inclination
Byzantine cathedral in Poreč, Croatia
In the middle stands the bishop's throne, flanked by candlesticks. The apsis is dominated by the marble ciborium, modelled after the one in St. Mark's
Euphrasian_Basilica
Australian skier & sighted guide (born 1994)
4 Australian Professional Snowsport Instructors Inc (APSI) and is a Level 1/2 Trainer for APSI. Kelly is the guide for Paralympic skier Melissa Perrine
Bobbi_Kelly
Building with a circular ground plan
AD. Several Armenian built rotunda churches have sixfold arched central apsis, i.e. at Aragatz, Bagaran, Bagnayr, Botshor, Kiagmis Alti in Armenia. At
Rotunda
Church in Salzburg, Austria
und Benefizkonzert in der Salzburger Kollegienkirche. Fertigstellung der Apsis als wichtige Etappe der Innenrestaurierung. Bundesdenkmalamt, retrieved
Kollegienkirche,_Salzburg
Municipality in Zadar County, Croatia
century, with a Gothic dome dated 1440. It has a single nave which ends in an apsis, as well as a bell tower which was also built later. At the end of the 19th
Škabrnja
Hindu deity
completes 364,220 revolutions every 4,320,000 earth years, an Epicycle of Apsis as 32 degrees, and had an apogee (aphelia) of 160 degrees in 499 CE; while
Brihaspati
Place in Veszprém, Hungary
On this strong basement of the eastern apsis the later tower was built both in Zánka and at Hidegség. This apsis type can be found in the Pontian region
Zánka
January 2023). "Identification of late-type Class I stars using Gaia DR3 Apsis parameters". Astronomy & Astrophysics. 671: A148. arXiv:2301.07415. Bibcode:2023A&A
List_of_largest_stars
Property of a dynamical system where solutions near an equilibrium point remain so
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Lyapunov_stability
Component of an orbit
pointing into the direction of the vernal equinox). Apsidal precession Apsis Eccentricity (orbit) Orbit: circular, elliptic, parabolic and hyperbolic
Apse_line
Time an astronomical object takes to complete one orbit around another object
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Orbital_period
Commercial shipyard in Philadelphia
name to Philly Shipyard ASA. Accordingly, Aker Philadelphia Shipyard, Inc.(APSI), the sole operating subsidiary of AKPS, likewise changed its name to Philly
Hanwha_Philly_Shipyard
Transfer manoeuvre between two orbits
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Hohmann_transfer_orbit
Amount by which an orbit deviates from a perfect circle
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Orbital_eccentricity
Mobile phone with photographic capability
integrated camera. The Thuraya SG-2520 was manufactured by Korean company APSI and ran Windows CE. In 2008, Nokia sold more camera phones than Kodak sold
Camera_phone
Clade of tetrapods
prehistoric vertebrates Greek: συν-, romanized: syn-, lit. 'together' + ἁψίς (apsís, 'arch') > *συναψίδης (synapsídes) "having a fused arch"; synonymous with
Synapsida
US–USSR spaceflight capability rivalry
mission demonstrated the ability to adjust the crafts' inclination and apsis without issue. Gemini 5 demonstrated eight-day endurance, long enough for
Space_Race
Greek Orthodox monastery in Constantinople
Stoudios Street view of the monastery Exterior walls of the monastery The Apsis The entrance of the İmrahor İlyas Bey mosque Groundplan of the monastery
Monastery_of_Stoudios
Problem in physics and celestial mechanics
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N-body_problem
Space exploration program conducted by the Soviet Union from 1951 to 1991
the first satellites capable of adjusting both orbital inclination and Apsis. This marked a significant step in the potential use of spacecraft in Anti-satellite
Soviet_space_program
Church building in Mitte, Germany
typical for the Evangelical churches of the end of the 19th century. The apsis painting displayed an enthroned Jesus of Nazareth in a mandorla surrounded
Capernaum_Church
Dictator of Chile from 1973 to 1990
When the admiration of Louis XIV surfaced in a 1986 interview it provoked APSI to publish a graphic satire made by Guillo which showed Pinochet dressed
Augusto_Pinochet
Term in geometry; longest and shortest semidiameters of an ellipse
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Semi-major and semi-minor axes
Semi-major_and_semi-minor_axes
Type of spacecraft maneuver
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Oberth_effect
Process that leads to gradual decrease of the distance between two orbiting bodies
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Orbital_decay
American Pacific Islander fraternity
Alpha Psi Rho (ΑΨΡ), also known as APsiRho, is an Asian and Pacific Islander-interest fraternity founded at San Diego State University in 2000. It has
Alpha_Psi_Rho
Cultural Monument in Durrës, Albania
Church, Durrës Kisha e Shën Ndojt (Albanian) East side of the building with apsis Interactive map of St. Anthony Church, Durrës 41°34′59″N 19°27′30″E / 41
St._Anthony_Church,_Durrës
Chilean political scientist, diplomat and minister
of Chile. He served on the editorial boards of the magazines Análisis and APSI. During the 1988 Chilean national plebiscite, he played a leading role in
Juan_Gabriel_Valdés
Point where an orbit crosses a plane of reference to which it is inclined
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Orbital_node
Chinese satellite internet constellation
Name Number of satellites Launch (UTC) Orbit Orbital apsis Inclination SCN COSPAR ID Launch site Launcher Status G60 Polar Group 01 18 6 August 2024 06:42
Qianfan
Concept in gravitational orbital mechanics
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Vis-viva_equation
the port had been updated to version 4.5". FreeBSD. Retrieved 2023-02-26. Apsis GmbH, original upstream, had stopped the development and welcomed Sergey
Pound_(networking)
Concept in aerospace engineering
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Propellant_mass_fraction
Graeco-Egyptian deity
Babylonian god Ea (Enki) was titled Šar Apsi, meaning 'king of the Apsu' or 'the watery deep', and Ea as Šar Apsi seems to be the deity intended in the
Serapis
Specifies the orbit of an object in space
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Mean_anomaly
Flight event at some distance from the object
comet’s nucleus becomes exposed to sunlight. Aerobraking Aerogravity assist Apsis Deliberate crash landings on extraterrestrial bodies ('fly-in') Flight dynamics
Flyby_(spaceflight)
Oldest Lutheran church in Schwabing
pulpit are made from yellowish marble from Verona. The large painting in the apsis was created by Linda Kögel. Jesus on a throne, surrounded by angels, sits
Erlöserkirche,_Munich
Television series
their latest agenda for world domination. 5 "Dreamland" Winrich Kolbe Steve Apsis November 2, 1996 (1996-11-02) Early March, 1964: Following a lead to Las
Dark_Skies
Equilibrium points near two orbiting bodies
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Lagrange_point
Physical presence of human activity in outer space
breaking speed records with its very low solar altitudes at perihelion apsis. Future direct human presence beyond Earth's orbit is possibly going to
Human_presence_in_space
Center of mass of multiple bodies orbiting each other
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Barycenter_(astronomy)
Church in Rome, Italy
San Teodoro may have been built as early as the 6th century as well. Its apsis mosaic dates to the 6th century and shows Christ in a black robe with gold
San_Teodoro,_Rome
Laws describing planetary orbits
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Kepler's laws of planetary motion
Kepler's_laws_of_planetary_motion
Concept in celestial mechanics
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Escape_velocity
Speed at which a body orbits around the barycenter of a system
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Orbital_speed
Geometric pattern used in art
the Temple of Osiris in Abydos, Egypt 19-circle window at the southern apsis of the church of Preveli Monastery (Moni Preveli), Crete 19-circle pattern
Overlapping_circles_grid
Roman Catholic church in Kraków, Poland
vault. Presbytery was elongated beginning in 1401 with the three-sided apsis (pictured). The cross-shaped central part with nave arcades was added around
Basilica of St. Francis of Assisi, Kraków
Basilica_of_St._Francis_of_Assisi,_Kraków
Region of space gravitationally dominated by a given body
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Sphere of influence (astrodynamics)
Sphere_of_influence_(astrodynamics)
Town in Pest county, Hungary
nave of the church. The recent church was built by the eastern extension (apsis) and by western extension (nave and choir) of the original rotunda. The
Isaszeg
Spaceflight operation
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Orbit_insertion
Experiments proving existence of atomic nuclei
and S as its external focus. The atomic nucleus is located at S. A is the apsis, the point of closest approach. b is the impact parameter, the lateral distance
Rutherford scattering experiments
Rutherford_scattering_experiments
Orbital mechanics term
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Kepler's_equation
Law enforcement agency for Kerala, India
Insignia No insignia Rank Armed Police Sub Inspector Armed Police Assistant Sub Inspector Havildar Armed Police Constable Abbreviation APSI APASI Hdr. PC
Kerala_Police
Chilean lawyer, economist, writer and politician
Pensamiento Socialista, Convergencia, La Época, La Tercera, El Mercurio, Ercilla, APSI, Análisis, El Mostrador, Rocinante, Asuntos Públicos, "Punto Final", La Nación
Jorge_Arrate
French cartoonist (1938–1998)
ISBN 978-0-300-21068-2. Retrieved 8 November 2025. APSI: actualidad nacional e internacional (in Spanish). APSI. 1987. Retrieved 8 November 2025. Official Claude
Claude_Serre
Cold War events
el caso "uvas chilenas envenenadas" de 1989 desde las revistas Análisis, APSI, Cauce y Hoy". Cuadernos de Historia (in Spanish) (62): 119–144. doi:10.5354/0719-1243
United States involvement in regime change in Latin America
United_States_involvement_in_regime_change_in_Latin_America
Musical artist
With Dave Rempis Aphelion (Aerophonic, 2014) Perihelion (Aerophonic, 2016) Apsis (Aerophonic, 2019) With others Fred Anderson, From the River to the Ocean
Joshua_Abrams_(musician)
Immune system protein
codes 2LRI, 1XWH, 2KE1, 2KFT Identifiers Aliases AIRE, AIRE1, APECED, APS1, APSI, PGA1, autoimmune regulator External IDs OMIM: 607358; MGI: 1338803; HomoloGene:
Autoimmune_regulator
French mathematician, astronomer, and geophysicist (1713–1765)
Newtonian in character. This contains the explanation of the motion of the apsis. It occurred to him to carry the approximation to the third order, and he
Alexis_Clairaut
Church in Belgrade, Serbia
was placed on the 30 metres (98 ft) tall ceiling above the altar and its apsis. It depicts Christ Enthroned, with two ethereal angels hovering above him
Church of Saint Mark, Belgrade
Church_of_Saint_Mark,_Belgrade
Angle of attack — Angular momentum — Angular velocity — Antimatter rocket — Apsis — Arcjet rocket — Areal velocity — ARP4761 — Aspect ratio (wing) — Astrodynamics
Index of aerospace engineering articles
Index_of_aerospace_engineering_articles
Sumerian exorcism
Mîs-pî (Washing of the mouth) Nišûtu ēní (enthronement of a priest) Amāt Apsî (Formulae of the Apsu) † Ginutaqū (Touching of the reed) † Šuluḫḫē ilī (Ablution
Ḫulbazizi
Early medieval Lombard stonemasons
Portion of the carvings of the choir apsis of the church at Königslutter
Comacine_masters
Branch of astronomy
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Celestial_mechanics
Cycle of Satya, Treta, Dvapara and Kali yugas (ages) in Hindu cosmology
and forty-six thousand, five hundred and sixty-eight; (33) Of the moon's apsis (ucca), in an Age, four hundred and eighty-eight thousand, two hundred and
Yuga_cycle
approach of one celestial object to another, as viewed from a third body. apsis In the orbit of a planetary body, one of the two extreme points of distance
Glossary_of_astronomy
Municipality in Salzburg, Austria
1540. The left nave has a small altar dedicated to St Sebastian in its apsis. The Grand Hotel Zell am See is a 4-star hotel and a landmark for the town
Zell_am_See
APSIS
APSIS
APSIS
APSIS
Boy/Male
Tamil
Manusri | மாஂநà¯à®¸à®°à¯€
Goddess Lakshmi
Surname or Lastname
English
English : habitational name from Pennywell in Tyne and Wear or from a similarly named lost place elsewhere.
Female
German
 Feminine form of German Wilhelm, WILHELMINA means "will-helmet."
Boy/Male
Muslim
Joy, Happiness
Girl/Female
Indian
The Sun, Lord Shiva
Female
Hebrew
(לִי×ï‹×¨Ö´×™×ª) Feminine form of Hebrew unisex Lior, LIORIT means "my light."
Boy/Male
Indian
Eternal lamp, Gods lamp
Girl/Female
Australian, Finnish
Gift of God
Female
Czechoslovakian
, happy glory.
Female
English
English variant spelling of German Elise, ELYSE means "God is my oath."
APSIS
APSIS
APSIS
APSIS
APSIS
n.
In a curve referred to polar coordinates, any point for which the radius vector is a maximum or minimum.
n.
Same as Apse.
pl.
of Apsis
n.
See Apsis.
n.
One of the two points of an orbit, as of a planet or satellite, which are at the greatest and least distance from the central body, corresponding to the aphelion and perihelion of a planet, or to the apogee and perigee of the moon. The more distant is called the higher apsis; the other, the lower apsis; and the line joining them, the line of apsides.
v. i.
To go back; to retrograde, as the apsis of a planet's orbit.
n. pl.
See Apsis.