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© 2026 Hindsite. UK publication.Composed by Claude · libel-checked · cited inline.

perihelion

140 sources spanning 1932–2023

In astronomy, an apsis, plural apsides (IPA: /apsɪdɪːz/) is the point of greatest or least distance of the elliptical orbit of an astronomical object from its center of attraction, which is generally the center of mass of the system. The point of closest approach is called the periapsis or pericentre and the point of farthest excursion is called the apoapsis (Greek από, from, which becomes απ before a vowel, and αφ before rough breathing), apocentre...

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Overview

In astronomy, an apsis, plural apsides (IPA: /apsɪdɪːz/) is the point of greatest or least distance of the elliptical orbit of an astronomical object from its center of attraction, which is generally the center of mass of the system. The point of closest approach is called the periapsis or pericentre and the point of farthest excursion is called the apoapsis (Greek από, from, which becomes απ before a vowel, and αφ before rough breathing), apocentre...

Hero image for perihelion — Pictured·Space·Happy Aphelion Day! Earth is at its farthest from the sun for 2023 today

2023

Earth Perihelion and Aphelion Calculator4 Oct 2023

Happy Aphelion Day! Earth is at its farthest from the sun for 2023 today6 Jul 2023

Interplanetary Astrodynamics15 Jun 2023

2021

NASA Lunar Exploration – Gateway's Power and Propulsion Element Communications LinksGOV27 Sep 2021

An L-class Multirole Observatory and Science Platform for Neptune18 Jun 2021

2019

Earth Fact SheetGOV22 Apr 2019

Earth Fact SheetGOV22 Apr 2019

2018

Mercury Fact SheetGOV27 Sep 2018

Mercury Fact SheetGOV27 Sep 2018

Venus Fact SheetGOV27 Sep 2018

Mars Fact SheetGOV27 Sep 2018

Jupiter Fact SheetGOV18 Jul 2018

Jupiter Fact SheetGOV18 Jul 2018

2014

apsida15 Jun 2014

perihel15 Jun 2014

afel15 Jun 2014

perigej15 Jun 2014

apogej15 Jun 2014

periaster15 Jun 2014

apoaster15 Jun 2014

2011

Variation in Times of Perihelion and AphelionGOV11 Aug 2011

2010

Earth's Seasons: Equinoxes, Solstices, Perihelion, and Aphelion, 2000-2020GOV10 Jun 2010

2009

Dense packings of the Platonic and Archimedean solids15 Jun 2009

Goniopolarimetric study of the revolution 29 perikrone using the Cassini Radio and Plasma Wave Science instrument high-frequency radio receiver4 Mar 2009

Goniopolarimetric study of the revolution 29 perikrone using the Cassini Radio and Plasma Wave Science instrument high-frequency radio receiver4 Mar 2009

2008

Earth at Aphelion15 Jul 2008

المورد الحديث: قاموس إنكليزي عربي15 Jun 2008

2007

Distance of closest approach of two arbitrary hard ellipses in two dimensions26 Jun 2007

2004

Unusually Dense Crystal Packings of Ellipsoids23 Jun 2004

2002

A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way17 Oct 2002

A star in a 15.2-year orbit around the supermassive black hole at the centre of the Milky Way17 Oct 2002

1987

Onsager's spherocylinders revisited10 Sep 1987

1985

Statistical mechanics of hard ellipsoids. I. Overlap algorithm and the contact function15 Jun 1985

1976

Effects of massive black holes on dense stellar systems.1 Sep 1976

Effects of massive black holes on dense stellar systems.1 Sep 1976

1972

Phase Transitions of the Classical Hard‐Ellipse System15 May 1972

1949

The Effects of Shape on the Interaction of Colloidal Particles15 Jun 1949

1932

A dictionary of the Kashmiri language15 Jun 1932

Undated

Earth-Moon Barycenter - SkyMarvels.com

Basics of Space FlightGOV

Apollo 15 Mission ReportGOV

MAVEN » Science Orbit

Dawn Journal: 11 Years in Space

the definition of apsis

Earth at Perihelion and Aphelion: 2001 to 2100

Solar System Exploration: Science & Technology: Science Features: Weather, Weather, Everywhere?GOV

How much does aphelion affect our weather? We're at aphelion in the summer. Would our summers be warmer if we were at perihelion, instead?

Data.GISS: Earth's Orbital ParametersGOV

NASA planetary comparison chartGOV

JPL SBDB: Hale-BoppGOV

101P/Chernykh – A (NK 1293) by Syuichi Nakano

Horizons Batch for 12P/Pons-Brooks (90000223) at 2024-Apr-21GOV

Horizons Batch for Eris at perihelion around 7 December 2257 ±2 weeksGOV

JPL SBDB: Eris (Epoch 2021)GOV

Horizons Batch for 4 Vesta on 2021-Dec-26GOV

JPL SBDB: 2015 TH367GOV

Apsis (Astronomie)

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NASA planétary comparison chartGOV

Venus Fact SheetGOV

Mars Fact SheetGOV

%D0%9F%D1%8D%D1%80%D1%8B%D1%86%D1%8D%D0%BD%D1%82%D0%B0%D1%80 %D1%96 %D0%B0%D0%BF%D0%B0%D1%86%D1%8D%D0%BD%D1%82%D0%B0%D1%80

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%D9%86%D8%B2%DB%8C%DA%A9%D8%AA%D8%B1%DB%8C%D9%86 %D9%88 %D8%AF%D9%88%D9%88%D8%B1%D8%AA%D8%B1%DB%8C%D9%86

Apsida (astronomie)

Apsis (astronomi)

Apsis (Astronomie)

Cálculo de la velocidad en órbitas elípticas+ 1 event

Perihelio, afelio y los solsticios

La Tierra en afelio

JPL SBDB: Hale-Bopp (Epoch 1996)GOV

Horizons Batch for Eris at perihelion around 7 December 2257 ±2 weeksGOV

Apsiid (astronoomia)

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Apsidi (t%C3%A4htitiede)

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%E0%A4%AE%E0%A4%A8%E0%A5%8D%E0%A4%A6

Perihelion and Aphelion

Apsida (astronomija)

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Apsido (astronomio)

N%C3%A1ndarsta%C3%B0a og fir%C3%B0sta%C3%B0a

NASA planetary comparison chartGOV

%E8%BF%91%E7%82%B9%E3%83%BB%E9%81%A0%E7%82%B9

%E1%83%90%E1%83%9E%E1%83%9D%E1%83%AA%E1%83%94%E1%83%9C%E1%83%A2%E1%83%A0%E1%83%98 %E1%83%93%E1%83%90 %E1%83%9E%E1%83%94%E1%83%A0%E1%83%98%E1%83%AA%E1%83%94%E1%83%9C%E1%83%A2%E1%83%A0%E1%83%98

%D0%90%D0%BF%D0%BE%D1%86%D0%B5%D0%BD%D1%82%D1%80 %D0%B6%D3%99%D0%BD%D0%B5 %D0%BF%D0%B5%D1%80%D0%B8%D1%86%D0%B5%D0%BD%D1%82%D1%80

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Apsid%C4%97 (astronomija)

%D0%90%D0%BF%D1%81%D0%B8%D0%B4%D0%B0 (%D0%B0%D1%81%D1%82%D1%80%D0%BE%D0%BD%D0%BE%D0%BC%D0%B8%D1%98%D0%B0)

%E0%B4%85%E0%B4%AA%E0%B4%B8%E0%B5%97%E0%B4%B0%E0%B4%82

%E0%A4%89%E0%A4%AA%E0%A4%A8%E0%A4%BE%E0%A4%AD%E0%A5%80 %E0%A4%AC%E0%A4%BF%E0%A4%82%E0%A4%A6%E0%A5%82

Apollo 15 Mission ReportGOV

salinan arkibGOV

Apsis (Astronomie)

Apsis i astronomi

Apsis (astronomi)

Apsyda (astronomia)

Solex by Aldo Vitagliano

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Apsida (astronomija)

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Apsida (astron%C3%B3mia)

Apsidna to%C4%8Dka

Apsida (astronomija)

perihelion — Hindsite — Hindsite