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Sections

Catalogues

Tools and Links

Concepts

Index

Illustration of a Comet

Location of the Galactic Nucleus

A Typical K-type Star

Life at the Vernal Equinox

Illustration of a Constellation, Leo

The Sky at the Northern Celestial Pole

Part of the Hyades in Taurus

Image of Titan, a moon of Saturn

The First Point of Aries

Location of the Vernal Equinox

Illustration of a Reflection Nebula

The Sun, Venus and Mercury

Diagram of the Northern Celestial Pole

Seeing a Light Year

Image of the Summer Solstice

Image of a Typical Open Cluster

Image of a Galaxy

#

2 Micron All-Sky Survey

A

B

Bright Star Catalogue

Barred Spiral Galaxy

Bright Yellow Stars

Bayer Designation

C

D

Deep Near Infrared Survey of the Southern Sky

Disc, Circumstellar

E

Earth-mass Planet

Elliptical Galaxy

Equinox, Vernal

Emission Nebula

Equator, Celestial

Ecliptic Pole, Northern

Equinox, Autumnal

Extrasolar Planet

F

First Point of Aries

Family, Constellation

Flamsteed Numbers

G

H

Henry Draper Catalogue

Heavenly Waters Family

Hercules Family

Hubble Classification

I

Index Catalogue

Interstellar Medium

Inner Solar System

Irregular Galaxy

Intermediate Spiral Galaxy

J

K

Kepler Input Catalogue

Kepler Object of Interest

Kuiper Belt, Classical Object

L

La Caille Family

Lenticular Galaxy

Luyten Half-Second Catalogue

M

Magnitude, Absolute

Melotte Catalogue

Magnitude, Apparent

Meridian, Celestial

Main Sequence Stars

Messier Catalogue

Magellanic Clouds

'Mel' Catalogue

N

O

Orbit, Retrograde

Orbital Eccentricity

Orbital Inclination

Optical Gravitational Lensing Experiment

P

Q

Quadrant, Celestial

R

Reflection Nebula

Right Ascension

Retrograde Motion

Retrograde Orbit

S

T

TESS Object of Interest

Terrestrial Planets

Two Micron All-Sky Survey

Tertiary System

U

Ursa Major Cluster

Ursa Major Family

V

Variable Stars, Pulsating

W

Winter Solstice

Wolf-Rayet Stars

Y

Yale Catalogue of Bright Stars

Yellow Stars (G-type)

Yellow Stars (F-type)

Z

#

2 Micron All-Sky Survey

A

A Catalogue of Star Clusters shown on Franklin-Adams Chart Plates

Absolute Magnitude

Absolute Temperature

Absorption Nebula

Apparent Magnitude

Apparent Retrograde Motion

Arcturian Stars

Aries, First Point of

Arm, Sagittarius

Arm, Scutum-Crux

Astronomical Unit

Autumnal Equinox

B

Barred Spiral Galaxy

Bayer Designation

Bright Star Catalogue

Bright Yellow Stars

C

Caldwell Catalogue

Canes Venatici Cloud

Canes Venatici I Group

Catalogue of stars with proper motions exceeding 0"5 annually

Celestial Equator

Celestial Meridian

Celestial Pole, Northern

Celestial Pole, Southern

Celestial Quadrant

Celestial Quadrant NQ1

Celestial Quadrant NQ2

Celestial Quadrant NQ3

Celestial Quadrant NQ4

Celestial Quadrant SQ1

Celestial Quadrant SQ2

Celestial Quadrant SQ3

Celestial Quadrant SQ4

Celestial Sphere

Circumstellar Disc

Classical Kuiper Belt Object

Cluster, Galactic

Cluster, Globular

Cluster, Ursa Major

Cluster of Galaxies

Collinder Catalogue

Constellation Family

Cosmic Background Radiation

D

Deep Near Infrared Survey of the Southern Sky

Disc, Circumstellar

E

Earth-mass Planet

Ecliptic Pole, Northern

Elliptical Galaxy

Emission Nebula

Equator, Celestial

Equinox, Autumnal

Equinox, Vernal

Extrasolar Planet

F

Family, Constellation

First Point of Aries

Flamsteed Numbers

G

Galactic Cluster

Galactic Nucleus

Galactic Pole, Northern

Gliese Catalogue

Gliese-Jahreiß Catalogue of Nearby Stars

Globular Cluster

Gravitational Lensing

Green Bank Equation

Group of Galaxies

H

Heavenly Waters Family

Henry Draper Catalogue

Hercules Family

Hubble Classification

I

Index Catalogue

Inner Solar System

Intermediate Spiral Galaxy

Interstellar Medium

Irregular Galaxy

J

K

Kepler Input Catalogue

Kepler Object of Interest

Kuiper Belt, Classical Object

L

La Caille Family

Lenticular Galaxy

Luyten Half-Second Catalogue

M

Magellanic Clouds

Magnitude, Absolute

Magnitude, Apparent

Main Sequence Stars

'Mel' Catalogue

Melotte Catalogue

Meridian, Celestial

Messier Catalogue

N

Nebula, Absorption

Nebula, Emission

Nebula, Planetary

Nebula, Reflection

New General Catalogue

North Polar Sequence

Northern Celestial Pole

Northern Ecliptic Pole

Northern Galactic Pole

NQ1, Celestial Quadrant

NQ2, Celestial Quadrant

NQ3, Celestial Quadrant

NQ4, Celestial Quadrant

Nubeculae Magellani

O

Optical Gravitational Lensing Experiment

Orbit, Retrograde

Orbital Eccentricity

Orbital Inclination

P

Pale Yellow Stars

Parallax Second

Planetary Nebula

Planets, Earth-mass

Planets, Jovian

Planets, Terrestrial

Precession Circle

Pulsating Variable

Q

Quadrant, Celestial

R

Reflection Nebula

Retrograde Motion

Retrograde Orbit

Right Ascension

S

S-type Asteroid

SAB-type Galaxy

Sagittarius Arm

Schwarzchild Radius

Scutum-Centaurus Arm

Scutum-Crux Arm

Semi-Major Axis

Sidereal Period

Silicaceous Asteroid

Solar System, Inner

Solstice, Summer

Solstice, Winter

Southern Celestial Pole

Southern Ecliptic Pole

Spectral Classification

SQ1, Celestial Quadrant

SQ2, Celestial Quadrant

SQ3, Celestial Quadrant

SQ4, Celestial Quadrant

Star-forming Region

Stellar Nursery

Stellar Parallax

Summer Solstice

T

Terrestrial Planets

Tertiary System

TESS Object of Interest

Two Micron All-Sky Survey

U

Ursa Major Cluster

Ursa Major Family

V

Variable Stars, Pulsating

W

Winter Solstice

Wolf-Rayet Stars

Y

Yale Catalogue of Bright Stars

Yellow Stars (G-type)

Yellow Stars (F-type)

Z

Indexes

Main Index

v2.1g

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