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User:IanOsgood/List of astronomical objects by angular size

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This table shows the angular sizes of the larger astronomical objects as seen from the Earth:

TODO: other columns? distance, RA/DEC

  Galaxy   Nebula   Open cluster   Globular cluster

Object Angular size Magnitude
Galactic Bulge 25° × 10° ?
Canis Major Dwarf Galaxy 12°
Large Magellanic Cloud 10°.75 × 9°.17 0.9
Barnard's Loop 10°
Centaurus A (radio lobes) 10° × 4°
Vela Supernova Remnant 8° 12
Sagittarius Dwarf Elliptical Galaxy 450′ × 216′
Coalsack Nebula 7° × 5°
Rho Ophiuchi cloud complex 6.5° × 4.5°
Large Sagittarius Star Cloud 6° × 4°
Small Magellanic Cloud 5° 20′ × 3° 5′ 2.7
Hyades (star cluster) 330′ 0.5
Andromeda Galaxy 190′ × 60′ 3.4
Simeis 147 3°
Veil Nebula/Cygnus Loop 180′ 7.0
Witch Head Nebula 180′ × 60′
California Nebula 150′ × 40′ ? 6.0
Carina Nebula 120′ 1.0
North America Nebula 120′ × 100′ 4.0
W50 120′ × 60′
Beehive Cluster 95′ 3.7
Small Sagittarius Star Cloud 2° × 1° 2.5
Lagoon Nebula 90′ × 40′ 6.0
Messier 7 80′ 3.3
Rosette Nebula 1.3° 9.0
Pleiades (star cluster) 75′ × 50′ ? 2.8 - 5.6
Triangulum Galaxy 70.8′ × 41.7′ 6.27
Orion Nebula 65′ 3.0
Lambda Orionis 60′
Brocchi's Cluster 60′ 3.6
Puppis A 60′
Heart Nebula 60′ 18.3
NGC 6357 1º
Pelican Nebula 60′ × 50′
Double Cluster 60′ × 30′ 4.3
Messier 48 54′ 5.5
IC 443 50′
Cave Nebula 50′ × 30′
Trapezium Cluster 47′ 4.0
IC 4665 45′ 8.27
RCW 86 40′
Sharpless 308 40′
NGC 6820 and NGC 6823 40′
NGC 1973, NGC 1975 and NGC 1977 40′ × 25′ 7
Tarantula Nebula 40′ × 25′ 8
Soul Nebula 40′ × 10′
Sculptor Dwarf Galaxy 39′.8 × 30′.9 10.1
Messier 41 38′ 4.5
IC 405 37′ × 10′
Omega Centauri 36.3′ 3.7
Messier 4 36′ 7.12
SN 1006 36′
Draco Dwarf 35.5′ × 24.5′ 10.9
Messier 34 35′ 5.5
NGC 281 35′
NGC 55 32'.4 × 5'.6 8.8
Sun 31.6' – 32.7'
Messier 22 32′ 6.17
Messier 25 32′ 4.6
Messier 39 32′ 4.6
NGC 6397 32′ 6.68
Moon 29.3′ – 34.1' -12.74 (full)
47 Tucanae 30′.9 4.91
Ursa Minor Dwarf 30′.2 × 19′.1 11.9
Flame Nebula 30′
NGC 1435 30′ 13
Messier 47 30′ 4.2
Messier 67 30′ 6.1
NGC 2736 30′ × 7′
Pinwheel Galaxy 28′.8 × 26′.9 8.3
Messier 35 28′ 5.3
Sculptor Galaxy 27′.5 × 6′.8 8.0
Messier 23 27′ 6.9
Messier 46 27′ 6.1
NGC 6633 27′ 4.6
Messier 81 26.9′ × 14.1′ 7.89
Boötes Dwarf Galaxy 26′.0 ± 1′.4 13.1
Centaurus A 25′.7 × 20′.0 7.8
Helix Nebula 25′ 13.5
Butterfly Cluster 25′ 4.2
NGC 7380 25′ 7.2
Messier 37 24′ 6.2
NGC 2244 24′ 4.8
Carina Dwarf 23′.4 × 15′.5 11.3
Messier 5 23′ 6.65
Messier 13 23′ 5.8
Messier 93 22′ 6.0
NGC 300 21′.9 × 15′.5 9.0
NGC 2403 21′.9 × 12′.3 8.9
Messier 110 21.9′ × 11.0′ 8.92
NGC 4236 21′.9 × 7′.2 10.5
IC 342 21′.4 × 20′.9
NGC 247 21′.4 × 6′.9 9.9
Messier 38 21′
NGC 6752 20′.4 5.4
Trifid Nebula 20′ 6.3
NGC 2264 20′ 3.9
Messier 10 20′ 6.6
Messier 43 20′x15′ 9.0
NGC 4945 20′.0 × 3′.8 9.3
NGC 3109 19′.1 × 3′.7 10.4
Messier 55 19′ 7.42
NGC 4372 18.6′
Messier 106 18′.6 × 7′.2 9.1
NGC 3201 18′.2 6.75
Iris Nebula 18′ 6.8
Messier 3 18′ 6.19
Messier 15 18′ 6.2
Crescent Nebula 18′ × 12′
Palomar 12 17′.4 11.99
Messier 19 17′ 6.8
Messier 2 16′ 6.3
Messier 12 16′ 6.7
Messier 50 16′ 5.9
NGC 4565 15′.90 × 1′.85 10
NGC 6822 15′.5 × 13′.5 9.3
NGC 4631 15′.5 × 2′.7 9.8
Messier 26 15′ 8.0
NGC 3628 15′ × 3′.8 9.5
Wild Duck Cluster 14′ 6.3
NGC 288 13′.8
NGC 891 13′.5 × 2′.5 10.8
Messier 9 12′ 7.7
Messier 14 11′ 7.6
NGC 6946 11′ × 10′ 8.9
Messier 82 11′.2 × 4′.3 8.41

Planets

[edit]

The planets of the solar system appear significantly smaller.

Object Angular size Magnitude
ISS ~60″ max
Jupiter 30″ – 49″
Rings of Saturn 34″ – 46″
Venus 10″ – 66″
Saturn 15″ – 20″
Mars 4″ – 25″
Mercury 5″ – 13″
Uranus 3″ – 4″
Neptune 2″
Ceres 0.8″
Pluto 0.1″
Eris 40 mas

Stars

[edit]

The largest stars appear smaller still. The two largest below are red giants at some distance, whereas the last two are sun-sized stars at very close distance.

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