When is the best time to observe NGC 7140?

NGC 7140 is best observed from July through September, with peak visibility during August when it transits around midnight in the Northern Hemisphere.

Where is NGC 7140 located in the sky?

NGC 7140 lies in the constellation Indus at right ascension 21h 52m and declination -55° 34′.

What telescope do I need to see NGC 7140?

At magnitude 11.7, NGC 7140 is best observed with a 6-inch (150 mm) or larger telescope.

NGC 7140 — Galaxy in Indus

Galaxy Good (40/100)

Barred Spiral

Magnitude 11.7^m Galaxy Indus (Ind) Visible

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1Properties

Magnitude 11.68

Angular Size 3.0′ × 2.1′

Position Angle 18°

Distance 139.01 million ly

Galaxy Type Barred Spiral (SABb)

Description

pF, cS, R, bM; = 7141

Position & Identifiers

RA 21h 52m 18.0s

Dec -55° 34' 00.0"

Constellation Indus (Ind)

Catalog NGC 7140

2How easy to spot?

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Telescope	Bortle 3	Bortle 4	Bortle 5
80 mm refractor 80mm refr.	Hard	Hard	V. hard+
150 mm Newton 150mm Newt.	Medium	Medium	Hard+
Celestron C8 (203 mm SCT) C8 203mm	Medium+	Medium	Medium

Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

Medium on Seestar S50

3Visibility

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Best season Jul – Sep (peak: Aug)

4 Eyepiece View

Telescope Eyepiece

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125x TFOV: 0.4° Lim. mag: 13.6

Seeing Bortle

NGC 7140 · 3.0′×2.1′ · N up, E left

5 Best Magnification

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6 Surface Brightness

7 Morphology Decoder

8 Inclination & True Shape

9 Redshift

10 Size Comparator

Discover

11

Light Travel Time Machine

12

Relativistic Travel

Nearby in the Sky

Other targets within a few degrees — pan your scope a little and keep exploring.

Visibility scores assume a 150 mm Newton at Bortle 4.

NGC 7090

Hard+

Edge-on galaxy

Galaxy mag 11.0 2.5° Indus

NGC 7168

Hard+

Elliptical galaxy

Galaxy mag 13.0 4.1° Indus

Theta Ind

Easy

Easy double, sep 7.3″

Double Star mag 4.39 5.2° Indus

NGC 7196

Medium+

Elliptical galaxy

Galaxy mag 11.5 5.8° Indus

NGC 7200

Hard+

Elliptical galaxy

Galaxy mag 12.86 6.0° Indus

Nu Tuc

Medium

Semi-regular variable, range 4.7–5.2

Variable Star mag 4.81 8.3° Tucana

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