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Plan

  • Tonight
  • Night Outlook
    • Weather
  • Targets
    • Saved targets
  • Plan a night
  • Night plans
    • Logbook

Tools

  • Sky atlas
  • Field of View
  • Exposure Lab
  • Calculators
  • Horizon Studio
  • Sequence Studio
    • Nights
    • Projects

Setup

  • Settings
  • About & Support
  • What’s new

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TargetsSaved targetsDeep-Sky Guide
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  1. Targets
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  3. NGC 4378

 

NGC 4378

Set a site to see tonight's sky

When NGC 4378 is up, how long it stays usable and when it is in season all depend on where you observe from. Set your site and this page adds tonight's answer and its year.

Set it on Tonight

The science

What you are looking at

In one sentence

A gravitationally bound system of stars, gas and dust.

Class explainer for galaxy (catalogue type).

The facts

NGC 4378 is a galaxy in Virgo. SIMBAD gives its distance as 48.5288 Mpc — ≈ 158,280,000 ly, measured by its redshift from 5 measurements. The light reaching us from it now left it about 158.3 million years ago, while dinosaurs walked the Earth. SIMBAD measures it at 2.6′ × 2.1′ on the sky — 8% of the full Moon's width. At that distance, that angle means it is roughly 119,200 light-years across. Framing uses its catalogue size instead: 2.1′. It is receding from us at about 2,562 km/s (redshift z = 0.0086). Its morphological type is Sa. It shines at magnitude 11.3.

Sources: AstroBrain catalogue; CDS/SIMBAD astronomical database, Strasbourg (SIMBAD record NGC 4378 · distance from 2019A&A...631A..38L). Contains information from SIMBAD, which is made available here under the Open Database License (ODbL). Download the SIMBAD-derived data.

For scale

Full Moon · 31′NGC 4378 · 2.6′
Angular size, as it would sit on your sky.
Milky Way · ~100,000 lyNGC 4378 · ~119,200 ly
True width compared with our Galaxy's disc (≈100,000 ly, a round figure).

The same patch of sky in visible light

  • Sky image

    Observatory photos and open-licence sky surveys.

    Credits on each image.

Neighbours in the sky

  • NGC 43240.6° away
  • M610.9° away
  • NGC 43391.2° away
  • NGC 42811.3° away
  • NGC 44571.6° away
  • NGC 42611.7° away

Sky maths: apparent positions with refraction, one-minute steps; usable = full astronomical dark, at least 30° up and clear of your skyline. Survey images: CDS, Strasbourg (DSS2 and other surveys). Science: SIMBAD. The hours, heights and Moon on this page use no weather forecast; the rank is this target’s place in the Targets list, whose score also counts the cloud forecast when there is one.

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