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Sky-Tonight.com / Nebulae and Deep-Sky Objects / NGC6638

NGC6638 Position and Visibility Tonight

Where is NGC6638 right now?

NGC6638 is located in the constellation Sagittarius. Although NGC6638 is currently 3° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:26 local time. At that moment, NGC6638 will be 27° above the horizon toward the south.

Open the interactive guide to NGC6638’s position and path tonight

NGC6638 visibility on 2026-09-07

NGC6638 Visible from sunset until early morning

NGC6638 rise and set timetable

	Time	Elevation
NGC6638 rise	13:59
Moonset	14:56	9°
Sunset	17:27	25°
Civil sunset	17:55	26°
Twilight start	18:26	27°
NGC6638 transit	18:33	27°
Astronomical observing session begins	18:58	27°
NGC6638 set	23:07
Moonrise, 21% illuminated	23:21	-2°
Astronomical observing session ends	03:13	-46°

Track NGC6638 Position Throughout the Night

← 7 September 2026 →

Time
Altitude
Azimuth

Shift the map to change the time and observe NGC6638 changing position in the night sky.

NGC6638 — Image Gallery

DSS Blue

Blue images highlight younger, hotter stars that emit strongly at blue wavelengths.

DSS Red

Red images reveal older, cooler stars and emission nebulae glowing strongly in hydrogen-alpha light.

DSS Near-Infrared

Near-infrared images penetrate dust that obscures visible light and reveal hidden structures.

DSS Composite Image

DSS color images combine blue, red and often near-infrared exposures into a composite view.

The images come from the Digitized Sky Survey 2 (DSS2), produced at the Space Telescope Science Institute (STScI) under contract with NASA, using data from UK Science and Technology Facilities Council (STFC), European Southern Observatory (ESO), National Geographic Society-Palomar Observatory Sky Survey (POSS II).

Special thanks to National Optical Astronomy Observatory (NOAO), Royal Observatory, Edinburgh, California Institute of Technology for their significant contributions.

Finder Chart for NGC6638

Double-click to unlock the map.

Object name	NGC6638
Field of view
Limiting magnitude
NGC6638 coordinates	18.51563, -25.49642
Center coordinates	18.51563, -25.49642

NGC6638 Passage Through Night

Double-click to unlock the map.

Current position of NGC6638

Time	14:19
Latitude	37.3541
Longitude	-121.955
Elevation	3°
Azimuth	126°

Here you can see the current position of NGC6638 on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.

When Is NGC6638 Visible Throughout the Year?

NGC6638 will remain visible until December 11, when it moves too close to the Sun and temporarily disappears from the night sky.

Date	Mon, 7 September 2026
Twilight start	18:54
Twilight end	03:07
Twilight duration	8h 13m
Rise	13:56
Set	23:03
Elevation at transit	27°
Transit time	18:29
Equatorial coordinates	RA: 18h 30m 56s", Dec: -25° 29' 47s
Magnitude	10
Constellation	Sagittarius

The graph illustrates the annual visibility pattern of NGC6638, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also see when NGC6638 is visible throughout the year in a table with exact rise, transit, and set times for each date.

Astrometric and Physical Parameters of NGC6638

Coordinates and Visibility

Right Ascension	18h 30m 56s
Declination	-25° 29′ 47″
Magnitude	9.68
Constellation	Sagittarius
Elevation	3.2°
Azimuth	125.8°

Data Credits

The deep-sky information on this page comes from the OpenNGC project developed by Matteo Verga. OpenNGC provides detailed catalog data for nebulae, galaxies, clusters and other deep-sky objects.

For details or contributions, visit the official repository: OpenNGC GitHub.

Observation Settings