© Digitised Sky Survey (DSS); Second Palomar Observatory Sky Survey (POSS-II)

NGC 6633 is well placed

Dominic Ford, Editor
From the Deep Sky feed

Objects: NGC6633
Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
The sky at

The open star cluster NGC 6633 (mag 4.6) in Ophiuchus will be well placed, high in the sky. It will reach its highest point in the sky at around midnight local time.

At a declination of 6°30'N, it is visible across much of the world; it can be seen at latitudes between 76°N and 63°S.

From Ashburn, it will be visible all night. It will become visible around 22:00 (EST), 37° above your south-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 01:06, 57° above your southern horizon. It will be lost to dawn twilight around 04:28, 34° above your western horizon.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

At magnitude 4.6, NGC6633 is too faint to be seen with the naked eye from any but the very darkest sites, but is visible through a pair of binoculars or small telescope.

The position of NGC6633 is as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
NGC6633 18h27m10s 6°30'N Ophiuchus 4.6 26'59"

The coordinates above are given in J2000.0.

The sky on 30 June 2023
Twilight ends
Twilight begins

12-day old moon
Waxing Gibbous


12 days old

Rise Culm. Set
Mercury 05:40 13:10 20:40
Venus 09:16 16:10 23:04
Moon 18:03 22:51 03:33
Mars 09:31 16:23 23:16
Jupiter 02:19 09:06 15:54
Saturn 23:48 05:16 10:44
All times shown in EDT.


The circumstances of this event were computed using the DE430 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Image credit

© Digitised Sky Survey (DSS); Second Palomar Observatory Sky Survey (POSS-II)






Color scheme