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

47 Tuc is well placed

Dominic Ford, Editor
From the Deep Sky feed

Objects: NGC104
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Across much of the world, the second brightest globular cluster in the sky , 47 Tuc (NGC 104; mag 4.0), in Tucana will be well placed in the evening sky in coming weeks. On 27 September it will reach its highest point in the sky at around midnight local time, and on subsequent evenings it will culminate four minutes earlier each day.

From San Diego , however, it is not observable because it lies so far south that it never rises above the horizon.

At a declination of 72°04'S, it is easiest to see from the southern hemisphere but cannot be seen from latitudes much north of 2°S.

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 4.0, NGC104 is tricky to make out with the naked eye except from a dark site, but is visible through a pair of binoculars or small telescope.

The position of NGC104 is as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
NGC104 00h24m00s 72°04'S Tucana 4.0 0'00"

The coordinates above are given in J2000.0.

The sky on 27 Sep 2023

The sky on 27 September 2023
Twilight ends
Twilight begins

12-day old moon
Waxing Gibbous


12 days old

Rise Culm. Set
Mercury 05:21 11:40 17:59
Venus 03:20 09:52 16:24
Moon 17:55 23:44 05:42
Mars 07:54 13:37 19:21
Jupiter 20:32 03:14 09:56
Saturn 17:08 22:37 04:07
All times shown in PDT.


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)


San Diego



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