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

M55 is well placed

Sun, 16 Jul 2017 (185 days ago)

Dominic Ford, Editor
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Across much of the world the globular cluster M55 (NGC 6809) in Sagittarius will be well placed for observation. It will reach its highest point in the sky at around midnight local time.

At a declination of -30°58', it is easiest to see from the southern hemisphere but cannot be seen from latitudes much north of 39°N.

From Ashburn (click to change), it will not be readily observable since it will lie so far south that it will never rise more than 19° above the horizon.

At magnitude 7.0, M55 is quite faint, and certainly not visible to the naked eye, but can be viewed through a pair of binoculars or small telescope.

The position of M55 is as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
M55 19h40m00s -30°58' Sagittarius 7.0 19'00"

The coordinates above are given in J2000.0.

The sky on 16 July 2017
Sunrise 05:56
Sunset 20:33
Twilight ends
Twilight begins

22-day old moon
Age of Moon
22 days

All times shown in EDT.
Rise Culm. Set
Mercury 07:53 14:52 21:50
Venus 03:05 10:17 17:29
Moon 00:36 06:49 13:02
Mars 06:10 13:29 20:48
Jupiter 12:39 18:27 00:18
Saturn 18:08 22:55 03:46


The circumstances of this event were computed using the DE405 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)




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