Observer's guide
About IC 4725
IC 4725 (M25) is catalogued as an open cluster in Sagittarius. Its J2000 position is RA 18:31:46.77, Dec -19:06:53.8, corresponding to 277.9371 degrees RA and -19.1139 degrees Dec. The local catalogue places it about 2,000 light-years away. Its referenced angular extent is approximately 31.3 by 31.3 arcminutes.
Observing tips
StarWatchr rates this as an easy target at magnitude 6.5. It is associated with summer observing, with midnight placement typically strongest around June. From 52 degrees north its theoretical meridian altitude is about 18.9 degrees; local horizons and the live altitude chart determine the practical window.
A small telescope under reasonably dark skies is a good starting point; use the live altitude chart to choose its highest point.
What to expect
The SIMBAD classification for the matched source is OpC. A published radial velocity value is 3.3 km/s. The SIMBAD record currently connects it to 242 bibliographic references.
Its roughly 31.3 arcminute span suits a medium field of view. Use the listed 31.3 by 31.3 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.
