Observer's guide
About NGC 6101
NGC 6101 (C107) is catalogued as a globular cluster in Apus. Its J2000 position is RA 16:25:48, Dec -72:12:07, corresponding to 246.4505 degrees RA and -72.2022 degrees Dec. The local catalogue places it about 49,900 light-years away. Its referenced angular extent is approximately 10.7 by 10.7 arcminutes.
Observing tips
This is rated as a moderate target at magnitude 9.2. It is associated with summer observing, with midnight placement typically strongest around May. From 52 degrees north its theoretical meridian altitude is about 0 degrees; local horizons and the live altitude chart determine the practical window.
Because it is faint, use a larger aperture where possible, avoid bright Moon conditions, and use averted vision.
What to expect
The SIMBAD classification for the matched source is GlC. A published radial velocity value is 366.3 km/s. The SIMBAD record currently connects it to 345 bibliographic references.
At roughly 10.7 arcminutes across, it benefits from a narrower field and adequate image scale. Use the listed 10.7 by 10.7 arcminute extent to check framing, and treat catalogue magnitude as integrated brightness rather than a direct measure of visual contrast.