Graff's Cluster (Open Cluster)

Image of Graff's Cluster
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 24 arcminutes across.
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From Cambridge , Graff's Cluster is visible in the dawn sky, rising at 01:03 (EST) and reaching an altitude of 41° above the south-eastern horizon before fading from view as dawn breaks around 05:05.

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Name Graff's Cluster
Object Type Open Cluster
Other Names
IC 4756
Cr 386
Mel 210
Constellation:Serpens Cauda
Magnitude:4.60 (V) [3]
4.96 (B) [2]
B-V Color (mag):0.36
Right ascension:18h38m [2]
Declination:+05°27' [2]
Distance:484.0 parsec
1577.8 lightyrs [1]
Derived Quantities
Absolute mag (V):-3.82
Visibility from Cambridge

All times shown in Cambridge local time.

01 Jul 2021  –  IC4756 is well placed
02 Jul 2022  –  IC4756 is well placed
02 Jul 2023  –  IC4756 is well placed
01 Jul 2024  –  IC4756 is well placed
01 Jul 2025  –  IC4756 is well placed
01 Jul 2026  –  IC4756 is well placed
02 Jul 2027  –  IC4756 is well placed
01 Jul 2028  –  IC4756 is well placed






Color scheme