NGC 2682

Before E(B-V)

NGC 2682 is much older than IC 2948 and NGC 3766.

After E(B-V)

The extinction value was found to be 0.3

The distance was found to be 5.45 kpc.

The age was found to be 10 log(yrs).

The metallicity was found to be -2.2.

True Values

[1]Distance: 2700 light-years -->  0.8 kpc

[2]Age: 4 billion years old --> Log(4E9) = Log(4) + 9 ~ 9.6

[2]Metallicity:  0.00 ± 0.03 

[3]E(B-V): 0.04

Citations:

[1] https://www.messier-objects.com/messier-67-king-cobra-cluster/ 

[2] https://doi.org/10.48550/arXiv.1004.3308 

[3] https://itu.physics.uiowa.edu/labs/advanced/photometry-globular-cluster/part-2-finding-temperature-and-spectral-type