Berkeley 2

(OCL 289; FSR 0489; MWSC 41)

UTI: UCC Trust Index C_N C_dens C_C3 C_lit C_dup 0.86 1.0 0.75 0.86 1.0
C3	N_50	r_50
AB	399	1.9

Summary

Berkeley 2 is a rich, very dense object of high C3 quality. It is located at a large distance from the Sun, below the mid-plane. It is well-studied in the literature.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Dias et al. (2002)	6.325	60.4	–	0.88	-2.5	–
Kharchenko et al. (2012)	6.316	60.382	–	1.07	-2.68	–
Cantat-Gaudin et al. (2018)	6.319	60.392	0.117	-1.101	-0.304	–
Bica et al. (2019)	6.311	60.397	–	–	–	–
Soubiran et al. (2018)	6.319	60.392	–	–	–	-76.35
Cantat-Gaudin et al. (2020)	6.319	60.392	0.117	-1.101	-0.304	–
Dias et al. (2021)	6.319	60.394	0.123	-1.091	-0.301	–
Hunt & Reffert (2023)	6.322	60.391	0.147	-1.134	-0.394	-77.716
Cavallo et al. (2024)	6.321	60.394	0.131	–	–	–
Hunt & Reffert (2024)	6.322	60.391	0.147	-1.134	-0.394	-77.716
Almeida et al. (2025)	6.319	60.394	–	–	–	–
Hu & Soubiran (2025)	6.321	60.394	–	–	–	–
UCC	6.317	60.392	0.135	-1.113	-0.369	-77.548

Galactocentric position

How are the galactocentric plots generated?

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Estimated members

1 2 3

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Fundamental parameters

Reference	Values
Dias et al. (2002)	E(B-V)=0.8, Dist=5250.0, Age=8.9
Kharchenko et al. (2012)	e_bv=0.899, distance=5499, log_age=8.98
Cantat-Gaudin et al. (2018)	dmode=6831.4
Soubiran et al. (2018)	dmode=6831.4
Cantat-Gaudin et al. (2020)	AVNN=2.34, DistPc=6928.0, AgeNN=8.77
Dias et al. (2021)	Av=2.555, Dist=6945, logage=8.833, [Fe/H]=-0.16
Hunt & Reffert (2023)	AV50=2.331, diffAV50=1.958, MOD50=13.764, logAge50=8.777
Cavallo et al. (2024)	AV50=2.16, dMod50=13.41, logAge50=9.16, [Fe/H]50=-0.12
Hunt & Reffert (2024)	MassJ=3857.14, MassTot=3971.91
Almeida et al. (2025)	AV=2.555, Dist=6945, logAge=8.833, MassRk=1589.4
Hu & Soubiran (2025)	MA22=-0.31, MA23f=-0.39, MA23g=-0.24, MZ23=-0.7, MK24=-0.32, MF24=-0.38

Search coordinates in Bayestar19

Cluster region map