Ruprecht 45

N_50

r_50

257

5.0

Summary

Ruprecht 45 is a rich, very dense object of very high C3 quality. It is located at a moderate distance from the Sun, well above the mid-plane. It is well-studied in the literature.

This object shares a small percentage of members with a later reported entry.

Search object in SciX | Simbad

Positions

Reference	RA	DEC	Plx	pmRA	pmDE	Rv
Kharchenko et al. (2012)	119.876	-16.305	–	-4.58	0.19	–
Cantat-Gaudin et al. (2018)	119.894	-16.292	0.192	-2.712	2.817	–
Soubiran et al. (2018)	119.894	-16.292	–	–	–	97.5
Cantat-Gaudin et al. (2020)	119.894	-16.292	0.192	-2.712	2.817	–
Dias et al. (2021)	119.892	-16.284	0.195	-2.697	2.831	97.63
Hunt & Reffert (2023)	119.9	-16.291	0.21	-2.669	2.851	98.771
Cavallo et al. (2024)	119.892	-16.295	0.209	–	–	–
Hunt & Reffert (2024)	119.9	-16.291	0.21	-2.669	2.851	98.771
Almeida et al. (2025)	119.892	-16.284	–	–	–	–
Hu & Soubiran (2025)	119.892	-16.295	–	–	–	–

UCC	119.895	-16.293	0.213	-2.682	2.844	97.414

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
Kharchenko et al. (2012)	`e_bv=0.062, distance=1888, log_age=9.3`
Cantat-Gaudin et al. (2018)	`dmode=4518.0`
Soubiran et al. (2018)	`dmode=4518.0`
Cantat-Gaudin et al. (2020)	`AVNN=0.2, DistPc=4043.0, AgeNN=9.5`
Dias et al. (2021)	`Av=0.32, Dist=4228, logage=9.557, [Fe/H]=-0.307`
Hunt & Reffert (2023)	`AV50=0.093, diffAV50=0.961, MOD50=13.025, logAge50=9.312`
Cavallo et al. (2024)	`AV50=0.84, dMod50=12.27, logAge50=9.55, [Fe/H]50=-1.02`
Hunt & Reffert (2024)	`MassJ=961.487, MassTot=1351.27`
Almeida et al. (2025)	`AV=0.32, Dist=4228, logAge=9.557, MassRk=742.4`
Hu & Soubiran (2025)	`MA22=-0.25, MA23f=-0.47, MA23g=-0.42, MZ23=-0.46, MK24=-0.39, MF24=-0.35`

Search coordinates in Bayestar19

Cluster region map

Objects with shared members

Cluster	%	RA	DEC	Plx	pmRA	pmDE	Rv	UTI
OC 0402	21.8	119.89	-16.29	0.22	-2.65	2.85	96.82	0.0