Ruprecht 99

(MWSC 1994; OCL 872; ESO 094 11)

0.33 UTI

0.0

C_N

0.02

C_dens

0.62

C_C3

0.5

C_lit

1.0

C_dup

C3 classification AC

Number of members (P>50%) 18

Radius (P>50% members) 6.3 [arcmin]

C_N 0.0 Sparse
C_dens 0.02 Very loose
C_C3 0.62 Intermediate quality
C_lit 0.5 Moderately studied
C_dup 1.0 Unique

📥 Members 📊 Colab 🔬 Bayestar19 🔍 CDS 🔍 Simbad 🔍 CDS (α, δ) 🔍 Simbad (α, δ)

Overview

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Ruprecht 99 is a sparse, very loose object of intermediate C3 quality. Its parallax locates it at a large^* distance, below the mid-plane, affected by low extinction. It is catalogued as a low-mass, old cluster (see Parameters). It is moderately studied in the literature.

(*): The parallax distance estimate (~6.72 kpc) differs significantly from the median photometric distance (~0.66 kpc).

Close Low extinction Low mass Old

Data

🔍 Search references for Ruprecht 99 in: SciX Simbad

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Reference	Year	RA [deg]	DEC [deg]	Plx [mas]	pmRA [mas/yr]	pmDE [mas/yr]	Rv [km/s]
UCC	–	180.874	-63.874	0.149	-7.057	1.062	-7.403
Just et al.	2023	180.862	-63.857	–	–	–	–
Bica et al.	2019	180.822	-63.868	–	–	–	–
Kharchenko et al.	2016	180.862	-63.857	–	–	–	–
Dias et al.	2014	180.767	-63.85	–	-4.69	0.23	–
Kharchenko et al.	2013	180.87	-63.86	–	-7.74	-2.07	–
Piskunov et al.	2008	180.818	-63.878	–	–	–	–
Kharchenko et al.	2005	180.82	-63.88	–	-7.9	-2.96	–
Dias et al.	2002	180.767	-63.85	–	-4.69	0.23	–

💡 Note: The UCC values are estimated from its identified members.

Reference	Year	Dist [kpc]	Av [mag]	DAv [mag]	Age [Myr]	[Fe/H] [dex]	Mass [Msun]	Bfr	BSS
Just et al.	2023	–	–	–	237	–	29	–	–
Kharchenko et al.	2016	0.72	0.16	–	237	–	–	–	–
Kharchenko et al.	2013	0.72	0.16	–	237	–	–	–	–
Piskunov et al.	2008	0.66	0.16	–	1950	–	–	–	–
Kharchenko et al.	2005	0.66	0.16	–	1950	–	–	–	–
Dias et al.	2002	0.66	0.16	–	1950	–	–	–	–

Visualization

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