Star • GDR1 5209118305765620096

Cluster
eta Cha
Proposed Clusters
Alternate Names
eta Cha 12
[GRS2008] 12
WISEA J084756.64-785452.8
EQ Cha
GDR1 5209118305765620096
GDR2 5209118305765620096
RECX 12
2MASS 08475676-7854532
2MASS J08475676-7854532
[MHL2005] 12
V* EQ Cha
GSC 9403-0389
SIP Output
Aladin
08 47 56.600 -78 54 52.79
FoV: 3'
+–
×
×
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Fiducial Data

Parameter
Value
Error
Unit
Reference
bin_sep
0.04
 
arcsec
bouwman2006
cluster_name
eta Cha
 
[char]
messina2011
ra
08 47 56.6001
 
h m s
gaiacollaboration2016
dec
-78 54 52.7924
 
d m s
gaiacollaboration2016
ra_deg
131.98583384
 
deg
gaiacollaboration2016
dec_deg
-78.91466456
 
deg
gaiacollaboration2016
pm_ra
-30.138
0.121
mas/yr
gaiacollaboration2018
pm_dec
26.514
0.117
mas/yr
gaiacollaboration2018
rv
23.3
0.9
km/s
riviere-marichalar2015
plx
10.4522
0.066
mas
gaiacollaboration2018
st_dist
95.6736
0.6041
pc
gaiacollaboration2018
spt
M3
 
[char]
messina2011
spt_num
63.0
 
[decimal allowed]
messina2011
spt_lit
M3e
 
[char]
messina2011
H_alpha
-6.02
 
0.1nm
riviere-marichalar2015
H_alpha_tenp
215.0
 
km/s
riviere-marichalar2015
LiI_6708
0.609
0.023
0.1nm
mentuch2008
vsini
15.1
 
km/s
jayawardhana2006
rot_period
1.26
0.05
days
messina2011
Av
0.181
0.36
mag
YSOPY

Non Fiducial Data

Membership
cluster_name ([char])
Value Error Ref.
unknown gaiacollaboration2016
eta Cha mentuch2008
eta Cha jayawardhana2006
mem_num ([integer])
Value Error Ref.
0 gaiacollaboration2016
Motion
pm_ra (mas/yr)
Value Error Ref.
-19.0 lawson2001
pm_dec (mas/yr)
Value Error Ref.
30.0 lawson2001
rv (km/s)
Value Error Ref.
18.0 2.0 covino1997
ObsProp
spt ([char])
Value Error Ref.
M3.25 luhman2004
M2 covino1997
M3 skiffBMK
M2 mamajek1999
M3 lawson2001
spt_num ([decimal allowed])
Value Error Ref.
63.25 luhman2004
62.0 covino1997
63.0 skiffBMK
62.0 mamajek1999
63.0 lawson2001
spt_lit ([char])
Value Error Ref.
M3.25 luhman2004
M2 covino1997
M3Ve skiffBMK
M2 mamajek1999
M3 lawson2001
H_alpha (0.1nm)
Value Error Ref.
-5.7 0.54 jayawardhana2006
-4.2 lawson2004
-5.57 covino1997
-5.7 mamajek1999
H_alpha_tenp (km/s)
Value Error Ref.
154.0 9.0 jayawardhana2006
160.0 lawson2004
LiI_6708 (0.1nm)
Value Error Ref.
0.64 0.015 covino1997
0.6 mamajek1999
vsini (km/s)
Value Error Ref.
13.0 3.0 covino1997
rot_period (days)
Value Error Ref.
1.24 lawson2002
8.55 lawson2001
Derived Stellar Properties
Teff (K)
Value Error Ref.
3300.0 riviere-marichalar2015
3440.0 11.0 mentuch2008
3379.0 luhman2004
3516.0 lawson2001
3367.25 227.395 gaiacollaboration2018
log_Teff (log K)
Value Error Ref.
3.52 riviere-marichalar2015
3.54 0.01 mentuch2008
3.53 luhman2004
3.55 lawson2001
L_star (Lsun)
Value Error Ref.
0.24 0.13 riviere-marichalar2015
0.25 luhman2004
0.24 lawson2001
0.272 0.0025 gaiacollaboration2018
log_L_star (log Lsun)
Value Error Ref.
-0.6198 0.3357 riviere-marichalar2015
-0.6021 luhman2004
-0.6198 lawson2001
R_star (Rsun)
Value Error Ref.
1.33 lawson2001
1.53 0.18 gaiacollaboration2018
M_star (Msun)
Value Error Ref.
0.4 mamajek1999
0.33 lawson2001
log_M_star (log Msun)
Value Error Ref.
-0.398 mamajek1999
-0.4815 lawson2001
age_star (Myr)
Value Error Ref.
2.0 mamajek1999
4.0 lawson2001
log_age_star (log yr)
Value Error Ref.
6.3 mamajek1999
6.6 lawson2001
X-ray
xray_flag ([boolean])
Value Error Ref.
True mamajek1999
Lx (erg/s)
Value Error Ref.
1.2589254117899999e+30 mamajek1999
log_Lx (log erg/s)
Value Error Ref.
30.1 mamajek1999
Optical Photometry
V (mag)
Value Error Ref.
13.314 0.093 henden2016
gaia_g (mag)
Value Error Ref.
11.86 gaiacollaboration2016
Mid-Infrared Photometry
L (mag)
Value Error Ref.
8.02 lyo2003
S_3p6 (mag)
Value Error Ref.
8.19 0.01 megeath2005
S_4p5 (mag)
Value Error Ref.
8.15 0.01 megeath2005
S_5p8 (mag)
Value Error Ref.
8.1 0.02 megeath2005
S_8 (mag)
Value Error Ref.
8.07 0.01 megeath2005
Coordinates
ra (h m s)
Value Error Ref.
08 47 56.600 gaiacollaboration2016
08 47 56.766 cutri2003
08 47 56.650 wright2010
08 47 56.766 riviere-marichalar2015
08 47 56.766 messina2011
08 47 56.766 lopez-santiago2010
08 47 56.766 sicilia-aguilar2009
08 47 56.766 gautier2008
08 47 56.766 mentuch2008
08 47 56.766 bouwman2006
08 47 56.766 jayawardhana2006
08 47 56.766 haisch2005
08 47 56.766 megeath2005
08 47 56.77 luhman2004
08 47 56.766 lawson2004
08 47 56.766 lyo2003
08 47 56.766 lawson2002
08 47 56.766 covino1997
08 47 56.770 skiffBMK
08 47 56.636 henden2016
08 47 56.9 mamajek1999
08 47 56.766 lawson2001
08 47 56.595 gaiacollaboration2018
dec (d m s)
Value Error Ref.
-78 54 52.79 gaiacollaboration2016
-78 54 53.21 cutri2003
-78 54 52.90 wright2010
-78 54 53.19 riviere-marichalar2015
-78 54 53.19 messina2011
-78 54 53.19 lopez-santiago2010
-78 54 53.19 sicilia-aguilar2009
-78 54 53.19 gautier2008
-78 54 53.19 mentuch2008
-78 54 53.19 bouwman2006
-78 54 53.19 jayawardhana2006
-78 54 53.19 haisch2005
-78 54 53.19 megeath2005
-78 54 53.2 luhman2004
-78 54 53.19 lawson2004
-78 54 53.19 lyo2003
-78 54 53.19 lawson2002
-78 54 53.19 covino1997
-78 54 53.21 skiffBMK
-78 54 52.96 henden2016
-78 54 53.9 mamajek1999
-78 54 53.19 lawson2001
-78 54 52.78 gaiacollaboration2018
ra_deg (deg)
Value Error Ref.
131.98583384 0.432 gaiacollaboration2016
131.986523 60.0 cutri2003
131.9860406 45.155 wright2010
131.986525 riviere-marichalar2015
131.986525 messina2011
131.986525 lopez-santiago2010
131.986525 sicilia-aguilar2009
131.986525 gautier2008
131.986525 mentuch2008
131.986525 bouwman2006
131.986525 jayawardhana2006
131.986525 haisch2005
131.986525 megeath2005
131.98654167 luhman2004
131.986525 lawson2004
131.986525 lyo2003
131.986525 lawson2002
131.986525 covino1997
131.98654 skiffBMK
131.985984 284.0 henden2016
131.98708333 mamajek1999
131.986525 lawson2001
131.9858132 0.0635 gaiacollaboration2018
dec_deg (deg)
Value Error Ref.
-78.91466456 0.417 gaiacollaboration2016
-78.91478 120.0 cutri2003
-78.9146944 44.6224 wright2010
-78.914775 riviere-marichalar2015
-78.914775 messina2011
-78.914775 lopez-santiago2010
-78.914775 sicilia-aguilar2009
-78.914775 gautier2008
-78.914775 mentuch2008
-78.914775 bouwman2006
-78.914775 jayawardhana2006
-78.914775 haisch2005
-78.914775 megeath2005
-78.91477778 luhman2004
-78.914775 lawson2004
-78.914775 lyo2003
-78.914775 lawson2002
-78.914775 covino1997
-78.91478 skiffBMK
-78.91471 143.0 henden2016
-78.91497222 mamajek1999
-78.914775 lawson2001
-78.91466079 0.062 gaiacollaboration2018

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