Star • GDR1 5209135348195447296

Cluster
eta Cha
Proposed Clusters
Alternate Names
GDR1 5209135348195447296
[GRS2008] 10
eta Cha 10
EO Cha
WISEA J084431.78-784630.8
2MASS 08443188-7846311
#RECX 10
GSC 9403-1279
V* EO Cha
RECX 10
GDR2 5209135352491538432
2MASS J08443188-7846311
SIP Output
Aladin
08 44 31.738 -78 46 30.74
FoV: 3'
+–
×
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Fiducial Data

Parameter
Value
Error
Unit
Reference
cluster_name
eta Cha
 
[char]
messina2011
ra
08 44 31.7382
 
h m s
gaiacollaboration2016
dec
-78 46 30.7399
 
d m s
gaiacollaboration2016
ra_deg
131.13224239
 
deg
gaiacollaboration2016
dec_deg
-78.77520552
 
deg
gaiacollaboration2016
pm_ra
-30.301
0.057
mas/yr
gaiacollaboration2018
pm_dec
26.858
0.049
mas/yr
gaiacollaboration2018
rv
17.5
0.2
km/s
riviere-marichalar2015
plx
10.1857
0.0313
mas
gaiacollaboration2018
st_dist
98.1769
0.3017
pc
gaiacollaboration2018
spt
K7
 
[char]
messina2011
spt_num
57.0
 
[decimal allowed]
messina2011
spt_lit
K7
 
[char]
messina2011
H_alpha
-2.9
 
0.1nm
riviere-marichalar2015
H_alpha_tenp
207.0
 
km/s
riviere-marichalar2015
LiI_6708
0.534
0.021
0.1nm
mentuch2008
vsini
9.0
5.0
km/s
covino1997
rot_period
20.0
3.0
days
messina2011
Av
0.317
0.3
mag
YSOPY
Teff
3970.0
62.0
K
YSOPY

Non Fiducial Data

Membership
cluster_name ([char])
Value Error Ref.
unknown gaiacollaboration2016
eta Cha jayawardhana2006
eta Cha scholz2007
eta Cha mentuch2008
eta Cha tanner2007
mem_num ([integer])
Value Error Ref.
0 gaiacollaboration2016
mem_lit_name ([char])
Value Error Ref.
eta Cha tanner2007
Motion
pm_ra (mas/yr)
Value Error Ref.
-48.0 lawson2001
pm_dec (mas/yr)
Value Error Ref.
20.0 lawson2001
rv (km/s)
Value Error Ref.
15.0 2.0 covino1997
ObsProp
spt ([char])
Value Error Ref.
M1 luhman2004
K9 skiffBMK
K7 covino1997
M0 lawson2001
K7 mamajek1999
spt_num ([decimal allowed])
Value Error Ref.
61.0 luhman2004
59.0 skiffBMK
57.0 covino1997
60.0 lawson2001
57.0 mamajek1999
spt_lit ([char])
Value Error Ref.
M1 luhman2004
K9IV-Ve skiffBMK
K7 covino1997
M0 lawson2001
K7 mamajek1999
H_alpha (0.1nm)
Value Error Ref.
-1.2 0.36 jayawardhana2006
-1.15 0.28 scholz2007
-1.0 lawson2004
-1.1 covino1997
-1.0 mamajek1999
H_alpha_tenp (km/s)
Value Error Ref.
103.0 14.0 jayawardhana2006
110.0 lawson2004
LiI_6708 (0.1nm)
Value Error Ref.
0.52 0.015 covino1997
0.5 mamajek1999
rot_period (days)
Value Error Ref.
20.0 lawson2001
Derived Stellar Properties
Teff (K)
Value Error Ref.
3800.0 riviere-marichalar2015
3992.0 11.0 mentuch2008
3705.0 luhman2004
3873.0 lawson2001
4088.69 180.145 gaiacollaboration2018
log_Teff (log K)
Value Error Ref.
3.58 riviere-marichalar2015
3.6 0.01 mentuch2008
3.57 luhman2004
3.59 lawson2001
L_star (Lsun)
Value Error Ref.
0.22 0.12 riviere-marichalar2015
0.23 luhman2004
0.219 lawson2001
0.213 0.0015 gaiacollaboration2018
log_L_star (log Lsun)
Value Error Ref.
-0.6576 0.3587 riviere-marichalar2015
-0.6383 luhman2004
-0.65956 lawson2001
R_star (Rsun)
Value Error Ref.
1.04 lawson2001
0.92 0.075 gaiacollaboration2018
M_star (Msun)
Value Error Ref.
0.55 lawson2001
0.8 mamajek1999
log_M_star (log Msun)
Value Error Ref.
-0.2596 lawson2001
-0.097 mamajek1999
age_star (Myr)
Value Error Ref.
7.0 lawson2001
13.0 mamajek1999
log_age_star (log yr)
Value Error Ref.
6.85 lawson2001
7.11 mamajek1999
X-ray
xray_flag ([boolean])
Value Error Ref.
True mamajek1999
Lx (erg/s)
Value Error Ref.
6.3095734448e+29 mamajek1999
log_Lx (log erg/s)
Value Error Ref.
29.8 mamajek1999
Optical Photometry
V (mag)
Value Error Ref.
12.555 0.04 henden2016
gaia_g (mag)
Value Error Ref.
11.647 gaiacollaboration2016
Mid-Infrared Photometry
L (mag)
Value Error Ref.
8.48 lyo2003
Coordinates
ra (h m s)
Value Error Ref.
08 44 31.738 gaiacollaboration2016
08 44 31.884 cutri2003
08 44 31.789 wright2010
08 44 31.898 riviere-marichalar2015
08 44 31.898 messina2011
08 44 31.898 lopez-santiago2010
08 44 31.898 jayawardhana2006
08 44 31.898 sicilia-aguilar2009
08 44 31.898 gautier2008
08 44 31.898 scholz2007
08 44 31.898 mentuch2008
08 44 31.898 tanner2007
08 44 31.898 bouwman2006
08 44 31.898 haisch2005
08 44 31.88 luhman2004
08 44 31.898 lawson2004
08 44 31.898 lyo2003
08 44 31.901 skiffBMK
08 44 31.898 covino1997
08 44 31.783 henden2016
08 44 31.898 lawson2001
08 44 32.2 mamajek1999
08 44 31.733 gaiacollaboration2018
dec (d m s)
Value Error Ref.
-78 46 30.74 gaiacollaboration2016
-78 46 31.19 cutri2003
-78 46 30.85 wright2010
-78 46 31.15 riviere-marichalar2015
-78 46 31.15 messina2011
-78 46 31.15 lopez-santiago2010
-78 46 31.15 jayawardhana2006
-78 46 31.15 sicilia-aguilar2009
-78 46 31.15 gautier2008
-78 46 31.15 scholz2007
-78 46 31.15 mentuch2008
-78 46 31.15 tanner2007
-78 46 31.15 bouwman2006
-78 46 31.15 haisch2005
-78 46 31.2 luhman2004
-78 46 31.15 lawson2004
-78 46 31.15 lyo2003
-78 46 31.19 skiffBMK
-78 46 31.15 covino1997
-78 46 30.84 henden2016
-78 46 31.15 lawson2001
-78 46 31.7 mamajek1999
-78 46 30.73 gaiacollaboration2018
ra_deg (deg)
Value Error Ref.
131.1322424 0.168 gaiacollaboration2016
131.132848 60.0 cutri2003
131.1324548 45.1597 wright2010
131.13290833 riviere-marichalar2015
131.13290833 messina2011
131.13290833 lopez-santiago2010
131.13290833 jayawardhana2006
131.13290833 sicilia-aguilar2009
131.13290833 gautier2008
131.13290833 scholz2007
131.13290833 mentuch2008
131.13290833 tanner2007
131.13290833 bouwman2006
131.13290833 haisch2005
131.13283333 luhman2004
131.13290833 lawson2004
131.13290833 lyo2003
131.13292 skiffBMK
131.13290833 covino1997
131.132429 232.0 henden2016
131.13290833 lawson2001
131.13416667 mamajek1999
131.13222086 0.0269 gaiacollaboration2018
dec_deg (deg)
Value Error Ref.
-78.77520552 0.169 gaiacollaboration2016
-78.77533 100.0 cutri2003
-78.7752351 44.5006 wright2010
-78.77531944 riviere-marichalar2015
-78.77531944 messina2011
-78.77531944 lopez-santiago2010
-78.77531944 jayawardhana2006
-78.77531944 sicilia-aguilar2009
-78.77531944 gautier2008
-78.77531944 scholz2007
-78.77531944 mentuch2008
-78.77531944 tanner2007
-78.77531944 bouwman2006
-78.77531944 haisch2005
-78.77533333 luhman2004
-78.77531944 lawson2004
-78.77531944 lyo2003
-78.77533 skiffBMK
-78.77531944 covino1997
-78.775234 107.0 henden2016
-78.77531944 lawson2001
-78.77547222 mamajek1999
-78.77520169 0.0283 gaiacollaboration2018

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