Star • GDR1 5209025366966870400

Cluster
eta Cha
Proposed Clusters
Alternate Names
HPPSC100A_J084416.6-785907
WISEA J084416.30-785907.7
2MASS 08441637-7859080
V* EN Cha
[MHL2005] 9
[GRS2008] 09
GDR2 5209025366968905856
eta Cha 9
USNO-A2.0 entry?b
GDR1 5209025366966870400
RECX 9
RECX 9a
2MASS J08441637-7859080
EN Cha
SIP Output
Aladin
08 44 16.247 -78 59 7.67
FoV: 3'
+–
×
×
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Fiducial Data

Parameter
Value
Error
Unit
Reference
bin_sep
0.2
 
arcsec
bouwman2006
cluster_name
eta Cha
 
[char]
messina2011
ra
08 44 16.2474
 
h m s
gaiacollaboration2016
dec
-78 59 07.6691
 
d m s
gaiacollaboration2016
ra_deg
131.06769766
 
deg
gaiacollaboration2016
dec_deg
-78.98546364
 
deg
gaiacollaboration2016
pm_ra
-33.0
 
mas/yr
lawson2001
pm_dec
27.0
 
mas/yr
lawson2001
rv
18.5
0.7
km/s
riviere-marichalar2015
spt
M4
 
[char]
messina2011
spt_num
64.0
 
[decimal allowed]
messina2011
spt_lit
M4
 
[char]
messina2011
H_alpha
-10.4
 
0.1nm
riviere-marichalar2015
H_alpha_tenp
380.0
 
km/s
riviere-marichalar2015
LiI_6708
0.566
0.027
0.1nm
mentuch2008
vsini
20.8
 
km/s
jayawardhana2006
rot_period
1.71
 
days
lawson2001
Av
0.252
0.51
mag
YSOPY
Teff
3160.0
113.7
K
YSOPY
log_Teff
3.5
0.02
log K
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
ObsProp
spt ([char])
Value Error Ref.
M4.5 luhman2004
M4.5 skiffBMK
M4 lawson2001
M4 mamajek1999
spt_num ([decimal allowed])
Value Error Ref.
64.5 luhman2004
64.5 skiffBMK
64.0 lawson2001
64.0 mamajek1999
spt_lit ([char])
Value Error Ref.
M4.5 luhman2004
M4.5Ve skiffBMK
M4 lawson2001
M4 mamajek1999
H_alpha (0.1nm)
Value Error Ref.
-11.7 2.71 jayawardhana2006
-10.0 lawson2004
-19.7 mamajek1999
H_alpha_tenp (km/s)
Value Error Ref.
389.0 54.0 jayawardhana2006
300.0 lawson2004
LiI_6708 (0.1nm)
Value Error Ref.
0.5 mamajek1999
Derived Stellar Properties
Teff (K)
Value Error Ref.
3300.0 riviere-marichalar2015
3127.0 11.0 mentuch2008
3198.0 luhman2004
3373.0 lawson2001
3933.15 525.525 gaiacollaboration2018
log_Teff (log K)
Value Error Ref.
3.52 riviere-marichalar2015
3.5 0.01 mentuch2008
3.5 luhman2004
3.53 lawson2001
L_star (Lsun)
Value Error Ref.
0.09 0.05 riviere-marichalar2015
0.096 luhman2004
0.071 lawson2001
log_L_star (log Lsun)
Value Error Ref.
-1.0458 0.581 riviere-marichalar2015
-1.01773 luhman2004
-1.14874 lawson2001
R_star (Rsun)
Value Error Ref.
0.8 lawson2001
M_star (Msun)
Value Error Ref.
0.27 lawson2001
0.2 mamajek1999
log_M_star (log Msun)
Value Error Ref.
-0.5686 lawson2001
-0.699 mamajek1999
age_star (Myr)
Value Error Ref.
9.0 lawson2001
2.0 mamajek1999
log_age_star (log yr)
Value Error Ref.
6.95 lawson2001
6.3 mamajek1999
X-ray
xray_flag ([boolean])
Value Error Ref.
True mamajek1999
Lx (erg/s)
Value Error Ref.
2.51188643151e+28 mamajek1999
log_Lx (log erg/s)
Value Error Ref.
28.4 mamajek1999
Optical Photometry
V (mag)
Value Error Ref.
14.967 0.08 henden2016
gaia_g (mag)
Value Error Ref.
13.24 gaiacollaboration2016
Mid-Infrared Photometry
L (mag)
Value Error Ref.
8.82 lyo2003
S_3p6 (mag)
Value Error Ref.
8.99 0.02 megeath2005
S_4p5 (mag)
Value Error Ref.
8.8 0.01 megeath2005
S_5p8 (mag)
Value Error Ref.
8.57 0.01 megeath2005
S_8 (mag)
Value Error Ref.
7.97 0.02 megeath2005
Coordinates
ra (h m s)
Value Error Ref.
08 44 16.247 gaiacollaboration2016
08 44 16.378 cutri2003
08 44 16.305 wright2010
08 44 16.414 riviere-marichalar2015
08 44 16.414 messina2011
08 44 16.414 lopez-santiago2010
08 44 16.414 sicilia-aguilar2009
08 44 16.414 gautier2008
08 44 16.414 mentuch2008
08 44 16.414 bouwman2006
08 44 16.414 jayawardhana2006
08 44 16.414 haisch2005
08 44 16.38 luhman2004
08 44 16.414 megeath2005
08 44 16.414 lyo2003
08 44 16.414 lawson2004
08 44 16.409 skiffBMK
08 44 16.414 lawson2001
08 44 16.615 marton2017
08 44 16.217 henden2016
08 44 16.6 mamajek1999
08 44 16.241 gaiacollaboration2018
dec (d m s)
Value Error Ref.
-78 59 07.67 gaiacollaboration2016
-78 59 08.09 cutri2003
-78 59 07.74 wright2010
-78 59 08.04 riviere-marichalar2015
-78 59 08.04 messina2011
-78 59 08.04 lopez-santiago2010
-78 59 08.04 sicilia-aguilar2009
-78 59 08.04 gautier2008
-78 59 08.04 mentuch2008
-78 59 08.04 bouwman2006
-78 59 08.04 jayawardhana2006
-78 59 08.04 haisch2005
-78 59 08.1 luhman2004
-78 59 08.04 megeath2005
-78 59 08.04 lyo2003
-78 59 08.04 lawson2004
-78 59 08.02 skiffBMK
-78 59 08.04 lawson2001
-78 59 07.43 marton2017
-78 59 07.28 henden2016
-78 59 08.9 mamajek1999
-78 59 07.64 gaiacollaboration2018
ra_deg (deg)
Value Error Ref.
131.06769766 1.892 gaiacollaboration2016
131.068241 60.0 cutri2003
131.0679367 41.8147 wright2010
131.06839167 riviere-marichalar2015
131.06839167 messina2011
131.06839167 lopez-santiago2010
131.06839167 sicilia-aguilar2009
131.06839167 gautier2008
131.06839167 mentuch2008
131.06839167 bouwman2006
131.06839167 jayawardhana2006
131.06839167 haisch2005
131.06825 luhman2004
131.06839167 megeath2005
131.06839167 lyo2003
131.06839167 lawson2004
131.06837 skiffBMK
131.06839167 lawson2001
131.069228 766.8 marton2017
131.067569 394.0 henden2016
131.06916667 mamajek1999
131.0676721 1.2824 gaiacollaboration2018
dec_deg (deg)
Value Error Ref.
-78.98546363 2.956 gaiacollaboration2016
-78.98558 90.0 cutri2003
-78.9854839 41.2565 wright2010
-78.98556667 riviere-marichalar2015
-78.98556667 messina2011
-78.98556667 lopez-santiago2010
-78.98556667 sicilia-aguilar2009
-78.98556667 gautier2008
-78.98556667 mentuch2008
-78.98556667 bouwman2006
-78.98556667 jayawardhana2006
-78.98556667 haisch2005
-78.98558333 luhman2004
-78.98556667 megeath2005
-78.98556667 lyo2003
-78.98556667 lawson2004
-78.98556 skiffBMK
-78.98556667 lawson2001
-78.985397 147.6 marton2017
-78.985355 640.0 henden2016
-78.98580556 mamajek1999
-78.98545579 1.9853 gaiacollaboration2018

All young stellar objects welcome!

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