Star • GDR1 5209024572399411200

Cluster
eta Cha
Proposed Clusters
Alternate Names
[MHL2005] 7
V* EM Cha
GDR1 5209024572399411200
2MASS J08430723-7904524
[GRS2008] 07
2MASS 08430723-7904524
WISEA J084307.13-790452.1
Anonymous?b
GDR2 5209024576694905472
RECX 7a
EM Cha
RECX 7
[MHL2005] 10
eta Cha 7
SIP Output
Aladin

Fiducial Data

Parameter Value Error Unit Reference
bin_sep 0.001 arcsec bouwman2006
cluster_name eta Cha [char] messina2011
ra 08 43 07.085 h m s gaiacollaboration2016
dec -79 04 52.0703 d m s gaiacollaboration2016
ra_deg 130.7795209 deg gaiacollaboration2016
dec_deg -79.08113065 deg gaiacollaboration2016
pm_ra -30.185 0.041 mas/yr gaiacollaboration2018
pm_dec 27.454 0.044 mas/yr gaiacollaboration2018
rv 43.9 22.6 km/s riviere-marichalar2015
plx 10.1278 0.0238 mas gaiacollaboration2018
st_dist 98.7381 0.232 pc gaiacollaboration2018
spt M3 [char] messina2011
spt_num 63.0 [decimal allowed] messina2011
spt_lit M3 [char] messina2011
H_alpha -1.66 0.1nm riviere-marichalar2015
H_alpha_tenp 193.0 km/s riviere-marichalar2015
LiI_6708 0.415 0.022 0.1nm mentuch2008
vsini 29.1 km/s jayawardhana2006
rot_period 2.62 days lawson2001
Av 0.0 0.34 mag YSOPY
Teff 3360.0 91.4 K YSOPY
log_Teff 3.526 0.01 log K YSOPY
L_star 2.317 0.01 Lsun YSOPY
log_L_star 0.365 0.01 log Lsun YSOPY
R_star 0.009 Rsun YSOPY
M_star 0.287 0.01 Msun YSOPY
log_M_star -0.542 0.02 log Msun YSOPY
age_star 0.013 0.0 Myr YSOPY
log_age_star 4.125 0.13 log yr YSOPY
log_g 3.81 0.05 log cm/s2 mentuch2008
log_nLi 2.77 0.08 dex mentuch2008
disk_flag True [boolean] bouwman2006
disk_desc None [char] bouwman2006
acc_flag True [boolean] riviere-marichalar2015
Mdot 0.0 Msun/yr riviere-marichalar2015
log_Mdot -11.01 log Msun/yr riviere-marichalar2015
xray_flag True [boolean] lopez-santiago2010
Lx 1.2589254117899999e+30 erg/s lopez-santiago2010
log_Lx 30.1 log erg/s lopez-santiago2010
B 12.019 0.049 mag henden2016
V 10.84 mag lawson2001
Rc 10.17 mag lawson2001
Ic 9.44 mag lawson2001
g_sloan 11.531 0.081 mag henden2016
r_sloan 10.406 0.071 mag henden2016
i_sloan 10.39 mag henden2016
gaia_g 10.3776 0.0021 mag gaiacollaboration2018
gaia_bp 11.1288 0.0079 mag gaiacollaboration2018
gaia_rp 9.5548 0.0056 mag gaiacollaboration2018
tm_J 8.42 0.024 mag cutri2003
tm_H 7.758 0.034 mag cutri2003
tm_K 7.635 0.033 mag cutri2003
tm_flags "AAA,0" [char] cutri2003
J 8.61 mag lyo2003
H 7.92 mag lyo2003
K 7.69 mag lyo2003
L 7.45 mag haisch2005
S_3p6 7.52 0.01 mag sicilia-aguilar2009
S_4p5 7.54 0.02 mag sicilia-aguilar2009
S_5p8 7.49 0.01 mag sicilia-aguilar2009
S_8 7.46 0.01 mag sicilia-aguilar2009
S_24_fd 7.2 0.04 mJy gautier2008
S_24 7.37 0.08 mag sicilia-aguilar2009
S_13 27.2 mJy bouwman2006
S_33 6.9 mJy bouwman2006
W_3p4 7.525 0.027 mag wright2010
W_4p6 7.527 0.019 mag wright2010
W_12 7.424 0.017 mag wright2010
W_22 7.536 0.098 mag wright2010
wise_flags "AAAA,hhd0" [char] wright2010

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
rv (km/s)
Value Error Ref.
4.3 2.0 covino1997
ObsProp
spt ([char])
Value Error Ref.
K6 luhman2004
K5 lawson2001
K5 skiffBMK
K4 covino1997
K3 mamajek1999
spt_num ([decimal allowed])
Value Error Ref.
56.0 luhman2004
55.0 lawson2001
55.0 skiffBMK
54.0 covino1997
53.0 mamajek1999
spt_lit ([char])
Value Error Ref.
K6 luhman2004
K5 lawson2001
K5IV(e) skiffBMK
K4 covino1997
K3 mamajek1999
H_alpha (0.1nm)
Value Error Ref.
-1.0 0.36 jayawardhana2006
-0.4 lawson2004
-0.6 covino1997
-1.0 mamajek1999
H_alpha_tenp (km/s)
Value Error Ref.
291.0 70.0 jayawardhana2006
120.0 lawson2004
LiI_6708 (0.1nm)
Value Error Ref.
0.46 0.015 covino1997
0.4 mamajek1999
vsini (km/s)
Value Error Ref.
30.0 3.0 covino1997
Derived Stellar Properties
Teff (K)
Value Error Ref.
4100.0 riviere-marichalar2015
4002.0 25.0 mentuch2008
4205.0 luhman2004
4355.0 lawson2001
4325.49 137.795 gaiacollaboration2018
log_Teff (log K)
Value Error Ref.
3.61 riviere-marichalar2015
3.6 0.02 mentuch2008
3.62 luhman2004
3.64 lawson2001
L_star (Lsun)
Value Error Ref.
0.7 0.38 riviere-marichalar2015
0.79 luhman2004
0.724 lawson2001
0.711 0.003 gaiacollaboration2018
log_L_star (log Lsun)
Value Error Ref.
-0.155 0.0841 riviere-marichalar2015
-0.1024 luhman2004
-0.14026 lawson2001
R_star (Rsun)
Value Error Ref.
1.5 lawson2001
1.5 0.09 gaiacollaboration2018
M_star (Msun)
Value Error Ref.
0.7 lawson2001
1.1 mamajek1999
log_M_star (log Msun)
Value Error Ref.
-0.155 lawson2001
0.041 mamajek1999
age_star (Myr)
Value Error Ref.
2.0 lawson2001
0.33 mamajek1999
log_age_star (log yr)
Value Error Ref.
6.3 lawson2001
5.5185 mamajek1999
X-ray
xray_flag ([boolean])
Value Error Ref.
True mamajek1999
Lx (erg/s)
Value Error Ref.
1.99526231497e+30 mamajek1999
log_Lx (log erg/s)
Value Error Ref.
30.3 mamajek1999
Optical Photometry
V (mag)
Value Error Ref.
10.865 0.049 henden2016
gaia_g (mag)
Value Error Ref.
10.263 gaiacollaboration2016
Mid-Infrared Photometry
L (mag)
Value Error Ref.
7.48 lyo2003
S_3p6 (mag)
Value Error Ref.
8.58 0.01 megeath2005
S_4p5 (mag)
Value Error Ref.
8.61 0.01 megeath2005
S_5p8 (mag)
Value Error Ref.
8.55 0.02 megeath2005
S_8 (mag)
Value Error Ref.
8.49 0.01 megeath2005
Coordinates
ra (h m s)
Value Error Ref.
08 43 07.085 gaiacollaboration2016
08 43 07.238 cutri2003
08 43 07.131 wright2010
08 43 07.239 riviere-marichalar2015
08 43 07.239 lopez-santiago2010
08 43 07.239 messina2011
08 43 07.239 sicilia-aguilar2009
08 43 07.239 gautier2008
08 43 07.239 mentuch2008
08 43 07.239 bouwman2006
08 43 07.239 jayawardhana2006
08 43 07.239 haisch2005
08 43 07.239 megeath2005
08 43 07.24 luhman2004
08 43 07.239 lawson2004
08 43 07.239 lyo2003
08 43 07.239 lawson2001
08 43 07.241 skiffBMK
08 43 07.239 covino1997
08 43 07.060 henden2016
08 43 07.7 mamajek1999
08 43 07.080 gaiacollaboration2018
dec (d m s)
Value Error Ref.
-79 04 52.07 gaiacollaboration2016
-79 04 52.48 cutri2003
-79 04 52.20 wright2010
-79 04 52.49 riviere-marichalar2015
-79 04 52.49 lopez-santiago2010
-79 04 52.49 messina2011
-79 04 52.49 sicilia-aguilar2009
-79 04 52.49 gautier2008
-79 04 52.49 mentuch2008
-79 04 52.49 bouwman2006
-79 04 52.49 jayawardhana2006
-79 04 52.49 haisch2005
-79 04 52.49 megeath2005
-79 04 52.5 luhman2004
-79 04 52.49 lawson2004
-79 04 52.49 lyo2003
-79 04 52.49 lawson2001
-79 04 52.50 skiffBMK
-79 04 52.49 covino1997
-79 04 51.52 henden2016
-79 04 52.3 mamajek1999
-79 04 52.06 gaiacollaboration2018
ra_deg (deg)
Value Error Ref.
130.7795209 0.068 gaiacollaboration2016
130.780159 60.0 cutri2003
130.7797133 43.2301 wright2010
130.7801625 riviere-marichalar2015
130.7801625 lopez-santiago2010
130.7801625 messina2011
130.7801625 sicilia-aguilar2009
130.7801625 gautier2008
130.7801625 mentuch2008
130.7801625 bouwman2006
130.7801625 jayawardhana2006
130.7801625 haisch2005
130.7801625 megeath2005
130.78016667 luhman2004
130.7801625 lawson2004
130.7801625 lyo2003
130.7801625 lawson2001
130.78017 skiffBMK
130.7801625 covino1997
130.779417 332.0 henden2016
130.78208333 mamajek1999
130.7794988 0.0213 gaiacollaboration2018
dec_deg (deg)
Value Error Ref.
-79.08113065 0.097 gaiacollaboration2016
-79.081245 130.0 cutri2003
-79.081166 42.4561 wright2010
-79.08124722 riviere-marichalar2015
-79.08124722 lopez-santiago2010
-79.08124722 messina2011
-79.08124722 sicilia-aguilar2009
-79.08124722 gautier2008
-79.08124722 mentuch2008
-79.08124722 bouwman2006
-79.08124722 jayawardhana2006
-79.08124722 haisch2005
-79.08124722 megeath2005
-79.08125 luhman2004
-79.08124722 lawson2004
-79.08124722 lyo2003
-79.08124722 lawson2001
-79.08125 skiffBMK
-79.08124722 covino1997
-79.080978 463.0 henden2016
-79.08119444 mamajek1999
-79.08112685 0.027 gaiacollaboration2018

All young stellar objects welcome!

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