YSOC

Fiducial Data

Parameter

Value

Error

Unit

Reference

cluster_name

eta Cha

[char]

messina2011

08 47 01.4861

h m s

gaiacollaboration2016

dec

-78 59 33.9783

d m s

gaiacollaboration2016

ra_deg

131.75619206

deg

gaiacollaboration2016

dec_deg

-78.99277175

deg

gaiacollaboration2016

pm_ra

-30.123

0.047

mas/yr

gaiacollaboration2018

pm_dec

26.685

0.039

mas/yr

gaiacollaboration2018

17.5

0.8

km/s

riviere-marichalar2015

plx

10.1436

0.0258

mas

gaiacollaboration2018

st_dist

98.5843

0.2507

gaiacollaboration2018

spt

[char]

messina2011

spt_num

54.0

spt_lit

H_alpha

-4.3

0.1nm

riviere-marichalar2015

H_alpha_tenp

485.0

km/s

riviere-marichalar2015

LiI_6708

0.483

0.021

0.1nm

mentuch2008

vsini

16.4

km/s

jayawardhana2006

rot_period

4.84

0.04

days

messina2011

0.43

0.46

mag

YSOPY

Agaia

1.481

0.27335

mag

gaiacollaboration2018

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.
-23.0		lawson2001

pm_dec (mas/yr)
Value	Error	Ref.
40.0		lawson2001

ObsProp

spt ([char])
Value	Error	Ref.
K5.5		luhman2004
K5		skiffBMK
K4		mamajek1999
K5		lawson2001

spt_num ([decimal allowed])
Value	Error	Ref.
55.5		luhman2004
55.0		skiffBMK
54.0		mamajek1999
55.0		lawson2001

spt_lit ([char])
Value	Error	Ref.
K5.5		luhman2004
K5IVe		skiffBMK
K4		mamajek1999
K5		lawson2001

H_alpha (0.1nm)
Value	Error	Ref.
-3.9	2.11	jayawardhana2006
-3.0		lawson2004
-6.8		mamajek1999

H_alpha_tenp (km/s)
Value	Error	Ref.
345.0	86.0	jayawardhana2006
330.0		lawson2004

LiI_6708 (0.1nm)
Value	Error	Ref.
0.4		mamajek1999

rot_period (days)
Value	Error	Ref.
3.95		lawson2001

Derived Stellar Properties

Teff (K)
Value	Error	Ref.
4100.0		riviere-marichalar2015
4182.0	19.0	mentuch2008
4278.0		luhman2004
4355.0		lawson2001
4392.55	127.875	gaiacollaboration2018

log_Teff (log K)
Value	Error	Ref.
3.61		riviere-marichalar2015
3.62	0.02	mentuch2008
3.63		luhman2004
3.64		lawson2001

L_star (Lsun)
Value	Error	Ref.
0.55	0.3	riviere-marichalar2015
0.59		luhman2004
0.525		lawson2001
0.447	0.0075	gaiacollaboration2018

log_L_star (log Lsun)
Value	Error	Ref.
-0.2596	0.142	riviere-marichalar2015
-0.2291		luhman2004
-0.27984		lawson2001

R_star (Rsun)
Value	Error	Ref.
1.28		lawson2001
1.15	0.07	gaiacollaboration2018

M_star (Msun)
Value	Error	Ref.
0.9		mamajek1999
0.8		lawson2001

log_M_star (log Msun)
Value	Error	Ref.
-0.046		mamajek1999
-0.097		lawson2001

age_star (Myr)
Value	Error	Ref.
18.0		mamajek1999
4.0		lawson2001

log_age_star (log yr)
Value	Error	Ref.
7.26		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.
11.111	0.115	henden2016

gaia_g (mag)
Value	Error	Ref.
10.77		gaiacollaboration2016

Mid-Infrared Photometry

L (mag)
Value	Error	Ref.
7.08		lyo2003

S_3p6 (mag)
Value	Error	Ref.
7.09	0.02	megeath2005

S_4p5 (mag)
Value	Error	Ref.
6.86	0.01	megeath2005

S_5p8 (mag)
Value	Error	Ref.
6.57	0.01	megeath2005

S_8 (mag)
Value	Error	Ref.
5.97	0.01	megeath2005

Coordinates

ra (h m s)
Value	Error	Ref.
08 47 01.486		gaiacollaboration2016
08 47 01.657		cutri2003
08 47 01.531		wright2010
08 47 01.634		riviere-marichalar2015
08 47 01.634		messina2011
08 47 01.634		lopez-santiago2010
08 47 01.634		sicilia-aguilar2009
08 47 01.634		gautier2008
08 47 01.634		mentuch2008
08 47 01.634		bouwman2006
08 47 01.634		jayawardhana2006
08 47 01.634		haisch2005
08 47 01.66		luhman2004
08 47 01.634		megeath2005
08 47 01.634		lawson2004
08 47 01.634		lyo2003
08 47 01.879		marton2017
08 47 01.630		skiffBMK
08 47 01.543		henden2016
08 47 01.8		mamajek1999
08 47 01.634		lawson2001
08 47 01.481		gaiacollaboration2018

dec (d m s)
Value	Error	Ref.
-78 59 33.98		gaiacollaboration2016
-78 59 34.51		cutri2003
-78 59 34.11		wright2010
-78 59 34.37		riviere-marichalar2015
-78 59 34.37		messina2011
-78 59 34.37		lopez-santiago2010
-78 59 34.37		sicilia-aguilar2009
-78 59 34.37		gautier2008
-78 59 34.37		mentuch2008
-78 59 34.37		bouwman2006
-78 59 34.37		jayawardhana2006
-78 59 34.37		haisch2005
-78 59 34.5		luhman2004
-78 59 34.37		megeath2005
-78 59 34.37		lawson2004
-78 59 34.37		lyo2003
-78 59 33.76		marton2017
-78 59 34.40		skiffBMK
-78 59 34.14		henden2016
-78 59 35.2		mamajek1999
-78 59 34.37		lawson2001
-78 59 33.96		gaiacollaboration2018

ra_deg (deg)
Value	Error	Ref.
131.75619206	0.1	gaiacollaboration2016
131.756906	60.0	cutri2003
131.7563808	41.4365	wright2010
131.75680833		riviere-marichalar2015
131.75680833		messina2011
131.75680833		lopez-santiago2010
131.75680833		sicilia-aguilar2009
131.75680833		gautier2008
131.75680833		mentuch2008
131.75680833		bouwman2006
131.75680833		jayawardhana2006
131.75680833		haisch2005
131.75691667		luhman2004
131.75680833		megeath2005
131.75680833		lawson2004
131.75680833		lyo2003
131.75783	1134.0	marton2017
131.75679		skiffBMK
131.756428	206.0	henden2016
131.7575		mamajek1999
131.75680833		lawson2001
131.75617011	0.025	gaiacollaboration2018

dec_deg (deg)
Value	Error	Ref.
-78.99277175	0.106	gaiacollaboration2016
-78.99292	120.0	cutri2003
-78.9928097	41.4365	wright2010
-78.99288056		riviere-marichalar2015
-78.99288056		messina2011
-78.99288056		lopez-santiago2010
-78.99288056		sicilia-aguilar2009
-78.99288056		gautier2008
-78.99288056		mentuch2008
-78.99288056		bouwman2006
-78.99288056		jayawardhana2006
-78.99288056		haisch2005
-78.99291667		luhman2004
-78.99288056		megeath2005
-78.99288056		lawson2004
-78.99288056		lyo2003
-78.992712	216.0	marton2017
-78.99289		skiffBMK
-78.992818	134.0	henden2016
-78.99311111		mamajek1999
-78.99288056		lawson2001
-78.99276805	0.0224	gaiacollaboration2018

Star • GDR1 5209023129290383488

Fiducial Data

Non Fiducial Data

Membership

Motion

ObsProp

Derived Stellar Properties

X-ray

Optical Photometry

Mid-Infrared Photometry

Coordinates