Star • GDR1 5209140811392056832

Cluster: eta Cha

Proposed Clusters

Alternate Names: J0844.2-7833; GDR1 5209140811392056832; [GRS2008] 16; 2MASS J08440914-7833457; [LS 2004] 16; WISEA J084409.05-783345.4; RECX 16; GDR2 5209140815689766144; 2MASS 08440914-7833457; ECHA J0844.2-7833; [MHL2005] 16

SIP Output

Aladin

08 44 9.008 -78 33 45.38

FoV: 3'

Fiducial Data

Parameter

Value

Error

Unit

Reference

cluster_name

eta Cha

ra

08 44 09.0085

gaiacollaboration2016

dec

-78 33 45.3785

gaiacollaboration2016

ra_deg

131.03753549

gaiacollaboration2016

dec_deg

-78.56260515

gaiacollaboration2016

pm_ra

-29.538

0.143

gaiacollaboration2018

pm_dec

26.232

0.155

gaiacollaboration2018

plx

10.1539

0.0821

gaiacollaboration2018

st_dist

98.4843

0.7963

gaiacollaboration2018

spt

M5

spt_num

65.0

[decimal allowed]

spt_lit

M5e

H_alpha

-57.8

LiI_6708

0.48

Av

0.0

0.49

Agaia

1.626

0.27135

gaiacollaboration2018

Teff

2880.0

55.5

log_Teff

3.459

0.01

disk_flag

True

disk_desc

Disk

Non Fiducial Data

Membership

cluster_name ([char])
Value	Error	Ref.
unknown		gaiacollaboration2016

mem_num ([integer])
Value	Error	Ref.
0		gaiacollaboration2016

ObsProp

spt ([char])
Value	Error	Ref.
M5.75		luhman2004
M4.5		song2004

spt_num ([decimal allowed])
Value	Error	Ref.
65.75		luhman2004
64.5		song2004

spt_lit ([char])
Value	Error	Ref.
M5.75		luhman2004
M4.5		song2004
M4.5/5.5Ve		skiffBMK

Derived Stellar Properties

Teff (K)
Value	Error	Ref.
2900.0		riviere-marichalar2015
3024.0		luhman2004
3631.78	369.69	gaiacollaboration2018

log_Teff (log K)
Value	Error	Ref.
3.46		riviere-marichalar2015
3.48		luhman2004

L_star (Lsun)
Value	Error	Ref.
0.02	0.01	riviere-marichalar2015
0.01		luhman2004

log_L_star (log Lsun)
Value	Error	Ref.
-1.699	0.8495	riviere-marichalar2015
-2.0		luhman2004

Optical Photometry

gaia_g (mag)
Value	Error	Ref.
16.032		gaiacollaboration2016

Mid-Infrared Photometry

S_3p6 (mag)
Value	Error	Ref.
11.02	0.01	megeath2005

S_4p5 (mag)
Value	Error	Ref.
10.75	0.01	megeath2005

S_5p8 (mag)
Value	Error	Ref.
10.42	0.01	megeath2005

S_8 (mag)
Value	Error	Ref.
9.76	0.01	megeath2005

Coordinates

ra (h m s)
Value	Error	Ref.
08 44 09.009		gaiacollaboration2016
08 44 09.150		cutri2003
08 44 09.055		wright2010
08 44 09.150		riviere-marichalar2015
08 44 09.150		messina2011
08 44 09.150		sicilia-aguilar2009
08 44 09.150		gautier2008
08 44 09.150		bouwman2006
08 44 09.15		luhman2004
08 44 09.14		song2004
08 44 09.150		megeath2005
08 44 09.149		skiffBMK
08 44 09.004		gaiacollaboration2018

dec (d m s)
Value	Error	Ref.
-78 33 45.38		gaiacollaboration2016
-78 33 45.74		cutri2003
-78 33 45.49		wright2010
-78 33 45.74		riviere-marichalar2015
-78 33 45.74		messina2011
-78 33 45.74		sicilia-aguilar2009
-78 33 45.74		gautier2008
-78 33 45.74		bouwman2006
-78 33 45.7		luhman2004
-78 33 45.7		song2004
-78 33 45.74		megeath2005
-78 33 45.68		skiffBMK
-78 33 45.37		gaiacollaboration2018

ra_deg (deg)
Value	Error	Ref.
131.03753549	0.277	gaiacollaboration2016
131.038123	60.0	cutri2003
131.0377282	45.5604	wright2010
131.038125		riviere-marichalar2015
131.038125		messina2011
131.038125		sicilia-aguilar2009
131.038125		gautier2008
131.038125		bouwman2006
131.038125		luhman2004
131.03808333		song2004
131.038125		megeath2005
131.03812		skiffBMK
131.03751702	0.0712	gaiacollaboration2018

dec_deg (deg)
Value	Error	Ref.
-78.56260515	0.468	gaiacollaboration2016
-78.562706	120.0	cutri2003
-78.562637	44.4333	wright2010
-78.56270556		riviere-marichalar2015
-78.56270556		messina2011
-78.56270556		sicilia-aguilar2009
-78.56270556		gautier2008
-78.56270556		bouwman2006
-78.56269444		luhman2004
-78.56269444		song2004
-78.56270556		megeath2005
-78.56269		skiffBMK
-78.56260203	0.0842	gaiacollaboration2018