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

Fiducial Data

Parameter	Value	Error	Unit	Reference
cluster_name	eta Cha		[char]	messina2011
ra	08 44 09.0085		h m s	gaiacollaboration2016
dec	-78 33 45.3785		d m s	gaiacollaboration2016
ra_deg	131.03753549		deg	gaiacollaboration2016
dec_deg	-78.56260515		deg	gaiacollaboration2016
pm_ra	-29.538	0.143	mas/yr	gaiacollaboration2018
pm_dec	26.232	0.155	mas/yr	gaiacollaboration2018
plx	10.1539	0.0821	mas	gaiacollaboration2018
st_dist	98.4843	0.7963	pc	gaiacollaboration2018
spt	M5		[char]	messina2011
spt_num	65.0		[decimal allowed]	messina2011
spt_lit	M5e		[char]	messina2011
H_alpha	-57.8		0.1nm	song2004
LiI_6708	0.48		0.1nm	song2004
Av	0.0	0.49	mag	YSOPY
Agaia	1.626	0.27135	mag	gaiacollaboration2018
Teff	2880.0	55.5	K	YSOPY
log_Teff	3.459	0.01	log K	YSOPY
disk_flag	True		[boolean]	bouwman2006
disk_desc	Disk		[char]	bouwman2006
fdisk	0.04			gautier2008
gaia_g	16.2505	0.0026	mag	gaiacollaboration2018
gaia_bp	18.2346	0.0337	mag	gaiacollaboration2018
gaia_rp	14.8482	0.0071	mag	gaiacollaboration2018
tm_J	12.505	0.024	mag	cutri2003
tm_H	11.976	0.022	mag	cutri2003
tm_K	11.618	0.024	mag	cutri2003
tm_flags	"AAA,0"		[char]	cutri2003
S_3p6	11.02	0.01	mag	sicilia-aguilar2009
S_4p5	10.75	0.01	mag	sicilia-aguilar2009
S_5p8	10.42	0.01	mag	sicilia-aguilar2009
S_8	9.76	0.01	mag	sicilia-aguilar2009
S_24_fd	8.68	0.08	mJy	gautier2008
S_24	7.11	0.07	mag	sicilia-aguilar2009
S_13	7.2		mJy	bouwman2006
S_33	16.6		mJy	bouwman2006
W_3p4	11.214	0.023	mag	wright2010
W_4p6	10.701	0.02	mag	wright2010
W_12	9.041	0.026	mag	wright2010
W_22	7.212	0.072	mag	wright2010
wise_flags	"AAAA,0000"		[char]	wright2010

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