CN Cha

CONFIRMED MILKY WAY

Constellation
Chamaleon

Equatorial coordinates
α = 10 59 57.591
δ = -79 57 00.952

Galactic coordinates
l = 298.0070°
b = -18.1614°

Suspected	2020^Ref
Confirmed	2020^Ref
Symbiotic IR type	S^Ref
Hot component type	shell-burning^Ref
Outbursts	Yes^Ref - SyN^Ref

Identifiers

CN Cha	IRAS 10590-7940	GSC2.4.2 S44I033632	AAVSO 000-BDL-958
SIMBAD V* CN Cha	Pan-STARRS -	SAO -	VSX 9351
GAIA DR3 5199012973569013120	SkyMapper -	WRAY -	GCVS CN Cha
2MASS J10595765-7957009	HIP -	Hen -	BD -
WISE J105957.60-795701.0	TYC -	ESO -	HD -

Symbiotic Catalogs

Bidelman (1954)	-	Allen (1984)	-	Belzcyński et al. (2001)	-
Gaposchkin (1957)	-	Kenyon (1986)	-	Akras et al. (2019)	-
Boyarchuk (1969)	-	Vaidis (1988, 1991)	-

Position

Right ascension (°)	164.9900^Ref	Parallax (mas)	0.322±0.020^Ref	Reddening E(B-V) (mag)	0.15±0.01^Ref ^{, Note}
Declination (°)	-79.9503^Ref	Distance (kpc)	3.05^Ref ^{, Note}, 3.06^Ref ^{, Note}
Galactic longitude (°)	298.0070^Ref	Proper motion in α (mas/yr)	-5.49±0.03^Ref
Galactic latitude (°)	-18.1614^Ref	Proper motion in δ (mas/yr)	7.06±0.02^Ref

Observations

X-Ray	No^Ref	IR type	S^Ref	Radio	-
X-Ray type	-	J (mag)	7.36^Ref	Flickering	Yes?^Ref
GALEX FUV (mag)	-	H (mag)	6.42^Ref	Outbursts	Yes^Ref
GALEX NUV (mag)	-	K (mag)	5.67^Ref	Outburst type	SyN^Ref
IUE	No^Ref	WISE W1 (mag)	4.43^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	3.54^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	2.30^Ref	IPmax (eV)	-
B (mag)	10.75^Ref	WISE W4 (mag)	1.36^Ref	[O III] lines	-
V (mag)	10.01^Ref	IRAS 12μm (Jy)	4.70^Ref	He II lines	-
R (mag)	13.26^Ref	IRAS 25μm (Jy)	2.72^Ref	[Fe VII] lines	-
I (mag)	13.26^Ref	IRAS 60μm (Jy)	0.40^Ref	O VI lines	-
BP (mag)	7.71^Ref	IRAS 100μm (Jy)	1.00^Ref
G (mag)	7.44^Ref	AKARI S09 (Jy)	5.00^Ref
RP (mag)	6.96^Ref	AKARI S18 (Jy)	2.90^Ref

Orbit

Orbital period (days)	-	γ velocity (km/h)	-	Size of giant’s orbit (AU)	-
Eccentricity	-	RV of giant (km/h)	-	Separation (AU)	-
Inclination (°)	-	Inferior conj. of giant (JD)	-	Mass function	-
Eclipses	-			Mass ratio	-
Orbital ephemeris	-

Cool component

Spectral type	-	Mass (M_⊙)	-	Pulsation	Yes^Ref
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	Mira^Ref
IR type	S^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	253.24^Ref
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

Type/Spectral type	WD^Ref	Mass (M_⊙)	0.55-0.57^Ref	Spin period (min)	-
Shell-burning/Accreting-only	shell-burning^Ref	Radius (R_⊙)	-	Accretion disk	-
Eff. temperature (K)	-	Luminosity (L_⊙)	-
Lower limit (K)	-
Upper limit (K)	-

Links

SIMBAD CDS Portal ARAS Database

Notes

Suspected by Lancaster et al. (2020) to be a symbiotic nova, the object experienced an outburst starting in 2013.

References

Kato, M., Hachisu, I., 2023, ApJ, 951, 2, 128, 2023ApJ...951..128K
Lancaster, L., Greene, J. E., Ting, Y. et al., 2020, AJ, 160, 3, 125, 2020AJ....160..125L
Merc, J., Beck, P. G., Mathur, S. et al., 2023, arXiv, arXiv:2312.16126, 2023arXiv231216126M

Last updated: January 12, 2024