M81 HII 403

POSSIBLE M81

Constellation
Ursa Major

Equatorial coordinates
α = 09 56 12.321
δ = +69 07 41.731

Galactic coordinates
l = 141.9793°
b = 40.9112°

Suspected	2017^Ref
Confirmed	-
Symbiotic IR type	D?^Ref
Hot component type	shell-burning?^Ref
Outbursts	-

Identifiers

M81 HII 403	IRAS -	GSC2.4.2 N7SG026358	AAVSO -
SIMBAD PSK 403	Pan-STARRS 190951490514324683	SAO -	VSX -
GAIA DR3 1070471296599811328	SkyMapper -	WRAY -	GCVS -
2MASS -	HIP -	Hen -	BD -
WISE J095611.73+690739.3	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 (°)	149.0513^Ref	Parallax (mas)	0.398±1.166^Ref	Reddening E(B-V) (mag)	0.07±0.0^Ref ^{, Note}
Declination (°)	69.1283^Ref	Distance (kpc)	3620±120^Ref 1.03^Ref ^{, Note}, 2.11^Ref ^{, Note}
Galactic longitude (°)	141.9793^Ref	Proper motion in α (mas/yr)	-1.43±1.01^Ref
Galactic latitude (°)	40.9112^Ref	Proper motion in δ (mas/yr)	-0.90±1.47^Ref

Observations

X-Ray	No^Ref	IR type	D?^Ref	Radio	-
X-Ray type	-	J (mag)	-	Flickering	-
GALEX FUV (mag)	-	H (mag)	-	Outbursts	-
GALEX NUV (mag)	-	K (mag)	-	Outburst type	-
IUE	No^Ref	WISE W1 (mag)	14.97^Ref	Jets	-
FUSE	No^Ref	WISE W2 (mag)	15.36^Ref	Resolved nebula	-
U (mag)	-	WISE W3 (mag)	11.60^Ref	IPmax (eV)	-
B (mag)	-	WISE W4 (mag)	8.89^Ref	[O III] lines	-
V (mag)	-	IRAS 12μm (Jy)	-	He II lines	-
R (mag)	-	IRAS 25μm (Jy)	-	[Fe VII] lines	-
I (mag)	-	IRAS 60μm (Jy)	-	O VI lines	-
BP (mag)	20.74^Ref	IRAS 100μm (Jy)	-
G (mag)	20.91^Ref	AKARI S09 (Jy)	-
RP (mag)	19.86^Ref	AKARI S18 (Jy)	-

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	-
Eff. temperature (K)	-	Radius (R_⊙)	-	Type	-
IR type	D?^Ref	Luminosity (L_⊙)	-	Pulsation period (days)	-
Metallicity [Fe/H]	-			Pulsation ephemeris	-

Hot component

Type/Spectral type	-	Mass (M_⊙)	-	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

Notes

Suspected to be a symbiotic binary in Iłkiewicz & Mikołajewska (2017) based on the position of the star in the [O III] diagnostic diagrams.

References

Iłkiewicz, K., Mikołajewska, J., 2017, A&A, 606, A110, 2017A&A...606A.110I
Stanghellini, L., Magrini, L., Villaver, E. et al., 2010, A&A, 521, A3, 2010A&A...521A...3S

Last updated: January 12, 2019