Ma 250

Constellation
Tucana

Equatorial coordinates
α = 00 48 42.952
δ = -73 03 11.348

Galactic coordinates
l = 303.2080°
b = -44.0736°

Suspected	2002^Ref
Re-classified	2003^Ref
Type	Be star^Ref

Identifiers

Ma 250	IRAS -	GSC2.4.2 S0XH458606	AAVSO -
SIMBAD [MA93] 250	Pan-STARRS -	SAO -	VSX -
GAIA DR3 4685950607187395584	SkyMapper 004842.95-730311.4	WRAY -	GCVS -
2MASS J00484294-7303113	HIP -	Hen -	BD -
WISE J004842.93-730311.3	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 (°)	12.1790^Ref	Parallax (mas)	-0.046±0.035^Ref	Reddening E(B-V) (mag)	0.88±0.22^Ref ^{, Note}
Declination (°)	-73.0532^Ref	Distance (kpc)	62.1±1.9^Ref 18.52^Ref ^{, Note}, 13.27^Ref ^{, Note}
Galactic longitude (°)	303.2080^Ref	Proper motion in α (mas/yr)	0.64±0.05^Ref
Galactic latitude (°)	-44.0736^Ref	Proper motion in δ (mas/yr)	-1.17±0.04^Ref

Links

SIMBAD CDS Portal

Notes

Included in the list of possible symbiotic stars or closely related objects in Munari & Zwitter (2002), the spectrum of this object shows Balmer lines in emission and a flat continuum. In Cieslinski et al. (2013), the object was classified as a Be star. In Pawlak et al. (2016), the star was classified as an eclipsing binary with a period of 58.4 days.

References

Cieslinski, D., Diaz, M. P., Mennickent, R. E. et al., 2013, IBVS, 6088, 1, 2013IBVS.6088....1C
Munari, U., Zwitter, T., 2002, A&A, 383, 188, 2002A&A...383..188M
Pawlak, M., Soszyński, I., Udalski, A. et al., 2016, AcA, 66, 4, 421, 2016AcA....66..421P