[RP2006] 254

SUSPECTED LMC   Equatorial coordinates α = 85.907355 ± 0.117300 | 05 43 37.765197 δ = -69.336173 ± 0.129800 | -69 20 10.224210   Constellation Dorado Symbiotic IR Type   Spectral Type   Magnitude range (V)   Outbursts No

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Identifiers

[RP2006] 254	GSC –	TYC –	WRAY –
SIMBAD [RP2006] 254	HIP –	SAO –	Hen –
BD –	IRAS –	GAIA DR2 4657628669448472320	ESO –
HD –	2MASS J05433775-6920102	WISE –	AAVSO –

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Position

Right ascension (°)	85.907355 ± 0.117300 refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Parallax (mas)	–	Reddening E(B-V) (mag)	1.741 ± 0.251refSchlafly, E. F., Finkbeiner, D. P., 2011, ApJ, 737, 103, 2011ApJ…737..103S
Declination (°)	-69.336173 ± 0.129800refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Distance (kpc)	49.97 ± 0.19refPietrzyński, G., Graczyk, D., Gieren, W., et al., 2013, Nature, 495, 76, 2013Natur.495…76P
Galactic longitude (°)	279.685746 ± 0.129800refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in α (mas/yr)	2.095 ± 0.228refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G
Galactic latitude (°)	-31.212998 ± 0.117300refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	Proper motion in δ (mas/yr)	0.371 ± 0.284refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G

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Observations

U (mag)	17.01refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	X-Ray		Flickering
B (mag)	17.52refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	X-Ray type		Outbursts	No
V (mag)	17.08refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	IUE	No	Type
R (mag)		IRAS flux at 12 μm (Jy)		IPmax (eV)
I (mag)		IRAS flux at 25 μm (Jy)		OVI lines
G (mag)	17.14refGaia Collaboration, Brown, A. G. A., Vallenari, A., et al., 2018, A&A, 616, A1, 2018A&A…616A…1G	IRAS flux at 60 μm (Jy)
J (mag)	16.12refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	IRAS flux at 100 μm (Jy)
H (mag)	16.06refCutri, R. M., Skrutskie, M. F., van Dyk, S., et al., 2012, VizieR Online Data Catalog: II/281,2012yCat.2281….0C	WISE W1 (mag)
K (mag)	16.45refMiszalski, B., Napiwotzki, R., Cioni, M. R. L., et al., 2011, A&A, 531, A157,2011A&A…531A.157M	WISE W2 (mag)
L (mag)		WISE W3 (mag)
		WISE W4 (mag)
		Radio
		Radio flux (mJy)

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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
Ephemeris type				Mass ratio
Ephemeris T0 (JD)

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Cool component

Spectral type		Mass (M⊙)		Pulsation
Eff. temperature (K)		Radius (R⊙)		Type
IR type		Luminosity (L⊙)		Pulsation period (days)
Metallicity [Fe/H]				Ephemeris type
				Ephemeris T0 (JD)

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Hot component

Type/Spectra		Mass (M⊙)		Spin period (min)
Eff. temperature (K)		Radius (R⊙)		Accretion disk
Lower limit (K)		Luminosity (L⊙)
Upper limit (K)

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Links

SIMBAD     CDS Portal

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Notes

Reid (2014) reported diffuse and extended Hα nebula associated with the object and classified it as a possible symbiotic star.

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References

• Reid, W. A., 2014, MNRAS, 438, 2642, 2014MNRAS.438.2642R

Last updated: Feb 5, 2019 @ 10:01 pm