CONFIRMED
MILKY WAY
|
| V2601 Sgr | IRAS 18349-2244 | GSC2.4.2 SA6X069120 | AAVSO 000-BFG-954 |
| SIMBAD EM* AS 313 | Pan-STARRS 80762795085923121 | SAO - | VSX 30301 |
| GAIA DR3 4079214222462345728 | SkyMapper 183802.06-224151.7 | WRAY - | GCVS V2601 Sgr |
| 2MASS J18380206-2241515 | HIP - | Hen - | BD - |
| WISE J183802.06-224151.7 | TYC - | ESO - | HD - |
| Bidelman (1954) | - | Allen (1984) | V2601 Sgr (Conf.) | Belzcyński et al. (2001) | V2601 Sgr (Conf.) |
| Gaposchkin (1957) | - | Kenyon (1986) | V2601 Sgr (Conf.) | Akras et al. (2019) | V2601 Sgr (Conf.) |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | V2601 Sgr (Conf.) |
| Right ascension (°) | 279.5086Ref | Parallax (mas) | 0.181±0.036Ref | Reddening E(B-V) (mag) | 0.26±0.01Ref, Note |
| Declination (°) | -22.6977Ref | Distance (kpc) | 2.3Ref, 6.1Ref 5.37Ref, Note, 5.05Ref, Note |
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| Galactic longitude (°) | 11.1511Ref | Proper motion in α (mas/yr) | -2.65±0.04Ref | ||
| Galactic latitude (°) | -7.3516Ref | Proper motion in δ (mas/yr) | -3.28±0.03Ref |
| X-Ray | NoRef | IR type | SRef | Radio | NoRef |
| X-Ray type | - | J (mag) | 9.29Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 8.30Ref | Outbursts | - |
| GALEX NUV (mag) | - | K (mag) | 7.95Ref | Outburst type | - |
| IUE | NoRef | WISE W1 (mag) | 7.76Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 7.74Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 7.26Ref | IPmax (eV) | 54.4Ref |
| B (mag) | 11.50Ref | WISE W4 (mag) | 6.55Ref | [O III] lines | Yes?Ref |
| V (mag) | - | IRAS 12μm (Jy) | 0.50Ref | He II lines | YesRef |
| R (mag) | - | IRAS 25μm (Jy) | 0.50Ref | [Fe VII] lines | NoRef |
| I (mag) | - | IRAS 60μm (Jy) | 0.45Ref | O VI lines | NoRef |
| BP (mag) | 14.16Ref | IRAS 100μm (Jy) | 16.70Ref | ||
| G (mag) | 12.62Ref | AKARI S09 (Jy) | - | ||
| RP (mag) | 11.37Ref | AKARI S18 (Jy) | - |
| Orbital period (days) | 850Ref | 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 | Yes?Ref | Mass ratio | - | ||
| Orbital ephemeris | Min (pg) = 2429850 + 850 x ERef |
| Spectral type | M1 IIIRef, M2 IIIRef | Mass (M⊙) | - | Pulsation | - |
| Eff. temperature (K) | 3720Ref | Radius (R⊙) | - | Type | - |
| IR type | SRef | Luminosity (L⊙) | - | Pulsation period (days) | - |
| Metallicity [Fe/H] | - | Pulsation ephemeris | - |
| Type/Spectral type | WDRef | Mass (M⊙) | - | Spin period (min) | - |
| Shell-burning/Accreting-only | shell-burningRef | Radius (R⊙) | - | Accretion disk | - |
| Eff. temperature (K) | - | Luminosity (L⊙) | 90Ref | ||
| Lower limit (K) | 54000Ref | ||||
| Upper limit (K) | 80000Ref |
Hoffleit (1968) claimed that the star has a symbiotic spectrum. Additionally, Herbig (1969) reported an early M-type spectrum with bright H, He I, and He II lines. The star was also identified as a variable with a period of 850 days.