CONFIRMED
MILKY WAY
|
| V2416 Sgr | IRAS 17542-2142 | GSC2.4.2 S800009530 | AAVSO 000-BFG-774 |
| SIMBAD Ve 3-61 | Pan-STARRS 81972693167700720 | SAO - | VSX 30116 |
| GAIA DR3 4070389125449668608 | SkyMapper 175716.01-214128.9 | WRAY - | GCVS V2416 Sgr |
| 2MASS J17571599-2141290 | HIP - | Hen 2-312 | BD - |
| WISE J175716.03-214128.9 | TYC - | ESO 589-24 | HD - |
| Bidelman (1954) | - | Allen (1984) | V2416 Sgr (Conf.) | Belzcyński et al. (2001) | V2416 Sgr (Conf.) |
| Gaposchkin (1957) | - | Kenyon (1986) | V2416 Sgr (Conf.) | Akras et al. (2019) | V2416 Sgr (Conf.) |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | V2416 Sgr (Conf.) |
| Right ascension (°) | 269.3167Ref | Parallax (mas) | 0.421±0.090Ref | Reddening E(B-V) (mag) | 2.65±0.17Ref, Note |
| Declination (°) | -21.6914Ref | Distance (kpc) | 2.3Ref 2.74Ref, Note, 2.03Ref, Note |
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| Galactic longitude (°) | 7.5723Ref | Proper motion in α (mas/yr) | 3.10±0.09Ref | ||
| Galactic latitude (°) | 1.4392Ref | Proper motion in δ (mas/yr) | 0.85±0.06Ref |
| X-Ray | YesRef | IR type | SRef | Radio | YesRef |
| X-Ray type | βRef | J (mag) | 6.44Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 5.08Ref | Outbursts | YesRef |
| GALEX NUV (mag) | - | K (mag) | 4.51Ref | Outburst type | Z And?Ref |
| IUE | YesRef | WISE W1 (mag) | 4.21Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 3.96Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 3.96Ref | IPmax (eV) | 114Ref |
| B (mag) | 18.40Ref | WISE W4 (mag) | 3.54Ref | [O III] lines | NoRef |
| V (mag) | 15.78Ref | IRAS 12μm (Jy) | - | He II lines | YesRef |
| R (mag) | - | IRAS 25μm (Jy) | - | [Fe VII] lines | YesRef |
| I (mag) | - | IRAS 60μm (Jy) | - | O VI lines | YesRef |
| BP (mag) | 15.23Ref | IRAS 100μm (Jy) | - | ||
| G (mag) | 11.87Ref | AKARI S09 (Jy) | - | ||
| RP (mag) | 10.27Ref | AKARI S18 (Jy) | 0.48Ref |
| 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 | - |
| Spectral type | M5.5 IIIRef, M5 IIIRef, M2 IIIRef, M6 IIIRef |
Mass (M⊙) | - | Pulsation | - |
| Eff. temperature (K) | 3430Ref, 3300Ref | Radius (R⊙) | - | Type | - |
| IR type | SRef | Luminosity (L⊙) | - | Pulsation period (days) | - |
| Metallicity [Fe/H] | 0.2±0.1Ref | 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⊙) | 460Ref | ||
| Lower limit (K) | 114000Ref | ||||
| Upper limit (K) | - |
The system exhibits several maxima in the light curves observed in 1893, 1930, and 1941, as reported in Herbig (1969). The presence of strong He II and a continuous spectrum supports a symbiotic classification, as noted in Herbig (1969) and further supported by Allen (1978). The spectrum discussed by Stenholm & Acker (1987) also revealed the presence of [Ca VII], [Fe VII], and O VI lines.