POSSIBLE
MILKY WAY
|
| M 1-57 | IRAS 18375-1042 | GSC2.4.2 S9MQ169173 | AAVSO - |
| SIMBAD PN M 1-57 | Pan-STARRS 95202800844124643 | SAO - | VSX - |
| GAIA DR3 4107103777208876928 | SkyMapper 184020.25-103947.3 | WRAY - | GCVS - |
| 2MASS J18402025-1039472 | HIP - | Hen - | BD - |
| WISE J184020.25-103947.5 | TYC - | ESO - | HD - |
| Bidelman (1954) | - | Allen (1984) | - | Belzcyński et al. (2001) | - |
| Gaposchkin (1957) | - | Kenyon (1986) | - | Akras et al. (2019) | - |
| Boyarchuk (1969) | - | Vaidis (1988, 1991) | - |
| Right ascension (°) | 280.0844Ref | Parallax (mas) | 0.221±0.083Ref | Reddening E(B-V) (mag) | 1.46±0.05Ref, Note |
| Declination (°) | -10.6631Ref | Distance (kpc) | 4.27Ref, Note, 3.23Ref, Note | ||
| Galactic longitude (°) | 22.1811Ref | Proper motion in α (mas/yr) | -3.81±0.10Ref | ||
| Galactic latitude (°) | -2.4087Ref | Proper motion in δ (mas/yr) | -4.87±0.09Ref |
| X-Ray | - | IR type | D'?Ref | Radio | YesRef |
| X-Ray type | - | J (mag) | 12.58Ref | Flickering | - |
| GALEX FUV (mag) | - | H (mag) | 12.28Ref | Outbursts | - |
| GALEX NUV (mag) | - | K (mag) | 11.54Ref | Outburst type | - |
| IUE | NoRef | WISE W1 (mag) | 10.19Ref | Jets | - |
| FUSE | NoRef | WISE W2 (mag) | 8.92Ref | Resolved nebula | - |
| U (mag) | - | WISE W3 (mag) | 3.67Ref | IPmax (eV) | 99Ref |
| B (mag) | - | WISE W4 (mag) | -0.07Ref | [O III] lines | YesRef |
| V (mag) | - | IRAS 12μm (Jy) | 1.27Ref | He II lines | YesRef |
| R (mag) | - | IRAS 25μm (Jy) | 13.10Ref | [Fe VII] lines | YesRef |
| I (mag) | - | IRAS 60μm (Jy) | 16.00Ref | O VI lines | NoRef |
| BP (mag) | 14.88Ref | IRAS 100μm (Jy) | 151.00Ref | ||
| G (mag) | 15.50Ref | AKARI S09 (Jy) | 0.41Ref | ||
| RP (mag) | 13.59Ref | AKARI S18 (Jy) | 5.21Ref |
| 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 | - | Mass (M⊙) | - | Pulsation | - |
| Eff. temperature (K) | - | Radius (R⊙) | - | Type | - |
| IR type | D'?Ref | Luminosity (L⊙) | - | Pulsation period (days) | - |
| Metallicity [Fe/H] | - | Pulsation ephemeris | - |
| 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) | - |
Listed as a true PN in the HASH Database of PNe (Parker et al., 2016), there are notes indicating that it is a possible symbiotic contaminant based on higher resolution spectroscopy. The spectrum reveals numerous emission lines, including Balmer lines of hydrogen, He I, He II, [O III], and even [Fe VII].