ASAS J185604-2327.2
POSSIBLE
MILKY WAY
Constellation
Sagittarius |
Equatorial coordinates
α = 18 56 04.011
δ = -23 27 14.041 |
Galactic coordinates
l = 12.2758°
b = -11.4186° |
| Suspected |
2019Ref |
| Confirmed |
- |
| Symbiotic IR type |
S?Ref |
| Hot component type |
accreting-only?Ref |
| Outbursts |
- |
|
|
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 (°) |
284.0167Ref |
Parallax (mas) |
0.193±0.020Ref |
Reddening E(B-V) (mag) |
0.16±0.01Ref, Note |
| Declination (°) |
-23.4539Ref |
Distance (kpc) |
4.85Ref, Note, 4.75Ref, Note |
|
|
| Galactic longitude (°) |
12.2758Ref |
Proper motion in α (mas/yr) |
1.03±0.02Ref |
|
|
| Galactic latitude (°) |
-11.4186Ref |
Proper motion in δ (mas/yr) |
-5.51±0.02Ref |
|
|
Observations
| X-Ray |
- |
IR type |
S?Ref |
Radio |
- |
| X-Ray type |
- |
J (mag) |
9.22Ref |
Flickering |
NoRef |
| GALEX FUV (mag) |
- |
H (mag) |
8.29Ref |
Outbursts |
- |
| GALEX NUV (mag) |
- |
K (mag) |
7.99Ref |
Outburst type |
- |
| IUE |
NoRef |
WISE W1 (mag) |
7.91Ref |
Jets |
- |
| FUSE |
NoRef |
WISE W2 (mag) |
7.99Ref |
Resolved nebula |
- |
| U (mag) |
- |
WISE W3 (mag) |
7.81Ref |
IPmax (eV) |
13.6Ref |
| B (mag) |
14.14Ref |
WISE W4 (mag) |
7.65Ref |
[O III] lines |
NoRef |
| V (mag) |
12.70Ref |
IRAS 12μm (Jy) |
- |
He II lines |
NoRef |
| R (mag) |
12.58Ref |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
| I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
NoRef |
| BP (mag) |
13.13Ref |
IRAS 100μm (Jy) |
- |
|
|
| G (mag) |
11.97Ref |
AKARI S09 (Jy) |
- |
|
|
| RP (mag) |
10.86Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
| Orbital period (days) |
- |
γ velocity (km/h) |
-27.14±5.40Ref |
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 |
- |
|
|
|
|
Cool component
| Spectral type |
M3 IIIRef |
Mass (M⊙) |
- |
Pulsation |
Yes?Ref |
| Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
SRRef |
| IR type |
S?Ref |
Luminosity (L⊙) |
- |
Pulsation period (days) |
231.4Ref |
| Metallicity [Fe/H] |
- |
|
|
Pulsation ephemeris |
- |
Hot component
| Type/Spectral type |
- |
Mass (M⊙) |
- |
Spin period (min) |
- |
| Shell-burning/Accreting-only |
accreting-only?Ref |
Radius (R⊙) |
- |
Accretion disk |
- |
| Eff. temperature (K) |
- |
Luminosity (L⊙) |
- |
|
|
| Lower limit (K) |
- |
|
|
|
|
| Upper limit (K) |
- |
|
|
|
|
Notes
Symbiotic candidate selected for AAVSO observing campaing (AAVSO Alert 681) by Adrian B. Lucy (Columbia University).
References
- Lucy, A. B., 2021, PhDT, 1, 2021PhDT........17L
- Waagen, E. O., 2020, AAVSO Alert Notice, 708, 1, 2020AAN...708....1W
Last updated: May 3, 2022