Pt 1
CONFIRMED
MILKY WAY
Constellation
Ophiucus |
Equatorial coordinates
α = 17 38 49.546
δ = -23 54 04.148 |
Galactic coordinates
l = 3.4833°
b = 3.9422° |
Suspected |
1980Ref |
Confirmed |
1980Ref |
Symbiotic IR type |
SRef |
Hot component type |
shell-burningRef |
Outbursts |
- |
|
|
Symbiotic Catalogs
Bidelman (1954) |
- |
Allen (1984) |
Pt-1 (Conf.) |
Belzcyński et al. (2001) |
Pt 1 (Conf.) |
Gaposchkin (1957) |
- |
Kenyon (1986) |
Pt-1 (Conf.) |
Akras et al. (2019) |
PN Pt 1 (Conf.) |
Boyarchuk (1969) |
- |
Vaidis (1988, 1991) |
NSV 9354 (Conf.) |
Position
Right ascension (°) |
264.7064Ref |
Parallax (mas) |
0.103±0.022Ref |
Reddening E(B-V) (mag) |
0.83±0.01Ref, Note |
Declination (°) |
-23.9019Ref |
Distance (kpc) |
2.7Ref 6.44Ref, Note, 5.66Ref, Note |
|
|
Galactic longitude (°) |
3.4833Ref |
Proper motion in α (mas/yr) |
-0.16±0.03Ref |
|
|
Galactic latitude (°) |
3.9422Ref |
Proper motion in δ (mas/yr) |
-10.19±0.01Ref |
|
|
Observations
X-Ray |
NoRef |
IR type |
SRef |
Radio |
NoRef |
X-Ray type |
- |
J (mag) |
10.09Ref |
Flickering |
- |
GALEX FUV (mag) |
- |
H (mag) |
8.91Ref |
Outbursts |
- |
GALEX NUV (mag) |
- |
K (mag) |
8.49Ref |
Outburst type |
- |
IUE |
NoRef |
WISE W1 (mag) |
8.24Ref |
Jets |
- |
FUSE |
NoRef |
WISE W2 (mag) |
8.21Ref |
Resolved nebula |
- |
U (mag) |
- |
WISE W3 (mag) |
7.86Ref |
IPmax (eV) |
114Ref |
B (mag) |
17.27Ref |
WISE W4 (mag) |
7.16Ref |
[O III] lines |
No?Ref |
V (mag) |
15.46Ref |
IRAS 12μm (Jy) |
- |
He II lines |
YesRef |
R (mag) |
- |
IRAS 25μm (Jy) |
- |
[Fe VII] lines |
NoRef |
I (mag) |
- |
IRAS 60μm (Jy) |
- |
O VI lines |
YesRef |
BP (mag) |
15.71Ref |
IRAS 100μm (Jy) |
- |
|
|
G (mag) |
13.83Ref |
AKARI S09 (Jy) |
- |
|
|
RP (mag) |
12.54Ref |
AKARI S18 (Jy) |
- |
|
|
Orbit
Orbital period (days) |
- |
γ velocity (km/h) |
-350.00±10.00Ref |
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 |
M1Ref, M0 IIIRef, M3 IIIRef |
Mass (M⊙) |
- |
Pulsation |
- |
Eff. temperature (K) |
- |
Radius (R⊙) |
- |
Type |
- |
IR type |
SRef |
Luminosity (L⊙) |
- |
Pulsation period (days) |
- |
Metallicity [Fe/H] |
- |
|
|
Pulsation ephemeris |
- |
Hot component
Type/Spectral type |
- |
Mass (M⊙) |
- |
Spin period (min) |
- |
Shell-burning/Accreting-only |
shell-burningRef |
Radius (R⊙) |
0.15Ref |
Accretion disk |
- |
Eff. temperature (K) |
125000Ref |
Luminosity (L⊙) |
- |
|
|
Lower limit (K) |
- |
|
|
|
|
Upper limit (K) |
- |
|
|
|
|
Notes
In Peterson (1977), the star was associated with the globular cluster NGC 6401. However, this association was later rejected by Munari et al. (1994), who argued that the symbiotic star is a halo object.
References
- Allen, D. A., 1984, PASA, 5, 3, 369, 1984PASA....5..369A
- Munari, U., Lattanzi, M. G., Bragaglia, A., 1994, A&A, 292, 501, 1994A&A...292..501M
- Peterson, A. W., 1977, PASP, 89, 129, 1977PASP...89..129P
- Torres-Peimbert, S., Recillas-Cruz, E., Peimbert, M., 1980, RMxAA, 5, 51, 1980RMxAA...5...51T
Last updated: December 1, 2021