JL 87

All names: Gaia DR1 6356541530677563136, GALAH 170802005501352, Gaia DR3 6356541530677563136, TIC 392758248, GEN# +6.20022087, GSC 09474-00242, uvby98 620022087, 2MASS J21483773-7620445, JL87, TYC 9474-242-1, EC 21435-7634, Gaia DR2 6356541530677563136, JL 87

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 21 48 37.71 21 48 37.74 (0.02)
Declination -76 20 44.76 -76 20 44.61 (0.03)
Spectral type He-sdB sdBHe
Effective temperature [K] 25800.0 (1000)
log(g) [cgs] 4.80 (0.3)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 1.19 (0.05) 1.23 (0.03)
Distance [pc] 841.04 (35) 815.66 (19)
Composition
Proper motion (right ascension) [mas/yr] -0.349 (0.07) -0.436 (0.03)
Proper motion (declination) [mas/yr] 3.481 (0.08) 3.263 (0.03)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 11.96
V magnitude 12.07
R magnitude
I magnitude
J magnitude 12.31 (0.03) 12.31 (0.03)
H magnitude 12.39 (0.03) 12.39 (0.03)
K magnitude 12.41 (0.03) 12.41 (0.03)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 12.01 (0.0004) 11.99 (0.003)
BP magnitude 11.88 (0.008)
RP magnitude 12.11 (0.002)
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
E(B-V) 0.045

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit




The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.