FBS 2255+386

All names: 2MASS J22575983+3851401, Gaia DR2 1928530892472855168, Gaia EDR3 1928530892472855168, TIC 346338396, FBS 2255+386, FBS2255+386, Gaia DR3 1928530892472855168, FBS B 190

Parameter Unit Gaia EDR3 Geier 2020 Stilism Simbad
Right ascension 22 57 59.84 (0.03) 22 57 59.92 22 57 59.84 (0.03)
Declination 38 51 39.70 (0.03) 38 51 38.80 38 51 39.84 (0.03)
Spectral type He-sdO sdOC
Effective temperature [K]
log(g) [cgs]
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.64 (0.04) 0.50 (0.05) 0.64 (0.04)
Distance [pc] 1566.42 (105) 1990.05 (201) 1566.42 (105)
Composition
Proper motion (right ascension) [mas/yr] 1.746 (0.04) 1.781 (0.06) 1.746 (0.04)
Proper motion (declination) [mas/yr] -8.439 (0.04) -8.506 (0.06) -8.439 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.06 (0.1) 16.06 (0.1)
H magnitude 16.00 (0.2) 16.00 (0.2)
K magnitude 15.86
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.51 (0.003) 15.52 (0.0007) 15.51 (0.003)
BP magnitude 15.39 (0.004) 15.34 (0.005)
RP magnitude 15.70 (0.005) 15.70 (0.002)
Pan g magnitude 15.36 (0.004)
Pan r magnitude 15.72 (0.003)
Pan i magnitude 16.04 (0.003)
Pan z magnitude 16.28 (0.004)
Pan y magnitude 16.45 (0.008)
E(B-V) 0.099

* 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.