BD+42 3250

All names: KOI-8128, uvby98 004203250, 2MASS J19074053+4218220, CEL 4705, TYC 3128-248-1, GEN# +0.04203250, UBV M 3220, TIC 158387021, Gaia DR3 2105469320138052864, KIC 6848529, Gaia DR2 2105469320138052864, TD1 30868, KeplerBD, GSC 03128-00248, LAMOST J190740.52+421822.0, HIP 93941, BD+42 3250, HIC 93941

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 19 07 40.50 19 07 40.54 (0.03)
Declination 42 18 22.00 42 18 22.02 (0.03)
Spectral type sdB sdB0/1
Effective temperature [K] 28700.0 (1000)
log(g) [cgs] 5.08 (0.02)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 4.03 (0.04) 4.14 (0.03)
Distance [pc] 248.19 (2) 241.39 (2)
Composition
Proper motion (right ascension) [mas/yr] 3.682 (0.07) 3.778 (0.04)
Proper motion (declination) [mas/yr] -20.188 (0.08) -20.293 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 10.40
V magnitude 10.66 (0.02)
R magnitude
I magnitude
J magnitude 11.07 (0.02) 11.07 (0.02)
H magnitude 11.24 (0.01) 11.24 (0.01)
K magnitude 11.32 (0.02) 11.32 (0.02)
u magnitude
g magnitude 10.41
r magnitude
i magnitude 11.19
z magnitude
G magnitude 10.59 (0.0006) 10.59 (0.003)
BP magnitude 10.47 (0.002)
RP magnitude 10.81 (0.001)
Pan g magnitude 10.20
Pan r magnitude 10.68
Pan i magnitude 11.05
Pan z magnitude 11.34
Pan y magnitude 11.59
E(B-V) 0.021

* Constant surface field

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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.