BD+42 3250

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

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.