SDSS J064809.54+380850.0

All names: GALEX J064809.5+380850, SDSS J064809.54+380850.1, Gaia DR2 944352498234800640, Gaia DR3 944352498234800640, SDSSJ064809.54+380850.1, SDSS J064809.54+380850.0

Parameter Unit Geier 2020 Stilism Simbad
Right ascension 06 48 09.54 06 48 09.55 (0.2)
Declination 38 08 50.10 38 08 50.04 (0.1)
Spectral type sdB sdB
Effective temperature [K] 29300.0 (800)
log(g) [cgs] 5.26 (0.1)
Mass [M☉]
log(Luminosity) [L☉]
Cooling age [Gyr]
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 0.25 (0.2) 0.40 (0.2)
Distance [pc] 3946.33 (3066) 2488.18 (1067)
Composition
Proper motion (right ascension) [mas/yr] -0.973 (0.4) -0.525 (0.2)
Proper motion (declination) [mas/yr] -0.607 (0.3) -1.1 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.40 (0.02) 18.40 (0.02)
g magnitude 18.28 (0.007) 18.28 (0.007)
r magnitude 18.44 (0.008) 18.44 (0.008)
i magnitude 18.52 (0.01) 18.52 (0.01)
z magnitude 18.65 (0.03) 18.65 (0.03)
G magnitude 18.37 (0.003) 18.33 (0.003)
BP magnitude 18.33 (0.03)
RP magnitude 18.18 (0.03)
Pan g magnitude 18.35 (0.005)
Pan r magnitude 18.45 (0.005)
Pan i magnitude 18.57 (0.005)
Pan z magnitude 18.67 (0.01)
Pan y magnitude 18.67 (0.04)
E(B-V) 0.101

* 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.