All names: SDSS J054217.25+620350.6, SDSS J054217.28+620350.5, Gaia DR3 286543798332392320, Gaia DR2 286543798332392320, GALEX J054217.2+620350, SDSSJ054217.27+620350.5
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 05 42 17.27 | 05 42 17.28 (0.03) | ||
Declination | 62 03 50.50 | 62 03 50.56 (0.03) | ||
Spectral type | sdB | sdB | ||
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] | 0.12 (0.09) | 0.08 (0.06) | |
Distance | [pc] | 8203.45 (6104) | 13262.60 (11046) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 7.926 (0.08) | 7.913 (0.04) | |
Proper motion (declination) | [mas/yr] | -4.367 (0.1) | -4.32 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | ||||
V magnitude | ||||
R magnitude | ||||
I magnitude | ||||
J magnitude | ||||
H magnitude | ||||
K magnitude | ||||
u magnitude | 17.16 (0.008) | 17.16 (0.008) | ||
g magnitude | 16.77 (0.005) | 16.77 (0.005) | ||
r magnitude | 17.00 (0.006) | 17.00 (0.006) | ||
i magnitude | 17.21 (0.007) | 17.21 (0.007) | ||
z magnitude | 17.39 (0.01) | 17.39 (0.01) | ||
G magnitude | 16.91 (0.0008) | 16.88 (0.003) | ||
BP magnitude | 16.87 (0.006) | |||
RP magnitude | 16.90 (0.005) | |||
Pan g magnitude | 16.83 (0.005) | |||
Pan r magnitude | 17.00 (0.004) | |||
Pan i magnitude | 17.23 (0.003) | |||
Pan z magnitude | 17.39 (0.009) | |||
Pan y magnitude | 17.46 (0.009) | |||
E(B-V) | 0.143 |
* Constant surface field
Spectra without link are available upon request
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.