All names: Gaia EDR3 2556540288936133888, SDSS J005443.84+070921.2, PB 6205, WDS J00547+0709A, ** SKF 2666A, GALEX J005443.8+070921, SDSS J005443.84+070921.3, SDSS J005443.83+070921.2, Gaia DR3 2556540288936133888, SDSS J005443.84+070921.25, Gaia DR2 2556540288936133888
Parameter | Unit | Gaia EDR3 | SDSS DR10 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 00 54 43.85 (0.2) | 00 54 43.84 | 00 54 43.85 (0.3) | 00 54 43.83 (0.2) | ||||||
Declination | 07 09 21.32 (0.2) | 07 09 21.25 | 07 09 21.31 (0.2) | 07 09 21.25 (0.2) | ||||||
Spectral type | DA+M | DA+M1 | DA+M1 | DA | DA+MS | |||||
Effective temperature | [K] | 32636.0 (324) | 28625.0 | 33354.0 (355) | ||||||
log(g) | [cgs] | 7.67 (0.07) | 7.79 | 7.79 (0.08) | ||||||
Mass | [M☉] | 0.5 (0.03) | 0.538 | 0.555 (0.03) | ||||||
log(Luminosity) | [L☉] | -0.53 (0.05) | ||||||||
Cooling age | [Gyr] | 0.0060 (0.0005) | 0.0105 | |||||||
log(H/He) | ||||||||||
log(C/He) | ||||||||||
log(Ca/He) | ||||||||||
log(Ca/H) | ||||||||||
log(C/H) | ||||||||||
log(N/H) | ||||||||||
log(O/H) | ||||||||||
log(Na/H) | ||||||||||
log(Mg/H) | ||||||||||
log(Al/H) | ||||||||||
log(Si/H) | ||||||||||
log(P/H) | ||||||||||
log(S/H) | ||||||||||
log(Sc/H) | ||||||||||
log(Ti/H) | ||||||||||
log(Cr/H) | ||||||||||
log(Mn/H) | ||||||||||
log(Fe/H) | ||||||||||
log(Ni/H) | ||||||||||
Parallax | [mas] | 3.10 (0.3) | 1.73 (0.4) | 3.10 (0.3) | ||||||
Distance | [pc] | 323.02 (33) | 577.14 (137) | 323.02 (33) | ||||||
Composition | H | H | ||||||||
Proper motion (right ascension) | [mas/yr] | 17.78916988 (0.4) | 15.89223032 (0.7) | 17.789 (0.4) | ||||||
Proper motion (declination) | [mas/yr] | 4.249437735 (0.3) | 4.041848415 (0.4) | 4.249 (0.3) | ||||||
Variability | ||||||||||
Magnetic | ||||||||||
Bd | [MG] | |||||||||
Infrared excess (disk) | ||||||||||
Binarity | WDMS | |||||||||
B magnitude | ||||||||||
V magnitude | ||||||||||
R magnitude | ||||||||||
I magnitude | ||||||||||
J magnitude | ||||||||||
H magnitude | ||||||||||
K magnitude | ||||||||||
u magnitude | 18.20 (0.01) | 18.20 (0.01) | 18.20 (0.01) | |||||||
g magnitude | 18.41 (0.007) | 18.41 (0.01) | 18.41 (0.007) | |||||||
r magnitude | 18.72 (0.01) | 18.72 (0.01) | 18.72 (0.01) | |||||||
i magnitude | 18.83 (0.01) | 18.83 (0.01) | 18.83 (0.01) | |||||||
z magnitude | 19.59 (0.06) | 19.59 (0.06) | 19.59 (0.07) | |||||||
G magnitude | 18.62 (0.02) | 18.66 | 18.62 (0.005) | |||||||
BP magnitude | 18.49 (0.02) | 18.44 | ||||||||
RP magnitude | 18.25 (0.04) | 18.16 | ||||||||
Pan g magnitude | ||||||||||
Pan r magnitude | ||||||||||
Pan i magnitude | ||||||||||
Pan z magnitude | ||||||||||
Pan y magnitude | ||||||||||
E(B-V) | 0.030 |
* 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.