SDSS J005443.83+070921.2

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

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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.