SDSS J075452.85+194907.0

All names: SDSS J075452.85+194907.00, SDSS J075452.85+194907.0, Gaia DR3 670319192316218496, Gaia DR2 670319192316218496, Gaia EDR3 670319192316218496

Parameter Unit Gaia EDR3 SDSS DR10 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 07 54 52.87 (0.1) 07 54 52.85 07 54 52.87 (0.2) 07 54 52.85 (0.1)
Declination 19 49 06.85 (0.1) 19 49 07.02 19 49 06.85 (0.1) 19 49 07.05 (0.1)
Spectral type DB DB DB DB+MS
Effective temperature [K] 22636.0 20140.0 19519.0 21300.0 (252) 22000.0 (400)
log(g) [cgs] 7.94 8.14 8.15 7.90 (0.03) 7.84 (0.03)
Mass [M] 0.571 0.679 0.684 0.523 (0.009)
log(Luminosity) [L]
Cooling age [Gyr] 0.1083
log(H/He) <-4.839 <-4.01
log(C/He)
log(Ca/He) <-4.7
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 2.59 (0.2) 3.16 (0.2) 2.59 (0.2)
Distance [pc] 385.94 (23) 316.95 (24) 380.00 385.95 (23)
Composition He
Proper motion (right ascension) [mas/yr] 12.87112656 (0.2) 13.69501687 (0.4) 12.871 (0.2)
Proper motion (declination) [mas/yr] -12.63608435 (0.1) -13.43489966 (0.2) -12.636 (0.1)
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 18.10 (0.01) 18.14 (0.02) 18.10 (0.01)
g magnitude 18.21 (0.007) 18.26 (0.01) 18.21 (0.007)
r magnitude 18.44 (0.008) 18.55 (0.01) 18.44 (0.008)
i magnitude 18.82 (0.01) 18.93 (0.06) 18.82 (0.01)
z magnitude 19.04 (0.05) 19.17 (0.3) 19.04 (0.05)
G magnitude 18.44 (0.01) 18.47 18.44 (0.003)
BP magnitude 18.32 (0.01) 18.25
RP magnitude 18.08 (0.06) 18.12
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
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.