PB 5894

All names: SDSS J002153.33+083141.82, PB 5894, SDSS J002153.33+083141.8, Gaia DR2 2749312607457587840, GALEX J002153.3+083141, SDSS J002153.32+083141.9, SDSS J002153.32+083141.8, Gaia DR3 2749312607457587840, Gaia EDR3 2749312607457587840

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Bedard et al. 2020 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 00 21 53.33 (0.2) 00 21 53.33 00 21 53.33 (0.3) 00 21 53.32 (0.2)
Declination 08 31 41.85 (0.2) 08 31 41.90 08 31 41.85 (0.2) 08 31 41.91 (0.2)
Spectral type DBA DB DB DB DB
Effective temperature [K] 30854.0 (2262) 17789.0 27313.0 15853.0 16780.0 (123) 16720.0 (11)
log(g) [cgs] 7.94 (0.1) 8.35 7.76 7.35 7.97 (0.08) 7.90 (0.007)
Mass [M] 0.58 (0.06) 0.812 0.492 0.308 0.649 (0.04)
log(Luminosity) [L] -0.82 (0.1)
Cooling age [Gyr] 0.0089 (0.002) 0.0816
log(H/He) <-5.733 <-4.9
log(C/He)
log(Ca/He) <-6.16
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] 1.86 (0.3) 1.79 (0.4) 1.86 (0.3)
Distance [pc] 537.10 (74) 557.22 (111) 353.00 537.09 (74)
Composition He He
Proper motion (right ascension) [mas/yr] 13.44013773 (0.3) 13.45491143 (0.7) 13.44 (0.3)
Proper motion (declination) [mas/yr] -4.040718966 (0.2) -4.264508734 (0.5) -4.041 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude 19.30 (0.2)
K magnitude
u magnitude 18.69 (0.02) 18.69 (0.02) 18.69 (0.02)
g magnitude 18.78 (0.008) 18.78 (0.01) 18.78 (0.008)
r magnitude 19.14 (0.01) 19.14 (0.01) 19.14 (0.01)
i magnitude 19.36 (0.02) 19.36 (0.02) 19.36 (0.02)
z magnitude 19.58 (0.06) 19.58 (0.06) 19.58 (0.06)
G magnitude 18.94 (0.03) 18.99 18.94 (0.004)
BP magnitude 18.92 (0.03) 18.80
RP magnitude 19.09 (0.05) 19.07
Pan g magnitude 18.82 (0.01)
Pan r magnitude 19.09 (0.01)
Pan i magnitude 19.38 (0.01)
Pan z magnitude 19.62 (0.0006)
Pan y magnitude 19.42 (0.09)
E(B-V) 0.031

* 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.