SDSS J092116.04+372943.5

All names: SDSS J092116.04+372943.38, SDSS J092116.04+372943.3, Gaia EDR3 810998642776843520, SDSS J092116.04+372943.4, Gaia DR3 810998642776843520, SDSS J092116.04+372943.5, Gaia DR2 810998642776843520, GALEX J092116.0+372943

Parameter Unit Gaia EDR3 Pan-STARRS DR1 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 09 21 16.04 (0.2) 09 21 16.04 09 21 16.04 (0.3) 09 21 16.04 (0.2)
Declination 37 29 43.31 (0.2) 37 29 43.51 37 29 43.32 (0.3) 37 29 43.58 (0.2)
Spectral type DBA DBA DBA DB
Effective temperature [K] 12797.0 12326.0 11663.0 11579.0 (132) 11792.0 (119)
log(g) [cgs] 8.36 7.76 7.68 8.00 (0) 8.00 (0)
Mass [M] 0.816 0.458 0.417
log(Luminosity) [L]
Cooling age [Gyr] 0.2774
log(H/He) -5.082 -5.06 (0.3)
log(C/He)
log(Ca/He) <-10.1
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] 3.22 (0.3) 3.02 (0.5) 3.22 (0.3)
Distance [pc] 310.88 (29) 331.64 (51) 263.00 310.88 (29)
Composition He
Proper motion (right ascension) [mas/yr] -5.645288118 (0.3) -7.060478844 (0.6) -5.645 (0.3)
Proper motion (declination) [mas/yr] -16.69485873 (0.3) -15.88432943 (0.6) -16.695 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.97 (0.02) 18.97 (0.02) 18.97 (0.02)
g magnitude 18.96 (0.01) 18.96 (0.01) 18.96 (0.01)
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 19.41 (0.09) 19.41 (0.09) 19.41 (0.09)
G magnitude 19.02 (0.03) 19.07 19.02 (0.004)
BP magnitude 19.08 (0.03) 18.98
RP magnitude 19.15 (0.05) 19.07
Pan g magnitude 18.98 (0.008)
Pan r magnitude 19.15 (0.009)
Pan i magnitude 19.36 (0.009)
Pan z magnitude 19.52 (0.01)
Pan y magnitude 19.59 (0.06)
E(B-V) 0.017

* 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.