SDSS J090321.70+213951.8

All names: LSPM J0903+2139, Gaia DR3 685402357248747648, Gaia DR2 685402357248747648, WDJ090321.76+213952.39, Gaia EDR3 685402357248747648, SDSS J090321.70+213951.9, J0903+2139, GALEX J090321.6+213952, SDSS J090321.71+213951.9, USNO-B1.0 1116-00183883, SDSS J090321.70+213951.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 03 21.58 (0.2) 09 03 21.70 09 03 21.58 (0.2) 09 03 21.58 09 03 21.76 (0.2) 09 03 21.58 09 03 21.71
Declination 21 39 51.02 (0.1) 21 39 51.91 21 39 51.07 (0.2) 21 39 51.02 21 39 52.40 (0.1) 21 39 51.07 21 39 51.91
Spectral type DA DA DA DA DA DA DA DA
Effective temperature [K] 7840.0 (54) 7805.0 (52) 7839.0 (54) 7803.0 8256.0 (243) 7736.0 (55)
log(g) [cgs] 8.44 (0.02) 8.43 (0.02) 8.44 (0.02) 8.44 8.55 (0.05) 8.31 (0.08)
Mass [M☉] 0.875 (0.02) 0.872 (0.02) 0.876 (0.02) 0.874 0.951 (0.04) 0.781 (0.05)
log(Luminosity) [L☉]
Cooling age [Gyr] 2.8100 2.6780
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] 11.65 (0.2) 11.67 (0.3) 11.67 (0.3) 11.65 11.64 (0.2) 11.67 (0.3)
Distance [pc] 85.87 (1) 85.69 (2) 85.72 (2) 85.87 85.87 (1) 85.72 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] -157.3935147 (0.2) -158.2589679 (0.4) -157.394 (0.2) -158.2589679
Proper motion (declination) [mas/yr] -85.74117004 (0.2) -85.15883334 (0.4) -85.741 (0.2) -85.15883334
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude 18.00
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.91 (0.02) 18.91 (0.02) 18.91 (0.02) 18.96 (0.02) 18.95 (0.02)
g magnitude 18.48 (0.007) 18.48 (0.007) 18.49 (0.007) 18.50 (0.03)
r magnitude 18.42 (0.008) 18.42 (0.008) 18.41 (0.008) 18.41 (0.02)
i magnitude 18.45 (0.01) 18.45 (0.01) 18.40 (0.01) 18.39 (0.02)
z magnitude 18.51 (0.03) 18.51 (0.03) 18.48 (0.03) 18.46 (0.04)
G magnitude 18.37 (0.02) 18.40 18.37 18.37 (0.003) 18.40
BP magnitude 18.49 (0.02) 18.46 18.46
RP magnitude 18.17 (0.02) 18.08 18.08
Pan g magnitude 18.49 (0.004) 18.49 (0.004)
Pan r magnitude 18.40 (0.009) 18.40 (0.008)
Pan i magnitude 18.44 (0.004) 18.44 (0.004)
Pan z magnitude 18.54 (0.007) 18.54 (0.007)
Pan y magnitude 18.52 (0.03) 18.52 (0.03)
E(B-V) 0.004

* 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.