SDSS J090730.32+273628.4

All names: WD 0904+278, WDJ090730.31+273629.07, SDSS J090730.32+273628.4, GALEX J090730.3+273628, Gaia EDR3 692134636881870208, WIRED J090730.32+273628.5, SDSS J090730.33+273628.5, Gaia DR2 692134636881870208, J0907+2736, Gaia DR3 692134636881870208, SDSS J090730.32+273628.5, LP 313-12, USNO-B1.0 1176-00215866

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 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 07 30.37 (0.1) 09 07 30.32 09 07 30.37 (0.2) 09 07 30.37 09 07 30.31 (0.1) 09 07 30.37 09 07 27.91 09 07 30.33
Declination 27 36 26.95 (0.09) 27 36 28.49 27 36 27.01 (0.1) 27 36 26.95 27 36 29.06 (0.09) 27 36 27.01 27 36 53.28 27 36 28.51
Spectral type DA DA DA DA DA DA DA DA DA
Effective temperature [K] 7522.0 (62) 7557.0 (58) 7517.0 (62) 7403.0 7472.0 (134) 7478.0 (42)
log(g) [cgs] 8.03 (0.02) 8.12 (0.03) 8.11 (0.03) 8.08 8.01 (0.04) 8.12 (0.07)
Mass [M] 0.609 (0.02) 0.668 (0.03) 0.661 (0.03) 0.642 0.601 (0.03) 0.663 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 1.5500 1.4620
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] 11.40 (0.2) 12.06 (0.3) 12.06 (0.3) 11.40 11.40 (0.2) 12.06 (0.3)
Distance [pc] 87.74 (1) 82.92 (2) 82.89 (2) 87.74 87.74 (1) 82.89 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] 52.06892683 (0.1) 52.48587352 (0.4) 52.069 (0.1) 52.48587352
Proper motion (declination) [mas/yr] -132.3505102 (0.1) -132.5625891 (0.3) -132.351 (0.1) -132.5625891
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 17.70
V magnitude 17.97
R magnitude 17.90
I magnitude
J magnitude 17.38 (0.03)
H magnitude
K magnitude
u magnitude 18.54 (0.02) 18.51 (0.02) 18.54 (0.02) 18.54 (0.02) 18.50 (0.03)
g magnitude 18.07 (0.006) 18.07 (0.006) 18.07 (0.006) 18.08 (0.01)
r magnitude 17.96 (0.007) 17.97 (0.007) 17.96 (0.007) 17.96 (0.02)
i magnitude 17.96 (0.008) 17.96 (0.008) 17.96 (0.008) 17.95 (0.01)
z magnitude 18.03 (0.02) 18.03 (0.02) 18.03 (0.02) 18.03 (0.02)
G magnitude 17.93 (0.02) 17.95 17.93 17.93 (0.003) 17.95
BP magnitude 18.08 (0.02) 18.05 18.05
RP magnitude 17.62 (0.02) 17.60 17.60
Pan g magnitude 18.08 (0.007) 18.08 (0.009)
Pan r magnitude 17.96 (0.006) 17.96 (0.006)
Pan i magnitude 17.97 (0.003) 17.97 (0.003)
Pan z magnitude 18.03 (0.006) 18.03 (0.005)
Pan y magnitude 18.07 (0.01) 18.07 (0.01)
E(B-V) 0.003

* 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.