SDSS J090204.62+260814.3

All names: SDSS J090204.62+260814.3, GALEX J090204.5+260814, WD 0859+263, Gaia DR3 691566498608187008, Gaia EDR3 691566498608187008, Gaia DR2 691566498608187008, [HHD2009] SDSS J0902+2608, SDSS J090204.62+260814.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism sdss-wdms.org (29/04/2016) Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 02 04.61 (0.3) 09 02 04.62 09 02 04.61 (0.5) 09 02 04.62 09 02 04.62 (0.3) 09 02 03.96 09 02 04.62
Declination 26 08 14.12 (0.2) 26 08 14.33 26 08 14.13 (0.2) 26 08 14.32 26 08 14.40 (0.2) 26 08 09.60 26 08 14.34
Spectral type DA+M DA+M DA+M DA2.0 DA+M DA+MS
Effective temperature [K] 10882.0 28389.0 (945) 23431.0 (501)
log(g) [cgs] 7.52 8.01 (0.2) 7.55 (0.1)
Mass [M] 0.368 0.65 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2839
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] 1.86 (0.4) 2.76 (0.7) 1.86 (0.4)
Distance [pc] 536.63 (119) 362.85 (86) 876.00 (224) 536.62 (119)
Composition H
Proper motion (right ascension) [mas/yr] -10.05541828 (0.4) -9.466752483 (0.7) -10.055 (0.4)
Proper motion (declination) [mas/yr] -17.57919033 (0.2) -19.78619784 (0.4) -17.579 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS yes WDMS WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.73 (0.02) 18.71 18.73 (0.02) 18.71 18.73 (0.02)
g magnitude 18.85 (0.009) 18.87 18.85 (0.009) 18.87 18.88 (0.02)
r magnitude 19.21 (0.01) 19.22 19.20 (0.01) 19.22 19.22 (0.02)
i magnitude 19.22 (0.01) 19.21 19.22 (0.01) 19.21 19.22 (0.02)
z magnitude 19.02 (0.04) 19.02 19.02 (0.04) 19.02 19.03 (0.04)
G magnitude 19.01 (0.02) 19.03 19.01 (0.004)
BP magnitude 19.03 (0.02) 18.91
RP magnitude 18.87 (0.03) 18.80
Pan g magnitude 18.93 (0.008)
Pan r magnitude 19.26 (0.007)
Pan i magnitude 19.26 (0.009)
Pan z magnitude 19.06 (0.01)
Pan y magnitude 18.94 (0.03)
E(B-V) 0.029

* 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.