SDSS J085501.90+023129.7

All names: SDSS J085501.90+023129.7, GALEX J085501.9+023129, Gaia DR2 577824078002797056, WD 0852+027, Gaia EDR3 577824078002797056, Gaia DR3 577824078002797056

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 55 01.92 (0.4) 08 55 01.90 08 55 01.92 (0.9) 08 55 01.90 (0.4) 08 55 01.90 08 55 01.97 08 55 01.90
Declination 02 31 29.36 (0.2) 02 31 29.73 02 31 29.37 (0.6) 02 31 29.69 (0.2) 02 31 29.72 02 31 24.96 02 31 29.69
Spectral type DA DA DA_auto DA DA DA
Effective temperature [K] 8845.0 8777.0 (154) 8733.0 (169)
log(g) [cgs] 7.95 8.33 (0.3) 8.09 (0.3)
Mass [M☉] 0.568
log(Luminosity) [L☉]
Cooling age [Gyr] 0.7721
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] 3.01 (0.5) 3.11 (0.7) 3.01 (0.5)
Distance [pc] 332.46 (54) 321.03 (70) 332.46 (54)
Composition H
Proper motion (right ascension) [mas/yr] 20.86242682 (0.7) 21.05423529 (2) 20.862 (0.7) 23.3
Proper motion (declination) [mas/yr] -20.64799595 (0.5) -19.82120534 (0.9) -20.648 (0.5) -34.6
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.45 (0.06) 20.45 (0.06) 20.48 (0.07) 20.47 20.46 (0.07)
g magnitude 20.14 (0.02) 20.14 (0.02) 20.12 (0.03) 20.12 20.12 (0.03)
r magnitude 20.09 (0.02) 20.09 (0.02) 20.15 (0.03) 20.14 20.13 (0.03)
i magnitude 20.25 (0.04) 20.25 (0.04) 20.27 (0.04) 20.27 20.27 (0.04)
z magnitude 20.33 (0.1) 20.32 (0.1) 20.32 (0.1) 20.32 20.31 (0.1)
G magnitude 20.05 (0.05) 20.12 20.05 (0.005)
BP magnitude 20.25 (0.05) 20.25
RP magnitude 19.87 (0.06) 19.94
Pan g magnitude 20.10 (0.01)
Pan r magnitude 20.13 (0.01)
Pan i magnitude 20.18 (0.02)
Pan z magnitude 20.32 (0.03)
Pan y magnitude 20.52 (0.2)
E(B-V) 0.028

* 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.