US 1055

All names: SDSS J095229.04+455130.5, SDSS J095229.04+455130.8, Gaia DR2 820736020831182720, Gaia EDR3 820736020831182720, SDSS J095229.03+455130.6, GALEX J095229.0+455130, US 1055, SDSS J095229.04+455130.80, USNO-A2.0 1350-07671961, Gaia DR3 820736020831182720

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 09 52 29.04 (0.2) 09 52 29.04 09 52 29.04 (0.3) 09 52 29.03 (0.2) 09 52 29.04
Declination 45 51 30.46 (0.2) 45 51 30.70 45 51 30.47 (0.3) 45 51 30.74 (0.2) 45 51 30.76
Spectral type DB DB DB DB
Effective temperature [K] 17670.0 18057.0 15947.0 18182.0 (335)
log(g) [cgs] 7.93 7.66 7.53 8.05 (0.1)
Mass [M] 0.554 0.425 0.365 0.619 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.0873
log(H/He) <-5.611
log(C/He)
log(Ca/He)
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] 1.88 (0.3) 1.58 (0.5) 1.88 (0.3)
Distance [pc] 532.12 (87) 632.17 (209) 532.11 (87)
Composition He
Proper motion (right ascension) [mas/yr] 0.851872228 (0.3) 2.011064585 (0.7) 0.852 (0.3)
Proper motion (declination) [mas/yr] -17.17623346 (0.3) -19.3561138 (1) -17.176 (0.3)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.60
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.17 (0.02) 19.17 (0.02) 19.17 (0.03)
g magnitude 19.25 (0.01) 19.25 (0.01) 19.26 (0.02)
r magnitude 19.57 (0.01) 19.57 (0.01) 19.58 (0.02)
i magnitude 19.87 (0.02) 19.87 (0.02) 19.87 (0.03)
z magnitude 19.87 (0.08) 19.87 (0.08) 19.86 (0.07)
G magnitude 19.43 (0.03) 19.46 19.43 (0.004)
BP magnitude 19.40 (0.03) 19.30
RP magnitude 19.50 (0.04) 19.55
Pan g magnitude 19.35 (0.01)
Pan r magnitude 19.58 (0.01)
Pan i magnitude 19.87 (0.007)
Pan z magnitude 20.14 (0.02)
Pan y magnitude 19.83 (0.2)
E(B-V) 0.020

* 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.