SDSS J155501.59+445736.4

All names: SDSS J155501.58+445736.4, Gaia DR2 1396910212916961920, Gaia EDR3 1396910212916961920, Gaia DR3 1396910212916961920, SDSS J155501.59+445736.4, SDSS J155501.59+445736.43

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Simbad Vincent et al. 2023
Right ascension 15 55 01.56 (0.5) 15 55 01.59 15 55 01.56 (0.6) 15 55 01.59 (0.5)
Declination 44 57 36.50 (0.5) 44 57 36.41 44 57 36.50 (0.5) 44 57 36.38 (0.5)
Spectral type DA: DA: DA DA
Effective temperature [K] 7921.0 7456.0 (175)
log(g) [cgs] 7.62 6.98 (0.4)
Mass [M] 0.397 0.236 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.7089
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] 2.74 (0.5) 2.62 (0.6) 2.74 (0.5)
Distance [pc] 364.41 (69) 381.83 (92) 364.40 (69)
Composition H
Proper motion (right ascension) [mas/yr] -20.19658921 (0.8) -20.46090317 (1) -20.197 (0.8)
Proper motion (declination) [mas/yr] 7.692136225 (0.7) 5.195922922 (1) 7.692 (0.7)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.95 (0.08) 20.98 (0.08) 20.95 (0.08)
g magnitude 20.44 (0.02) 20.47 (0.03) 20.44 (0.02)
r magnitude 20.37 (0.03) 20.40 (0.03) 20.37 (0.03)
i magnitude 20.43 (0.04) 20.45 (0.04) 20.43 (0.04)
z magnitude 20.40 (0.1) 20.39 (0.1) 20.40 (0.1)
G magnitude 20.35 (0.09) 20.44 20.35 (0.007)
BP magnitude 20.69 (0.09) 20.43
RP magnitude 20.22 (0.1) 19.93
Pan g magnitude 20.50 (0.02)
Pan r magnitude 20.37 (0.03)
Pan i magnitude 20.48 (0.01)
Pan z magnitude 20.56 (0.04)
Pan y magnitude 20.38 (0.2)
E(B-V) 0.019

* 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.