SDSS J015554.58+013509.7

All names: Gaia EDR3 2511020022215011072, Gaia DR2 2511020022215011072, Gaia DR3 2511020022215011072, SDSS J015554.58+013509.76, SDSS J015554.58+013509.7, J0155+0135, WDJ015554.57+013509.93

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 Kilic et al. 2025 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Stilism Kepler et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Vincent et al. 2023
Right ascension 01 55 54.58 (0.2) 01 55 54.58 01 55 54.58 (0.2) 01 55 54.58 01 55 54.57 (0.2) 01 55 54.58
Declination 01 35 09.64 (0.1) 01 35 09.75 01 35 09.65 (0.2) 01 35 09.64 01 35 09.93 (0.1) 01 35 09.65
Spectral type DC DC: DC: DC: DC: DC DC DC
Effective temperature [K] 7044.0 (64) 7023.0 (59) 7459.0 7181.0 9912.0 (1000) 7116.0 (223)
log(g) [cgs] 8.19 (0.02) 8.18 (0.02) 8.40 8.30 6.50 (0.5) 8.27 (0.05)
Mass [M☉] 0.693 (0.02) 0.69 (0.02) 0.848 0.769 0.749 (0.04)
log(Luminosity) [L☉]
Cooling age [Gyr] 2.2100 2.8500 2.6790
log(H/He) -3.4 -3.4
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] 11.78 (0.2) 11.85 (0.2) 11.85 (0.2) 11.78 11.78 (0.2) 11.85 (0.2)
Distance [pc] 84.88 (1) 84.39 (2) 84.37 (2) 84.88 84.88 (1) 84.37 (2)
Composition He
Proper motion (right ascension) [mas/yr] 8.49660452 (0.2) 7.915190491 (0.5) 8.497 (0.2) 7.915190491
Proper motion (declination) [mas/yr] -18.1179752 (0.2) -18.26381497 (0.4) -18.118 (0.2) -18.26381497
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.88 (0.04)
H magnitude 17.75 (0.06)
K magnitude 17.88 (0.1)
u magnitude 19.01 (0.02) 19.00 (0.02) 19.01 (0.02) 19.01 (0.02) 19.01 (0.02)
g magnitude 18.53 (0.008) 18.53 (0.01) 18.53 (0.008) 18.53 (0.008)
r magnitude 18.49 (0.008) 18.49 (0.01) 18.49 (0.008) 18.49 (0.008)
i magnitude 18.53 (0.01) 18.53 (0.01) 18.53 (0.01) 18.53 (0.01)
z magnitude 18.47 (0.03) 18.47 (0.03) 18.47 (0.03) 18.47 (0.03)
G magnitude 18.43 (0.03) 18.45 18.43 18.43 (0.003) 18.45
BP magnitude 18.55 (0.03) 18.54 18.54
RP magnitude 18.18 (0.01) 18.19 18.19
Pan g magnitude 18.53 (0.009) 18.53 (0.008)
Pan r magnitude 18.50 (0.009) 18.50 (0.009)
Pan i magnitude 18.52 (0.003) 18.52 (0.004)
Pan z magnitude 18.51 (0.01) 18.51 (0.01)
Pan y magnitude 18.53 (0.02) 18.53 (0.02)
E(B-V) 0.006

* 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.