Gaia DR2 4403335028894782464

All names: Gaia DR2 4403335028894782464, WDJ154953.97-014916.05, WDJ154953.97-014916.04, Gaia DR3 4403335028894782464, SDSS J154953.96-014916.2, Gaia EDR3 4403335028894782464, J1549-0149

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Kilic et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 15 49 53.90 (0.1) 15 49 53.90 15 49 53.90 15 49 53.97 (0.1) 15 49 53.90
Declination -01 49 17.62 (0.1) -01 49 17.57 -01 49 17.62 -01 49 16.06 (0.1) -01 49 17.57
Spectral type DC DC DC DC: DC
Effective temperature [K] 6693.0 (32) 6616.0 (31) 6694.0 (32) 7123.0 6858.0 6520.0 (187)
log(g) [cgs] 8.01 (0.02) 7.98 (0.03) 8.01 (0.03) 8.24 8.13 8.02 (0.05)
Mass [M] 0.582 (0.02) 0.56 (0.02) 0.58 (0.02) 0.741 0.655 0.582 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 1.8200 2.2430 2.1140
log(H/He) -3.2 -3.2 -3.2
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] 11.27 (0.2) 11.24 (0.2) 11.24 (0.2) 11.27 11.27 (0.2) 11.24 (0.2)
Distance [pc] 88.75 (1) 88.97 (2) 88.99 (2) 88.75 88.75 (1) 88.99 (2)
Composition He
Proper motion (right ascension) [mas/yr] -71.80463597 (0.2) -71.7274224 (0.5) -71.805 (0.2) -71.7274224
Proper motion (declination) [mas/yr] -97.68336538 (0.1) -98.27560861 (0.4) -97.683 (0.1) -98.27560861
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 17.81 (0.05)
H magnitude 17.65 (0.07)
K magnitude 18.02 (0.2)
u magnitude 19.17 (0.02) 19.16 (0.02) 19.16 (0.02)
g magnitude 18.66 (0.008) 18.66 (0.008)
r magnitude 18.45 (0.008) 18.45 (0.008)
i magnitude 18.43 (0.01) 18.43 (0.01)
z magnitude 18.52 (0.03) 18.52 (0.03)
G magnitude 18.45 (0.01) 18.48 18.45 18.45 (0.003) 18.48
BP magnitude 18.64 (0.01) 18.61 18.61
RP magnitude 18.16 (0.02) 18.11 18.11
Pan g magnitude 18.63 (0.003) 18.63 (0.003)
Pan r magnitude 18.48 (0.004) 18.48 (0.005)
Pan i magnitude 18.47 (0.005) 18.47 (0.004)
Pan z magnitude 18.49 (0.009) 18.49 (0.007)
Pan y magnitude 18.56 (0.02) 18.56 (0.02)
E(B-V) 0.009

* 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.