EGGR 393

All names: FBS B 1086, Gaia DR2 1722146680126114560, Gaia DR3 1722146680126114560, LP 8-157, NLTT 39098, G256-18, G 256-18, G256-018, Gaia EDR3 1722146680126114560, WDJ145631.84+815652.71, WD 1459+821, WD 1459+82, FBS 1459+821, uvby98 980256018, EGGR 393, LSPM J1456+8156, 2MASS J14563189+8156524, USNO-B1.0 1719-00041524, TIC 288238767, 1459+821

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Leggett et al. 2018 MWDD HE Gaia DR2 Stilism Bergeron et al. 2011 Zuckerman et al. 2010 Wegner et al. 1987 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 14 56 29.43 (0.03) 14 56 29.51 (0.04) 14 56 29.43 14 56 31.84 (0.03) 14 56 29.51 14 56 38.50
Declination 81 56 55.39 (0.02) 81 56 55.31 (0.03) 81 56 55.39 81 56 52.71 (0.02) 81 56 55.31 81 56 42.00
Spectral type DB3.4 DB DB DB DB DB4 DB4
Effective temperature [K] 14697.0 (1090) 14802.0 15850.0 (395) 15000.0 16000.0 15630.0 (166)
log(g) [cgs] 8.02 (0.08) 7.93 8.09 (0.08) 8.00 (0.01)
Mass [M] 0.603 (0.07) 0.547 0.65 (0.05) 0.592 (0.01)
log(Luminosity) [L] -2.09
Cooling age [Gyr] 0.2200 (0.06) 0.1837 0.2042
log(H/He) <-5.32 (0.2)
log(C/He) <-6.7
log(Ca/He) <-10.7
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] 18.66 (0.02) 20.08 (0.7) 18.65 (0.03) 18.66 18.66 (0.02) 18.65 (0.03)
Distance [pc] 53.58 (0.07) 49.80 (2) 53.61 (0.09) 49.00 53.58 53.58 (0.07) 53.61 (0.09)
Composition He He
Proper motion (right ascension) [mas/yr] -316.1022145 (0.03) -316.2247353 (0.08) -316.102 (0.03) -316.2247353
Proper motion (declination) [mas/yr] 167.6524854 (0.03) 167.4651193 (0.06) 167.652 (0.03) 167.4651193
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.00
V magnitude 14.78
R magnitude 14.80
I magnitude
J magnitude 15.15 (0.06)
H magnitude 15.35 (0.1)
K magnitude 15.24 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.81 (0.001) 14.83 14.81 14.81 (0.003) 14.83
BP magnitude 14.75 (0.001) 14.71 14.71
RP magnitude 14.91 (0.003) 14.91 14.91
Pan g magnitude 14.73 (0.0009)
Pan r magnitude 15.00 (0.001)
Pan i magnitude 15.25 (0.0003)
Pan z magnitude 15.45 (0.007)
Pan y magnitude 15.64 (0.009)
E(B-V) 0.005

* 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.