GD 198

All names: WD 1612-111, Gaia DR3 4342506850188840192, GD 198, GALEX J161524.0-111830, Gaia DR2 4342506850188840192, GSC 05621-01008, WDJ161523.98-111830.09, GEN# +6.10060198, Gaia EDR3 4342506850188840192, 2MASS J16152396-1118300, uvby98 610060198, FB 61, TIC 135654503, EGGR 194, WD 1612-11

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Gaia DR2 Stilism Bergeron et al. 2011 Voss et al. 2007 Beauchamp et al. 1999 Wegner et al. 1987 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 15 24.01 (0.04) 16 15 24.01 (0.07) 16 15 24.01 16 15 23.98 (0.04) 16 15 24.01 16 15 23.66
Declination -11 18 31.64 (0.03) -11 18 31.59 (0.04) -11 18 31.64 -11 18 30.09 (0.03) -11 18 31.59 -11 18 33.12
Spectral type DB DB DB DB DB3
Effective temperature [K] 23420.0 (1781) 22143.0 21900.0 13500.0 19928.0 (381)
log(g) [cgs] 7.96 (0.06) 8.07 7.91 7.97 (0.01)
Mass [M] 0.59 (0.04) 0.645 0.583 (0.01)
log(Luminosity) [L] -1.32
Cooling age [Gyr] 0.0339
log(H/He) <-4.75 (2) <-5
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] 10.80 (0.05) 10.72 (0.07) 10.80 10.80 (0.05) 10.72 (0.07)
Distance [pc] 92.59 (0.4) 93.31 (0.6) 104.00 92.59 92.59 (0.4) 93.31 (0.6)
Composition He He
Proper motion (right ascension) [mas/yr] 34.43034394 (0.06) 34.46952483 (0.2) 34.43 (0.06) 34.46952483
Proper motion (declination) [mas/yr] -96.87905819 (0.04) -96.75329182 (0.1) -96.879 (0.04) -96.75329182
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.42
V magnitude 15.53 15.53 15.53
R magnitude
I magnitude
J magnitude 15.90 (0.07)
H magnitude 15.94 (0.1)
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.46 (0.002) 15.48 15.46 15.46 (0.003) 15.48
BP magnitude 15.37 (0.002) 15.34 15.34
RP magnitude 15.62 (0.003) 15.62 15.62
Pan g magnitude 15.34 (0.002)
Pan r magnitude 15.66 (0.006)
Pan i magnitude 15.96 (0.002)
Pan z magnitude 16.20 (0.003)
Pan y magnitude 16.37 (0.005)
E(B-V) 0.015

* 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.