GD 392

All names: WDJ210021.51+342621.00, GD392, KPD 2058+3414, GD 392A, USNO-B1.0 1244-00451072, WDS J21004+3426A, 2058+342A, GALEX J210021.6+342622, WD 2058+342, EGGR 398, ** FAR 1A, Gaia EDR3 1866605263732785792, Gaia DR2 1866605263732785792, GD 392, WD 2058+342A, LSPM J2100+3426W, TIC 428404202, Gaia DR3 1866605263732785792, 2MASS J21002150+3426209

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Leggett et al. 2018 MWDD HE Gaia DR2 Stilism Holberg et al. 2016 Sion et al. 2014 Bergeron et al. 2011 Zuckerman et al. 2010 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 21 00 21.68 (0.02) 21 00 21.67 (0.03) 21 00 21.36 21 00 21.68 21 00 21.51 (0.02) 21 00 21.67 21 00 21.41
Declination 34 26 22.74 (0.02) 34 26 22.69 (0.03) 34 26 20.40 34 26 22.74 34 26 21.00 (0.02) 34 26 22.69 34 26 16.44
Spectral type DBA4.6 DB DB DB4.1 DB DB DB DB5 DB5
Effective temperature [K] 11064.0 (490) 11056.0 12220.0 (423) 12220.0 (423) 11900.0 11185.0 (63)
log(g) [cgs] 8.10 (0.05) 8.06 9.09 (0.02) 9.09 (0.2) 8.07 (0.007)
Mass [M] 0.642 (0.04) 0.617 1.23 (0.01) 1.23 (0.08) 0.627 (0.006)
log(Luminosity) [L] -3.26
Cooling age [Gyr] 0.5520 (0.08) 0.5202 1.7000 1.6596
log(H/He) <-5.54 (3)
log(C/He)
log(Ca/He) <-11.8
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] 19.11 (0.03) 19.56 (0.3) 19.05 (0.04) 19.11 19.11 (0.03) 19.05 (0.04)
Distance [pc] 52.33 (0.08) 51.12 (0.8) 52.51 (0.1) 25.65 (0.4) 24.00 52.33 52.33 (0.08) 52.51 (0.1)
Composition He He He
Proper motion (right ascension) [mas/yr] 128.4718995 (0.03) 128.3833864 (0.06) 128.472 (0.03) 128.3833864
Proper motion (declination) [mas/yr] 109.2572286 (0.03) 109.2445224 (0.07) 109.257 (0.03) 109.2445224
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity DDu
B magnitude 15.73
V magnitude 15.70 15.68
R magnitude 15.60
I magnitude
J magnitude 15.74 (0.07)
H magnitude 15.85 (0.2)
K magnitude 15.57 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.65 (0.002) 15.67 15.65 15.65 (0.003) 15.67
BP magnitude 15.65 (0.002) 15.64 15.64
RP magnitude 15.63 (0.002) 15.63 15.63
Pan g magnitude 15.65 (0.003)
Pan r magnitude 15.79 (0.002)
Pan i magnitude 15.96 (0.0009)
Pan z magnitude 16.15 (0.003)
Pan y magnitude 16.26 (0.009)
E(B-V) 0.004

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.