GD 1248

All names: GD 1248, Gaia DR2 2390888829168611968, WD 2347-192, WD2347-192, Gaia EDR3 2390888829168611968, MCT 2347-1916, Gaia DR3 2390888829168611968, EC 23474-1916, USNO-B1.0 0710-00849400

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Bergeron et al. 2021 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Koester et al. 2001 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 23 50 02.88 (0.07) 23 50 02.88 (0.09) 23 50 03.00 23 50 02.88 23 50 02.93 (0.07) 23 50 02.90
Declination -18 59 22.34 (0.06) -18 59 22.33 (0.2) -18 59 22.00 -18 59 22.34 -18 59 22.16 (0.06) -18 59 18.96
Spectral type DA DA DA DA DA DA1.8 DA2
Effective temperature [K] 27603.0 (599) 23342.0 27370.0 (458) 26272.0 (49) 26676.0 (80) 28961.0 (805)
log(g) [cgs] 7.86 (0.09) 7.71 7.99 (0.06) 7.94 (0.007) 7.82 (0.01) 8.11 (0.03)
Mass [M] 0.569 (0.04) 0.489 0.64 (0.03) 0.55 0.703 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.0116 0.0213
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 6.63 (0.08) 6.09 (0.2) 6.63 6.63 (0.08)
Distance [pc] 150.84 (2) 150.00 164.22 (5) 111.00 150.84 150.84 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] -52.14097441 (0.08) -51.74352449 (0.3) -52.141 (0.08)
Proper motion (declination) [mas/yr] -11.39850363 (0.07) -10.45432708 (0.5) -11.399 (0.07)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.00
V magnitude 16.03 16.03
R magnitude 16.20
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.12 (0.003) 16.14 16.12 16.12 (0.003)
BP magnitude 15.99 (0.003) 15.94
RP magnitude 16.37 (0.005) 16.35
Pan g magnitude 15.97 (0.01)
Pan r magnitude 16.35 (0.002)
Pan i magnitude 16.69 (0.003)
Pan z magnitude 16.98 (0.005)
Pan y magnitude 17.14 (0.006)
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.