WD 2051-208

All names: WD 2051-208, WDJ205442.80-203925.93, TIC 77150475, Gaia DR2 6857295585945072128, BPS CS 22880-0134, BPS CS 22880-13, Gaia EDR3 6857295585945072128, USNO-B1.0 0693-00859053, 2MASS J20544279-2039257, EC 20518-2050

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Gianninas et al. 2011 Koester et al. 2009 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 20 54 42.88 (0.03) 20 54 42.88 (0.05) 20 54 42.80 (0.05) 20 54 42.88 20 54 42.19
Declination -20 39 25.76 (0.02) -20 39 25.77 (0.03) -20 39 25.93 (0.03) -20 39 25.77 -20 39 20.16
Spectral type DAH DA DA DA DA DA2.3 DA
Effective temperature [K] 20362.0 (413) 19903.6 (247) 19083.0 21460.0 (343)
log(g) [cgs] 9.05 (0.02) 9.05 (0.02) 9.01 9.10 (0.05)
Mass [M] 1.222 (0.007) 1.2213909088007666 (0.02) 1.206 1.24 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.6163
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] 31.97 (0.03) 31.97 (0.03) 32.02 (0.05) 32.02 (0.05) 32.02 (0.05)
Distance [pc] 31.28 (0.03) 31.28 (0.03) 31.23 (0.05) 31.00 31.23 (0.05) 31.23 (0.05)
Composition H H
Proper motion (right ascension) [mas/yr] 68.92674827 (0.04) 68.87345102 (0.09) 68.873 (0.09) 68.87345102
Proper motion (declination) [mas/yr] 10.24980763 (0.03) 10.23834361 (0.06) 10.238 (0.06) 10.23834361
Variability
Magnetic yes yes
Bd [MG] 0.255 (0.1) 0.2
Infrared excess (disk)
Binarity
B magnitude 15.00
V magnitude 15.06
R magnitude 15.00
I magnitude
J magnitude 15.59 (0.05)
H magnitude 15.67 (0.1)
K magnitude 15.84 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 15.12 (0.001) 15.14 15.14 (0.0004) 15.14
BP magnitude 15.04 (0.001) 15.00 15.00
RP magnitude 15.30 (0.002) 15.31 15.31
Pan g magnitude 15.01 (0.004)
Pan r magnitude 15.31 (0.002)
Pan i magnitude 15.61 (0.002)
Pan z magnitude 15.88 (0.003)
Pan y magnitude 16.05 (0.006)
E(B-V) 0.001

* 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.