WD 1254+016

All names: SDSS J125710.50+012422.9, Gaia DR2 3690568537350703744, WD 1254+016, EQ J1257+0124, SDSS J125710.50+012422.8, GALEX J125710.5+012423, 1254+016, Gaia DR3 3690568537350703744, Gaia EDR3 3690568537350703744

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Romero et al. 2013 Tremblay et al. 2011 Castanheira et al. 2006 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 12 57 10.44 (0.2) 12 57 10.50 12 57 10.45 (0.3) 12 57 10.44 12 57 10.50 (0.2) 12 57 10.50 12 57 09.34 12 57 10.50 12 57 10.50
Declination 01 24 23.44 (0.1) 01 24 22.96 01 24 23.43 (0.2) 01 24 23.44 01 24 22.97 (0.1) 01 24 22.98 01 24 17.28 01 24 22.89 01 24 22.90
Spectral type DA DA DA DA DA DA4.4 DA DA
Effective temperature [K] 10749.0 11490.0 11820.0 (250) 11490.0 12446.0 (711) 11523.0 (158) 11465.0 (156) 11554.0 (164)
log(g) [cgs] 7.92 8.30 8.41 (0.09) 8.30 8.18 (0.07) 8.34 (0.09) 8.37 (0.08) 8.36 (0.09)
Mass [M] 0.559 0.87 (0.06) 0.717 (0.06) 0.825 (0.05)
log(Luminosity) [L]
Cooling age [Gyr] 0.4539 0.7762
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] 4.38 (0.3) 4.32 (0.3) 4.38 4.38 (0.3)
Distance [pc] 228.41 (13) 231.63 (17) 228.41 228.40 (13)
Composition H H
Proper motion (right ascension) [mas/yr] -56.63236789 (0.3) -55.95211419 (0.7) -56.632 (0.3) -58.4 -56.0
Proper motion (declination) [mas/yr] 29.2967465 (0.4) 29.37658509 (0.5) 29.297 (0.4) 32.3 34.0
Variability VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.38
V magnitude 18.70 18.70 18.69
R magnitude
I magnitude
J magnitude
H magnitude 18.90 (0.2)
K magnitude
u magnitude 19.09 (0.02) 19.09 (0.02) 19.10 (0.03) 19.10 19.09 (0.03) 19.10 (0.03)
g magnitude 18.64 (0.008) 18.64 (0.008) 18.65 (0.03) 18.65 18.65 (0.03) 18.65 (0.03)
r magnitude 18.72 (0.01) 18.72 (0.01) 18.75 (0.02) 18.75 18.75 (0.02) 18.75 (0.02)
i magnitude 18.92 (0.02) 18.92 (0.01) 18.95 (0.02) 18.95 18.95 (0.02) 18.95 (0.02)
z magnitude 19.08 (0.06) 19.08 (0.06) 19.07 (0.06) 19.10 19.08 (0.06) 19.10 (0.06)
G magnitude 18.67 (0.02) 18.69 18.67 18.67 (0.004)
BP magnitude 18.70 (0.02) 18.68
RP magnitude 18.78 (0.03) 18.62
Pan g magnitude 18.62 (0.01)
Pan r magnitude 18.75 (0.01)
Pan i magnitude 18.96 (0.01)
Pan z magnitude 19.16 (0.02)
Pan y magnitude 19.19 (0.02)
E(B-V) 0.019
Period #1 [s] 377.8 905.8
Amplitude #1 [mma] 6.6 46.7
Period #2 [s] 398.1
Amplitude #2 [mma] 6.7
Period #3 [s] 466.3
Amplitude #3 [mma] 8.9
Period #4 [s] 507.1
Amplitude #4 [mma] 8.4
Period #5 [s] 644.5
Amplitude #5 [mma] 21.9
Period #6 [s] 786.9
Amplitude #6 [mma] 8.9
Period #7 [s] 946.3
Amplitude #7 [mma] 10.5
Period #8 [s] 1070.5
Amplitude #8 [mma] 7.9

* 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.