LAWD 86

All names: LTT 18524, UBV 18527, WISEA J212657.84+733840.9, SDSS J212657.71+733843.3, GJ 9743, TIC 323139945, GEN# +9.80261043, LSPM J2126+7338, WD 2126+73, uvby98 980261043, WD 2126+734, WDJ212657.66+733844.66, Gaia EDR3 2274076297221555968, CNS5 5281, G261-43A, G 261-43, CSI+73-21267, KUV 21267+7326, Gaia DR3 2274076297221555968, EGGR 144, Gaia DR2 2274076297221555968, UCAC3 328-58274, ASCC 58117, G 263-3, UBV M 42798, PLX 5188.01, WDS J21270+7339A, LAWD 86, GSC 04473-00342, PM J21269+7338, GJ 828.5, AC +73 8031, NLTT 51355, 2MASS J21265770+7338444, GCRV 72233, USNO 267, AC +73 8031-0, ** ZUC 15A, USNO-B1.0 1636-00114312, G261-43, J2126+7338, 21269+7338

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Kilic et al. 2020 McCleery et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Holberg et al. 2016 Limoges et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 21 26 57.87 (0.02) 21 26 57.86 (0.03) 21 26 57.86 (0.03) 21 26 57.60 21 26 57.87 21 26 57.66 (0.02) 21 26 57.86 21 26 55.68
Declination 73 38 39.64 (0.02) 73 38 39.80 (0.03) 73 38 39.80 (0.03) 73 38 42.00 73 38 39.64 73 38 44.67 (0.02) 73 38 39.80 73 38 54.24
Spectral type DA DA DA DA DA DA DA DA DA3.8 DA DA DA DA3.1 DA4
Effective temperature [K] 15554.0 (270) 15127.0 (281) 15553.0 (270) 15039.6 (257) 13873.0 16040.0 (236) 16104.0 (237) 15950.0 (234) 16104.0 16104.0 (237) 16110.0 (236) 15993.0 (132)
log(g) [cgs] 7.94 (0.01) 7.89 (0.02) 7.95 (0.01) 7.89 (0.02) 7.82 7.99 (0.04) 7.97 (0.04) 7.97 (0.04) 7.97 (0.04) 7.97 (0.04) 7.96 (0.007)
Mass [M] 0.582 (0.01) 0.552 (0.01) 0.583 (0.01) 0.511 0.58 (0.08) 0.6 (0.02) 0.6 (0.03) 0.6 (0.03) 0.6 (0.03) 0.594 (0.005)
log(Luminosity) [L] -1.99 -1.97
Cooling age [Gyr] 0.1910 0.1500 0.1500
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] 44.99 (0.03) 44.99 (0.03) 45.04 (0.04) 45.04 (0.04) 47.10 (2) 47.10 (2) 47.10 (2) 44.99 44.99 (0.03) 45.04 (0.04) 43.00 (7)
Distance [pc] 22.23 (0.01) 22.23 (0.01) 22.20 (0.02) 22.20 (0.02) 21.20 (1) 21.23 (1) 21.20 (1) 21.23 21.20 (0.8) 22.00 22.23 22.23 (0.01) 22.20 (0.02) 23.26 (4)
Composition H H H H H H H
Proper motion (right ascension) [mas/yr] 55.3384477 (0.03) 55.13691143 (0.07) 55.338 (0.03) 55.13691143
Proper motion (declination) [mas/yr] -314.1996029 (0.03) -313.9527028 (0.06) -314.2 (0.03) -313.9527028
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity DDr yes
B magnitude 12.80
V magnitude 12.88 12.82 12.83
R magnitude 13.30
I magnitude
J magnitude 13.10 (0.03)
H magnitude 13.16 (0.04)
K magnitude 13.17 (0.04)
u magnitude 13.31 (0.004) 13.18 (0.003)
g magnitude 14.29 (0.009) 12.94 (0.003)
r magnitude 14.27 (0.01) 13.30 (0.006)
i magnitude 13.54 (0.003) 13.44 (0.003)
z magnitude 13.58 (0.004) 13.51 (0.004)
G magnitude 12.89 (0.001) 12.90 12.90 12.89 12.89 (0.003) 12.90
BP magnitude 12.84 (0.001) 12.82 12.82
RP magnitude 12.99 (0.002) 13.00 13.00
Pan g magnitude 12.82 (0.01)
Pan r magnitude 13.05 (0.02)
Pan i magnitude 13.32 (0.001)
Pan z magnitude 13.56 (0.005)
Pan y magnitude 13.72 (0.004)
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.