LAWD 80

All names: EGGR 137, 2MASS J20101750-2146452, uvby98 620020137, Gaia EDR3 6853784501721502720, WD 2007-219, LP 870-43, Gaia DR2 6853784501721502720, L710-30, LTT 7983, WD 2007-21, GALEX J201017.5-214647, WD2007-219, NLTT 48815, GJ 781.3, Gaia DR3 6853784501721502720, TIC 75232547, WISEA J201017.58-214649.2, LAWD 80, J2010-2146, UBV 17338, CSI-21-20073, WDJ201017.52-214645.80, L 710-30, USNO-B1.0 0682-00889937

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Gianninas et al. 2011 Koester et al. 2009 Subasavage et al. 2009 Subasavage et al. 2008 Zuckerman et al. 2003 Koester et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 20 10 17.64 (0.02) 20 10 17.63 (0.03) 20 10 17.51 20 10 17.51 20 10 17.50 20 10 17.64 20 10 17.52 (0.02) 20 10 17.63 20 10 14.45
Declination -21 46 50.90 (0.01) -21 46 50.74 (0.02) -21 46 45.60 -21 46 45.60 -21 46 46.00 -21 46 50.90 -21 46 45.80 (0.01) -21 46 50.74 -21 46 05.88
Spectral type DA DA DA DA DA DA5.5 DA DA DA5.0 DA6
Effective temperature [K] 9720.0 (79) 9608.0 (6) 9545.0 9842.0 (144) 10030.0 (146) 9788.0 (6) 9520.0 (230) 9556.0 (242) 10021.0 9816.0 (10) 9605.0 (39)
log(g) [cgs] 7.97 (0.02) 7.96 (0.002) 7.94 8.01 (0.05) 8.23 (0.06) 8.07 (0.006) 7.97 (0.04) 8.18 8.08 (0.02) 7.95 (0.007)
Mass [M] 0.582 (0.01) 0.575 (0.001) 0.567 0.58 (0.08) 0.74 (0.04) 0.58 (0.02) 0.65 0.57 (0.005)
log(Luminosity) [L] -2.90 (0.03)
Cooling age [Gyr] 0.6600 0.6325 0.6600 (0.03)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) <-10.274
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] 37.16 (0.02) 37.16 (0.02) 37.16 (0.03) 37.16 (0.03) 38.22 (0.9) 37.16 37.16 (0.02) 37.16 (0.03) 38.20 (0.9)
Distance [pc] 26.91 (0.02) 26.91 (0.01) 26.91 (0.02) 26.91 (0.02) 26.20 (0.6) 24.00 26.16 (0.6) 25.70 26.91 26.91 (0.02) 26.91 (0.02) 26.18 (0.6)
Composition H H H H H
Proper motion (right ascension) [mas/yr] 101.1551962 (0.02) 101.1835829 (0.05) 101.155 (0.02) 101.1835829
Proper motion (declination) [mas/yr] -318.7735474 (0.01) -318.7771468 (0.03) -318.774 (0.01) -318.7771468
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.60
V magnitude 14.40 14.40 14.58
R magnitude 14.50
I magnitude
J magnitude 14.23 (0.002) 14.19 (0.02) 14.20 (0.02) 14.20 (0.02)
H magnitude 14.20 (0.04) 14.20 (0.04) 14.20 (0.04) 14.20 (0.04)
K magnitude 14.21 (0.007) 14.26 (0.08) 14.26 (0.08) 14.26 (0.08)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.37 (0.001) 14.39 14.37 14.37 (0.003) 14.39
BP magnitude 14.44 (0.001) 14.43 14.43
RP magnitude 14.26 (0.001) 14.27 14.27
Pan g magnitude 14.42 (0.0004) 14.42 (0.0004)
Pan r magnitude 14.48 (0.02) 14.48 (0.02)
Pan i magnitude 14.58 (0.004) 14.58 (0.003)
Pan z magnitude 14.74 (0.0004) 14.74 (0.0004)
Pan y magnitude 14.85 (0.01) 14.85 (0.01)
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.