EGGR 140

All names: WD 2039-682, CNS5 5119, WD 2039-68, 2MASS J20442148-6805215, Gaia EDR3 6424566979354709248, WG 36, BPM 13491, GJ 2149, LTT 8190, uvby98 986116079, USNO-B1.0 0219-00715909, GEN# +6.20020140, GALEX J204421.3-680523, EGGR 140, L 116-79, NSV 25258, CSI-68-20396, WDJ204421.46-680521.36, TIC 372109346, EC 20396-6816, LEHPM 3979, Gaia DR2 6424566979354709248, Gaia DR3 6424566979354709248, NLTT 49716, GSC 09308-01422, UBV 17922, UBV M 42364

Parameter Unit Gaia EDR3 O'Brien et al. 2024 Hardy et al. 2023a Gaia DR2 Stilism Holberg et al. 2016 Ferrario et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 20 44 21.98 (0.01) 20 44 21.96 (0.03) 20 44 21.36 20 44 21.98 20 44 21.46 (0.01) 20 44 21.96 20 44 16.73
Declination -68 05 25.01 (0.02) -68 05 24.89 (0.04) -68 05 20.40 -68 05 25.01 -68 05 21.36 (0.02) -68 05 24.89 -68 05 09.24
Spectral type DA DA DA DA DA3.1 DA DA DA DA3.0 DA3
Effective temperature [K] 16420.0 (267) 29998.8 (9e-05) 17105.0 (298) 16050.0 15855.0 17105.0 (289) 16970.0 (289) 16943.0 (12) 16840.0 (97)
log(g) [cgs] 8.46 (0.02) 9.14 (0.2) 8.59 (0.05) 8.59 (0.05) 8.59 (0.05) 8.34 (0.002) 8.49 (0.004)
Mass [M] 0.905 (0.01) 1.2560676492608855 (0.1) 0.98 (0.03) 0.98 (0.03) 0.98 (0.03) 0.92 (0.003)
log(Luminosity) [L] -2.27
Cooling age [Gyr] 0.4000 0.3600
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] 51.10 (0.03) 51.10 (0.03) 50.98 (0.05) 51.10 51.10 (0.03) 50.98 (0.05)
Distance [pc] 19.57 (0.01) 19.57 (0.01) 19.62 (0.02) 18.60 (0.4) 22.00 19.60 (0.9) 18.00 19.57 19.57 (0.01) 19.62 (0.02)
Composition H H H
Proper motion (right ascension) [mas/yr] 182.094602 (0.02) 182.0905018 (0.06) 182.095 (0.02) 182.0905018
Proper motion (declination) [mas/yr] -228.166806 (0.02) -228.2049485 (0.08) -228.167 (0.02) -228.2049485
Variability
Magnetic yes
Bd [MG] 0.05 *
Infrared excess (disk)
Binarity
B magnitude 13.35
V magnitude 13.25 13.45 13.25 13.30
R magnitude 13.80
I magnitude
J magnitude 13.73 (0.03)
H magnitude 13.81 (0.04)
K magnitude 13.80 (0.05)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 13.34 (0.0008) 13.36 13.34 13.34 (0.003) 13.36
BP magnitude 13.29 (0.0008) 13.28 13.28
RP magnitude 13.47 (0.0006) 13.48 13.48
Pan g magnitude
Pan r magnitude
Pan i magnitude
Pan z magnitude
Pan y magnitude
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.