EGGR 181

All names: 0654+027, EGGR 181, G108-42, Gaia DR2 3127761765259717632, TIC 237754344, NLTT 17211, WD 0654+02, LSPM J0657+0241, USNO 514, G 108-42, J0657+0240, PM J06573+0241, USNO-B1.0 0926-00142612, WD 0654+027, WDJ065722.88+024100.84, Gaia DR3 3127761765259717632, 06573+0241, GEN# +9.80108042, PLX 1630.01, Gaia EDR3 3127761765259717632, 2MASS J06572287+0241011, [SC93] 529

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 McCleery et al. 2020 Leggett et al. 2018 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 06 57 22.96 (0.05) 06 57 22.95 (0.06) 06 57 22.95 (0.06) 06 57 22.96 06 57 22.88 (0.05) 06 57 22.95 06 57 22.82
Declination 02 40 57.61 (0.05) 02 40 57.71 (0.06) 02 40 57.71 (0.06) 02 40 57.61 02 41 00.84 (0.05) 02 40 57.71 02 41 03.12
Spectral type DC DC DC5.4 DC DC DC DC DC DC5 DC5
Effective temperature [K] 8972.0 (46) 9033.1 (173) 9269.0 (249) 9403.0 9147.0 8100.0 (893) 9450.0 (340) 8858.0 (89)
log(g) [cgs] 8.27 (0.008) 8.31 (0.04) 8.37 (0.04) 8.47 8.39 8.22 (0.2) 8.51 (0.2) 8.26 (0.01)
Mass [M] 0.752 (0.007) 0.815 (0.03) 0.898 0.83 0.72 (0.1) 0.91 (0.1) 0.743 (0.01)
log(Luminosity) [L] -3.34 -3.26 (0.1)
Cooling age [Gyr] 1.2800 1.3330 (0.2) 1.6390 1.4680 1.7900 (0.6)
log(H/He) -4.2
log(C/He)
log(Ca/He)
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 24.88 (0.06) 25.03 (0.08) 25.03 (0.08) 24.18 (0.6) 25.03 (0.08) 26.00 (4) 26.00 (4) 24.88 24.88 (0.06) 25.03 (0.08) 26.00 (37)
Distance [pc] 40.19 (0.09) 39.95 (0.1) 39.96 (0.1) 41.36 (1) 39.96 (0.1) 38.50 (7) 38.46 (5) 40.19 40.19 (0.09) 39.96 (0.1) 38.46 (55)
Composition He He He He
Proper motion (right ascension) [mas/yr] 67.56693214 (0.06) 67.48479845 (0.1) 67.567 (0.06) 67.48479845
Proper motion (declination) [mas/yr] -201.8674523 (0.05) -201.844337 (0.1) -201.867 (0.05) -201.844337
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.29 16.28
V magnitude 16.17
R magnitude 16.02 16.00
I magnitude 15.97
J magnitude 16.01 (0.005) 15.98 16.09 (0.09)
H magnitude 15.97 (0.009) 15.98 15.82 (0.1)
K magnitude 15.97 (0.02) 15.98 15.40 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.10 (0.003) 16.12 16.12 16.10 16.10 (0.003) 16.12
BP magnitude 16.17 (0.003) 16.13 16.13
RP magnitude 15.97 (0.003) 15.96 15.96
Pan g magnitude 16.17 (0.005) 16.17 (0.004)
Pan r magnitude 16.20 (0.006) 16.20 (0.005)
Pan i magnitude 16.31 (0.004) 16.31 (0.003)
Pan z magnitude 16.45 (0.003) 16.45 (0.003)
Pan y magnitude 16.55 (0.006) 16.55 (0.006)
E(B-V) 0.000

* 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.