Gaia DR2 3198881613315343872

All names: WDJ042731.73-070802.80, 042731.73-070802.80, J0427-0708, 2MASS J04273174-0708027, Gaia DR3 3198881613315343872, GALEX J042731.8-070802, Gaia EDR3 3198881613315343872, Gaia DR2 3198881613315343872, LAMOST J042731.84-070802.3, TIC 37990255

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 O'Brien et al. 2022 Tremblay et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 04 27 31.90 (0.04) 04 27 31.90 04 27 31.90 04 27 31.73 (0.04) 04 27 31.90
Declination -07 08 02.16 (0.03) -07 08 02.18 -07 08 02.16 -07 08 02.80 (0.03) -07 08 02.18
Spectral type DC DC DC DC DC DC
Effective temperature [K] 6717.0 (56) 6698.0 (36) 6720.0 (60) 6850.0 (40) 7211.0 6942.0 6539.0 (55)
log(g) [cgs] 8.04 (0.03) 8.04 (0.01) 8.04 (0.03) 8.15 (0.02) 8.29 8.18 8.04 (0.01)
Mass [M] 0.595 (0.02) 0.598 (0.008) 0.773 0.689 0.599 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 1.9200 2.4730 2.2930
log(H/He) -3.2
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] 25.17 (0.06) 25.17 (0.06) 25.18 (0.07) 25.17 (0.06) 25.18 (0.07) 25.17 25.17 (0.06) 25.18 (0.07)
Distance [pc] 39.73 (0.09) 39.73 (0.09) 39.71 (0.1) 39.73 (0.09) 39.71 (0.1) 39.73 39.73 (0.09) 39.71 (0.1)
Composition He
Proper motion (right ascension) [mas/yr] 163.4139272 (0.05) 163.5424346 (0.1) 163.414 (0.05) 163.5424346
Proper motion (declination) [mas/yr] 40.23663453 (0.04) 40.25963407 (0.06) 40.237 (0.04) 40.25963407
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude 16.25 (0.08) 16.25 (0.08)
H magnitude 16.06 (0.1) 16.06 (0.1)
K magnitude 15.62 (0.2) 15.62 (0.2)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 16.74 (0.004) 16.75 16.74 16.74 (0.003) 16.75
BP magnitude 16.92 (0.004) 16.92 16.92
RP magnitude 16.41 (0.004) 16.41 16.41
Pan g magnitude 16.90 (0.004) 16.90 (0.005)
Pan r magnitude 16.75 (0.003) 16.75 (0.004)
Pan i magnitude 16.75 (0.003) 16.75 (0.003)
Pan z magnitude 16.81 (0.005) 16.81 (0.004)
Pan y magnitude 16.84 (0.009) 16.84 (0.01)
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.