EGGR 411

All names: Gaia EDR3 127366331745660288, 0228+269, PSO J037.9221+27.1645, Gaia DR2 127366331745660288, WD 0228+26, WD 0228+269, Gaia DR3 127366331745660288, USNO-B1.0 1171-00034696, 2MASS J02314090+2709501, PM J02316+2709, 02316+2709, LP 354-381, NLTT 8212, SDSS J023141.14+270951.5, WDJ023140.97+270950.48, J0231+2709, EGGR 411, LSPM J0231+2709, TIC 22712756, SDSS J023141.14+270951.4

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Blouin et al. 2019 Leggett et al. 2018 MWDD H Gaia DR2 Stilism Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 02 31 41.44 (0.08) 02 31 41.43 (0.09) 02 31 41.43 (0.09) 02 31 41.44 02 31 40.97 (0.08) 02 31 41.43 02 31 36.53
Declination 27 09 53.14 (0.06) 27 09 53.06 (0.08) 27 09 53.06 (0.08) 27 09 53.14 27 09 50.48 (0.06) 27 09 53.06 27 09 14.76
Spectral type DC DA DC DA DA DC:10.4 DA DA DC: DC9 DC9
Effective temperature [K] 4824.0 (16) 4779.0 (52) 4849.0 (15) 4801.4 (48) 4830.0 (25) 4855.0 (77) 4838.0 4850.0 (107) 4928.0 (36)
log(g) [cgs] 7.86 (0.009) 7.82 (0.04) 7.89 (0.009) 7.85 (0.04) 7.87 (0.02) 7.89 (0.05) 7.87 8.00 (0) 7.93 (0.02)
Mass [M] 0.496 (0.007) 0.472 (0.01) 0.515 (0.007) 0.502 (0.01) 0.513 (0.04) 0.502 0.58 (0.1) 0.539 (0.01)
log(Luminosity) [L] -4.10
Cooling age [Gyr] 5.3900 4.9750 (0.3) 5.0680 (0.7) 4.9330
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] 35.52 (0.09) 35.52 (0.09) 35.54 (0.1) 35.54 (0.1) 35.54 (0.1) 35.63 (1) 35.54 (0.1) 35.52 35.52 (0.09) 35.54 (0.1)
Distance [pc] 28.16 (0.07) 28.15 (0.07) 28.14 (0.08) 28.14 (0.08) 28.14 (0.08) 28.07 (0.9) 28.14 (0.08) 26.20 (4) 28.16 28.16 (0.07) 28.14 (0.08)
Composition H H H H H H
Proper motion (right ascension) [mas/yr] 390.7490276 (0.09) 390.7752261 (0.2) 390.749 (0.09) 390.7752261
Proper motion (declination) [mas/yr] 166.3914273 (0.08) 166.4374374 (0.2) 166.391 (0.08) 166.4374374
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.60
V magnitude
R magnitude 16.70
I magnitude
J magnitude 15.80 (0.01) 15.84 (0.06) 15.84 (0.06)
H magnitude 15.44 (0.09) 15.44 (0.09) 15.44 (0.09)
K magnitude 15.31 (0.1) 15.31 (0.1) 15.31 (0.1)
u magnitude 19.58 (0.03) 19.58 (0.04) 19.58 (0.04)
g magnitude 17.74 (0.005) 17.85 (0.006)
r magnitude 17.06 (0.004) 17.06 (0.005)
i magnitude 16.79 (0.004) 16.77 (0.005)
z magnitude 16.69 (0.005) 16.62 (0.009)
G magnitude 17.10 (0.009) 17.12 17.12 17.10 17.10 (0.003) 17.12
BP magnitude 17.62 (0.009) 17.63 17.63
RP magnitude 16.43 (0.007) 16.45 16.45
Pan g magnitude 17.74 (0.004) 17.74 (0.006) 17.74 (0.006)
Pan r magnitude 17.06 (0.004) 17.06 (0.004) 17.06 (0.004)
Pan i magnitude 16.79 (0.004) 16.79 (0.004) 16.79 (0.004)
Pan z magnitude 16.69 (0.004) 16.69 (0.005) 16.69 (0.005)
Pan y magnitude 16.63 (0.01) 16.63 (0.01) 16.63 (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.