WD 1235+422

All names: 12378+4156, PM J12378+4156, Gaia DR2 1534384148897669248, SDSS J123752.11+415625.8, 1235+422, USNO-B1.0 1319-00263195, NLTT 31347, TIC 148719841, WD 1235+422, SDSS J123752.12+415625.8, PSO J189.4661+41.9412, Gaia DR3 1534384148897669248, J1237+4156, LHS 5222, WDJ123752.23+415624.69, LSPM J1237+4156, LP 217-47, Gaia EDR3 1534384148897669248, 2MASS J12375226+4156245, GSC2U J123752.6+415622

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Coutu et al. 2019 Blouin et al. 2019 Leggett et al. 2018 MWDD H MWDD HE Gaia DR2 Stilism Ferrario et al. 2015 Limoges et al. 2015 Kawka et Vennes 2006 Koester et al. 2006 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 37 51.73 (0.05) 12 37 52.12 12 37 51.75 (0.06) 12 37 52.23 12 37 51.75 (0.06) 12 37 51.73 12 37 52.23 (0.05) 12 37 51.75 12 37 53.14 12 37 52.12
Declination 41 56 30.25 (0.05) 41 56 25.82 41 56 30.08 (0.06) 41 56 24.69 41 56 30.08 (0.06) 41 56 30.25 41 56 24.69 (0.05) 41 56 30.08 41 56 06.72 41 56 25.83
Spectral type DQP DQP DQP DQ DQ DQ8.2 DQ DQ DQ DQ DQ DQ DQ DQ7.2 DQ DQ
Effective temperature [K] 5229.0 (60) 6178.0 (16) 5207.9 (56) 6169.0 (53) 6140.0 (45) 6174.0 (19) 5295.0 5016.0 6350.0 (244) 6250.0 5846.0 6074.0 (13) 6319.0 (13)
log(g) [cgs] 7.80 (0.04) 8.22 (0.005) 7.80 (0.04) 8.23 8.21 (0.02) 8.25 (0.02) 7.87 7.67 8.00 (0) 8.00 8.00 (0) 8.21 (0.005) 10.00 (0.002)
Mass [M] 0.478 (0.02) 0.715 (0.005) 0.7197 0.706 (0.01) 0.734 (0.02) 0.506 0.389 0.57 (0.1) 0.57 0.708 (0.005)
log(Luminosity) [L] -3.64
Cooling age [Gyr] 3.7600 3.9100 3.8030 (0.2) 4.0370 (0.1) 2.8530 2.8750
log(H/He)
log(C/He) -5.24 -5.2394 (0.01) -5.2 -5.51 (0.01)
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] 27.71 (0.07) 27.71 (0.07) 27.66 (0.09) 27.66 (0.09) 27.66 27.66 (0.09) 28.23 (0.4) 27.66 (0.09) 27.71 27.71 (0.07) 27.66 (0.09)
Distance [pc] 36.09 (0.09) 36.09 (0.09) 36.15 (0.1) 36.15 (0.1) 36.15 (0.1) 36.16 (0.1) 35.42 (0.5) 36.15 (0.1) 46.20 (8) 27.00 36.09 36.09 (0.09) 36.15 (0.1)
Composition He He He He He He
Proper motion (right ascension) [mas/yr] -349.1368422 (0.06) -349.1236871 (0.1) -349.137 (0.06) -349.124
Proper motion (declination) [mas/yr] 347.9983738 (0.05) 347.99466 (0.1) 347.998 (0.05) 347.995
Variability
Magnetic yes
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.80
V magnitude
R magnitude 16.70
I magnitude
J magnitude 16.35 (0.01) 16.55 (0.09) 16.55 (0.09)
H magnitude 16.48 (0.2) 16.50 (0.2) 16.50 (0.2)
K magnitude
u magnitude 17.82 (0.01) 17.81 (0.01) 17.82 (0.01) 17.82 (0.01) 17.85 17.84 (0.01)
g magnitude 17.73 (0.005) 17.73 (0.005) 17.73 (0.005) 17.75 17.77 (0.02)
r magnitude 17.10 (0.005) 17.09 (0.009) 17.10 (0.005) 17.11 17.12 (0.02)
i magnitude 16.84 (0.005) 16.85 (0.004) 16.84 (0.005) 16.85 16.83 (0.02)
z magnitude 16.93 (0.01) 16.93 (0.004) 16.93 (0.01) 16.93 16.94 (0.02)
G magnitude 17.13 (0.009) 17.15 17.15 17.13 17.13 (0.003) 17.15
BP magnitude 17.54 (0.009) 17.45 17.45
RP magnitude 16.56 (0.01) 16.53 16.53
Pan g magnitude 17.79 (0.02) 17.79 (0.02) 17.79 (0.02)
Pan r magnitude 17.09 (0.01) 17.09 (0.01) 17.09 (0.01)
Pan i magnitude 16.85 (0.004) 16.85 (0.004) 16.85 (0.004)
Pan z magnitude 16.93 (0.004) 16.93 (0.004) 16.93 (0.004)
Pan y magnitude 16.97 (0.001) 16.97 (0.01) 16.97 (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.