Wolf 219

All names: Gaia DR2 44901791432527232, Ci 20 257, Gaia EDR3 44901791432527232, J0344+1825, LSPM J0344+1826, GEN# +9.80006030, PSO J056.1465+18.4326, WD 0341+182, Gaia DR3 44901791432527232, W 219, GJ 151, LFT 306, LHS 179, UCAC2 38199394, W219, G 6-30, UBV 3555, NLTT 11722, 2MASS J03443482+1826110, PLX 791, uvby98 980006030, LAWD 15, WDJ034434.85+182609.82, EPIC 210705164, CSI+18-03417, USNO 305, CNS5 946, PM J03445+1826, WD 0341+18, LTT 11239, WISEA J034435.14+182558.0, PLX 791.00, 03445+1826, EGGR 24, USNO-B1.0 1084-00048965, TIC 67827103, Wolf 219

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Blouin & Dufour 2019 Blouin et al. 2019 Gaia DR2 Stilism Holberg et al. 2016 Limoges et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Holberg et al. 2008 Dufour et al. 2005 Bergeron et al. 2001 Bergeron et al. 1997 Weidemann and Koester 1995 Wegner and Yackovich 1984 Koester et al. 1982a Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 03 44 35.31 (0.03) 03 44 35.30 (0.05) 03 44 35.30 (0.05) 03 44 34.80 03 44 35.31 03 44 34.85 (0.03) 03 44 35.30 03 44 34.08
Declination 18 25 51.74 (0.02) 18 25 52.31 (0.03) 18 25 52.31 (0.03) 18 26 09.60 18 25 51.74 18 26 09.82 (0.02) 18 25 52.31 18 26 53.52
Spectral type DQ DQ DQ DQpec DQ DQ DQ DQ7.7 DQ DQ DQ DQ DQ DQ DQ DQ DQ8 DQ8
Effective temperature [K] 6837.0 (48) 6548.0 (29) 6833.4 (22) 6515.0 (60) 6515.0 (60) 6569.0 (136) 6420.0 (108) 6568.0 6568.0 (136) 6510.0 (130) 6900.0 (170) 6860.0 (200) 6700.0 6600.0 6700.0 (300) 6612.0 (17)
log(g) [cgs] 8.10 (0.02) 7.98 (0.008) 8.10 (0.01) 7.97 (0.03) 7.97 (0.03) 7.96 (0.09) 7.93 (0.09) 7.99 (0.09) 7.99 (0.1) 8.16 (0.09) 8.17 (0.09) 7.99 (0.005)
Mass [M] 0.634 (0.01) 0.56 (0.006) 0.558 (0.01) 0.558 (0.01) 0.57 (0.06) 0.53 (0.05) 0.57 (0.06) 0.57 (0.06) 0.67 (0.05) 0.68 (0.06) 0.51 (0.1) 0.57 (0.004)
log(Luminosity) [L] -3.58 -3.57 -3.58 (0.05) -3.60 (0.05)
Cooling age [Gyr] 1.8700 1.7880 (0.07) 1.6800 1.8900 2.2400 (0.3) 2.6900 (0.4) 1.2000
log(H/He) <-2.7
log(C/He) -6.41 -6.5 (0.04) -6.45 -6.37 -6.41 (0.1) -6.2 -6.0 -6.2
log(Ca/He)
log(Ca/H)
log(Li/He)
log(Be/He)
log(B/He)
log(N/He) <-9
log(O/He) <-9
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(K/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] 52.96 (0.04) 52.96 (0.04) 53.00 (0.05) 53.00 (0.05) 53.00 (0.05) 53.00 (0.05) 53.00 (0.05) 52.60 (3) 52.60 (3) 52.60 (3) 52.60 (3) 52.60 (3) 52.60 (3) 0.05 52.96 52.96 (0.04) 53.00 (0.05) 56.30 (4)
Distance [pc] 18.88 (0.01) 18.88 (0.01) 18.87 (0.02) 18.87 (0.02) 18.87 (0.02) 18.87 (0.02) 18.87 (0.02) 19.01 (1) 19.00 (1) 19.01 19.00 (1) 19.01 19.01 (1) 19.01 (1) 19607.84 18.88 18.88 (0.01) 18.87 (0.02) 17.76 (1)
Composition He He He He He He He He He He He He
Proper motion (right ascension) [mas/yr] 412.5176466 (0.04) 412.6773573 (0.1) 412.518 (0.04) 412.6773573
Proper motion (declination) [mas/yr] -1129.77588 (0.03) -1129.835337 (0.06) -1129.776 (0.03) -1129.835337
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.52 15.52 15.52 15.50
V magnitude 15.19 15.19 15.19 15.19
R magnitude 14.91 14.91 14.91 14.80
I magnitude 14.65 14.65 14.65
J magnitude 14.56 (0.03) 14.59 (0.03) 14.56 14.56 14.56 14.59 (0.03)
H magnitude 14.35 (0.03) 14.35 (0.05) 14.35 14.35 14.35 14.35 (0.05)
K magnitude 14.40 (0.03) 14.23 (0.06) 14.40 14.40 14.40 14.23 (0.06)
u magnitude
g magnitude 15.28 (0.002)
r magnitude 15.08 (0.001)
i magnitude 15.06 (0.004)
z magnitude 15.15 (0.004)
G magnitude 15.06 (0.002) 15.07 15.07 15.06 15.06 (0.003) 15.07
BP magnitude 15.25 (0.002) 15.24 15.24
RP magnitude 14.72 (0.002) 14.73 14.73
Pan g magnitude 15.27 (0.01) 15.27 (0.01) 15.28 15.28 (0.002)
Pan r magnitude 15.07 (0.0005) 15.07 (0.0005) 15.08 15.08 (0.001)
Pan i magnitude 15.07 (0.004) 15.07 (0.004) 15.06 15.06 (0.004)
Pan z magnitude 15.12 (0.004) 15.12 (0.004) 15.15 15.15 (0.004)
Pan y magnitude 15.17 (0.01) 15.17 (0.01) 15.14 15.14 (0.001)
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.