Wolf 1

All names: LSPM J0013+0019, SDSS J001339.20+001924.2, 00136+0019, UBV M 42393, Ci 20 13, J0013+0019, WD 0011+000, G 31-35, TIC 58733472, WIRED J001339.20+001924.3, G31-35, PB 5804, LAWD 3, EGGR 2, SDSS J001339.20+001924.3, PLX 34.01, Gaia DR2 2545505281002947200, WD 0011+00, SDSS J001339.11+001924.9, FBS 0011+000, CSI+00-00111, WD0011+000, PM J00136+0019, Wolf 1, SDSS J001339.19+001924.3, NLTT 659, WDJ001339.15+001924.58, USNO-B1.0 0903-00002191, GEN# +9.80031035, Gaia EDR3 2545505281002947200, SDSS J001339.19+001924.2, GALEX J001339.3+001924, USNO 101, LHS 6003, UCAC2 31794835, UBV 136, 2MASS J00133912+0019248, SDSS J001339.10+001924.8, LTT 10078, Gaia DR3 2545505281002947200

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 Kilic et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Stilism Limoges et al. 2015 Gianninas et al. 2011 Tremblay et al. 2011 Koester et al. 2009 Zuckerman et al. 2003 Koester et al. 2001 Bergeron et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 00 13 39.60 (0.04) 00 13 39.20 00 13 39.59 (0.05) 00 13 39.20 00 13 39.60 00 13 39.15 (0.04) 00 13 39.59 00 13 39.20 00 13 37.78 00 13 39.11 00 13 39.11
Declination 00 19 21.64 (0.03) 00 19 24.23 00 19 21.73 (0.03) 00 19 23.00 00 19 21.64 00 19 24.58 (0.03) 00 19 21.73 00 19 24.31 00 19 28.92 00 19 24.90 00 19 24.89
Spectral type DA DA DA DA DA DA DA DA DA DA DA DA DA5.2 DA DA6 DA DA
Effective temperature [K] 9386.0 (24) 9529.0 (94) 9507.0 (22) 9507.0 (68) 4306.0 9498.0 (137) 9520.0 (137) 9710.0 (140) 9600.0 (10) 9472.0 (7) 9610.0 9612.0 (9) 9610.0 (260) 9399.0 (55) 9515.0 (13) 9444.0 (27)
log(g) [cgs] 7.96 (0.005) 7.99 (0.03) 7.99 (0.004) 7.99 (0.01) 7.35 8.00 (0.05) 7.97 (0.05) 8.24 (0.05) 8.32 (0.02) 8.04 (0.01) 8.40 8.11 (0.02) 8.40 (0.2) 7.97 (0.01) 8.29 (0.01) 8.17 (0.03)
Mass [M☉] 0.573 (0.004) 0.593 (0.01) 0.591 (0.004) 0.59 (0.009) 0.263 0.58 (0.03) 0.75 (0.04) 0.8 (0.01) 0.67 0.85 (0.1) 0.579 (0.008)
log(Luminosity) [L☉] -2.90 -3.15 (0.1)
Cooling age [Gyr] 0.7100 2.9090 1.0965 1.2900 (0.5)
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) <-10.419
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] 25.00 (0.04) 25.00 (0.04) 24.96 (0.06) 24.96 (0.06) 32.90 (5) 32.90 (5) 25.00 25.00 (0.04) 24.96 (0.06) 31.00 (4)
Distance [pc] 40.00 (0.07) 40.00 (0.06) 40.06 (0.1) 40.06 (0.1) 29.70 (4) 30.40 (4) 34.00 30.40 (4) 40.00 40.00 (0.07) 40.06 (0.1) 32.26 (4)
Composition H H H H H H H
Proper motion (right ascension) [mas/yr] 421.3141864 (0.05) 421.383833 (0.1) 421.314 (0.05) 421.383833 416.2 398.0
Proper motion (declination) [mas/yr] -183.8638612 (0.03) -183.8093305 (0.07) -183.864 (0.03) -183.8093305 -182.2 -175.0
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.55 15.55
V magnitude 15.31 15.31 15.35
R magnitude 15.27 15.40
I magnitude 15.17
J magnitude 15.15 (0.01) 15.21 15.15 (0.006)
H magnitude 15.12 (0.01) 15.13 15.21 (0.09)
K magnitude 15.16 (0.02) 15.12 15.16 (0.02)
u magnitude 18.04 (0.2) 15.78 (0.005) 18.04 (0.2) 18.04 (0.2) 15.75 (0.02) 15.75 (0) 15.76 (0.02)
g magnitude 18.65 (0.2) 18.65 (0.2) 18.65 (0.2) 15.37 (0.03) 15.36 15.37 (0.02)
r magnitude 15.11 (0.01) 15.11 (0.01) 15.11 (0.01) 15.43 (0.03) 15.43 (0) 15.43 (0.03)
i magnitude 17.66 (0.2) 17.66 (0.2) 17.66 (0.2) 15.50 (0.02) 15.50 (0) 15.50 (0.02)
z magnitude 15.86 (0.1) 15.86 (0.1) 15.86 (0.1) 15.69 (0.02) 15.69 (0) 15.70 (0.02)
G magnitude 15.34 (0.003) 15.35 15.34 15.34 (0.003) 15.35
BP magnitude 15.40 (0.003) 15.40 15.40
RP magnitude 15.21 (0.002) 15.21 15.21
Pan g magnitude 15.36 (0.007) 15.38 (0.001)
Pan r magnitude 15.42 (0.004) 15.42 (0.002)
Pan i magnitude 15.53 (0.003) 15.53 (0.008)
Pan z magnitude 15.66 (0.004) 15.66 (0.005)
Pan y magnitude 15.78 (0.008) 15.76 (0.003)
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.