PG 1015+161

All names: SDSS J101803.74+155157.7, SDSS J101803.73+155157.7, J1018+1551, GALEX J101803.8+155158, Gaia EDR3 3888723386196630784, Gaia DR2 3888723386196630784, WISE J101803.75+155158.1, WDJ101803.83+155158.57, USNO-B1.0 1058-00191322, SDSS J101803.74+155157.74, PG 1015+161, Gaia DR3 3888723386196630784, WISEA J101803.75+155158.0, SDSS J101803.78+155158.1, WD 1015+161

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR10 SDSS DR12 Kilic et al. 2025 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Kepler et al. 2015 Koester et al. 2014 Gaensicke et al. 2012 Gianninas et al. 2011 Farihi et al. 2010 Koester et al. 2009 Jura et al. 2007 Kilic et al. 2006 Koester et al. 2005 Liebert et al. 2005 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999) Vincent et al. 2023
Right ascension 10 18 03.70 (0.04) 10 18 03.78 10 18 03.78 10 18 03.71 (0.06) 10 18 03.70 10 18 03.83 (0.04) 10 18 03.71 10 18 03.10
Declination 15 51 57.47 (0.04) 15 51 58.13 15 51 58.13 15 51 57.50 (0.05) 15 51 57.47 15 51 58.57 (0.04) 15 51 57.50 15 51 57.96
Spectral type DA DA DA DA DAZ DA DAZ DA DA DA2.5 DA DA2.5 DA
Effective temperature [K] 19228.0 (346) 19226.0 (344) 17059.0 20676.0 (45) 18911.0 (257) 19200.0 (180) 20420.0 (324) 19500.0 19948.0 (33) 19300.0 19300.0 19300.0 19540.0 (305) 19074.0 (244)
log(g) [cgs] 8.03 (0.01) 8.04 (0.01) 7.91 8.19 (0.01) 8.04 (0.09) 8.22 (0.06) 8.11 (0.05) 7.92 (0.006) 7.90 7.90 8.04 (0.05) 8.02 (0.01)
Mass [M☉] 0.638 (0.01) 0.642 (0.01) 0.565 0.721 (0.006) 0.643 (0.05) 0.69 (0.03) 0.65 (0.03) 0.635 (0.01)
log(Luminosity) [L☉] -1.67
Cooling age [Gyr] 0.1075 0.1096
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -6.3 (0.2) -6.3 -6.3
log(C/H) <-8.00 <-8.00
log(N/H)
log(O/H) -5.5 (0.2)
log(Na/H)
log(Mg/H) -5.3 (0.2)
log(Al/H)
log(Si/H) -6.4 (0.1) -6.4 (0.2)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H) <-5.80
log(Mn/H)
log(Fe/H) -5.5 (0.3)
log(Ni/H)
Parallax [mas] 11.36 (0.05) 11.43 (0.06) 11.36 11.36 (0.05) 11.43 (0.06)
Distance [pc] 88.02 (0.4) 87.50 (0.5) 88.00 95.00 90.00 88.02 88.01 (0.4) 87.50 (0.5)
Composition H H H H H H
Proper motion (right ascension) [mas/yr] -111.1627071 (0.05) -110.9837349 (0.1) -111.163 (0.05) -110.984
Proper motion (declination) [mas/yr] -68.67923789 (0.04) -68.61982446 (0.1) -68.679 (0.04) -68.62
Variability
Magnetic
Bd [MG]
Infrared excess (disk) yes yes
Binarity
B magnitude 15.70
V magnitude 15.61 (0.06) 15.57 15.62
R magnitude 15.20
I magnitude
J magnitude 15.95 (0.01)
H magnitude 15.94 (0.02)
K magnitude 15.91 (0.04)
u magnitude 15.52 (0.005) 15.52 (0.005) 15.51 (0.03) 15.52 (0.005) 15.52 (0.005)
g magnitude 15.45 (0.004) 15.45 (0.004) 15.47 (0.03) 15.45 (0.004) 15.45 (0.004)
r magnitude 15.81 (0.004) 15.81 (0.004) 15.79 (0.03) 15.81 (0.004) 15.81 (0.004)
i magnitude 16.09 (0.005) 16.09 (0.005) 16.09 (0.02) 16.09 (0.005) 16.09 (0.005)
z magnitude 16.38 (0.007) 16.38 (0.007) 16.39 (0.03) 16.38 (0.007) 16.38 (0.007)
G magnitude 15.64 (0.002) 15.66 15.64 15.64 (0.003) 15.66
BP magnitude 15.57 (0.002) 15.54 15.54
RP magnitude 15.80 (0.004) 15.81 15.81
Pan g magnitude 15.50 (0.007)
Pan r magnitude 15.82 (0.004)
Pan i magnitude 16.13 (0.004)
Pan z magnitude 16.36 (0.005)
Pan y magnitude 16.52 (0.005)
E(B-V) 0.004

* 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.