PG 1632+177

All names: 1632+177, TIC 148120303, Gaia DR3 4466388790929771904, [TFW97] J163441.74+173634.60, Gaia EDR3 4466388790929771904, PG, UCAC4 539-058414, 2MASS J16344185+1736340, WISE J163441.90+173633.8, PG 1632+177, LAMOST J163441.84+173634.1, PG1632+177, WISEA J163441.90+173633.7, SDSS J163441.87+173633.9, J1634+1736, WD 1632+177, WDJ163441.85+173634.09, Gaia DR2 4466388790929771904

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 Kilic et al. 2020 McCleery et al. 2020 Leggett et al. 2018 Gaia DR2 Stilism Holberg et al. 2016 Guo et al. 2015 Limoges et al. 2015 Sion et al. 2014 Giammichele et al. 2012 Gianninas et al. 2011 Holberg et al. 2008 Farihi et al. 2008 Liebert et al. 2005 Zuckerman et al. 2003 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 16 34 41.93 (0.01) 16 34 41.93 (0.02) 16 34 41.93 (0.02) 16 34 41.76 16 34 41.93 16 34 41.85 (0.01) 16 34 41.93 16 34 41.02
Declination 17 36 33.57 (0.01) 17 36 33.58 (0.02) 17 36 33.58 (0.02) 17 36 32.40 17 36 33.57 17 36 34.09 (0.01) 17 36 33.58 17 36 27.00
Spectral type DAZ DAZ DAZ DAZ DAZ DA5.2 DAZ DA DA DAZ5.0 DAZ DA DA DAZ DA DA4.9 DA5
Effective temperature [K] 10149.0 (10) 9754.0 (69) 9669.0 (145) 10149.0 (10) 9772.7 (21) 9711.0 (188) 9986.0 (145) 18596.0 (154) 10030.0 (142) 10225.0 10225.0 (145) 10220.0 (145) 10100.0 10100.0 (143) 10070.0 9769.0 (25)
log(g) [cgs] 7.24 (0.002) 7.25 (0.02) 7.17 (0.02) 7.25 (0.002) 7.26 (0.006) 7.09 (0.03) 7.49 (0.04) 7.33 (0.03) 7.79 (0.05) 7.73 (0.04) 8.04 (0.04) 7.96 (0.04) 7.99 7.17 (0.004)
Mass [M] 0.273 (0.001) 0.305 (0.004) 0.253 (0.007) 0.275 (0.001) 0.235 (0.009) 0.35 (0.01) 0.34 (0.01) 0.48 (0.02) 0.46 (0.02) 0.62 (0.03) 0.58 (0.03) 0.256 (0.002)
log(Luminosity) [L] -2.70 -2.64 -2.78
Cooling age [Gyr] 0.2300 0.2720 (0.02) 0.3500 0.4100 0.6166
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -10.75 -10.748
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] 39.03 (0.02) 39.03 (0.02) 39.05 (0.03) 39.05 (0.03) 37.06 (0.8) 39.05 (0.03) 39.03 39.03 (0.02) 39.05 (0.03)
Distance [pc] 25.62 (0.01) 25.62 (0.01) 25.61 (0.02) 25.61 (0.02) 26.98 (0.6) 25.61 (0.02) 21.41 (0.2) 19.00 (0.9) 18.70 (0.7) 15.00 15.99 15.00 25.62 25.62 (0.01) 25.61 (0.02)
Composition H H H H H H H H H
Proper motion (right ascension) [mas/yr] 77.91643335 (0.02) 77.81049824 (0.04) 77.916 (0.02) 77.81049824
Proper motion (declination) [mas/yr] -32.69544293 (0.02) -32.66488959 (0.04) -32.695 (0.01) -32.66488959
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 13.36 (0.03)
V magnitude 13.11 13.08 13.05 13.05 13.14 (0.02)
R magnitude 13.34 (0.07)
I magnitude
J magnitude 13.05 (0.02) 13.05 (0.02)
H magnitude 12.99 (0.03) 12.99 (0.03)
K magnitude 13.08 (0.03) 13.08 (0.03)
u magnitude 14.37 (0.005) 14.44 (0.005) 13.87 (0.003)
g magnitude 13.41 (0.002) 13.36 (0.003)
r magnitude 13.39 (0.002) 13.85 (0.008)
i magnitude 13.52 (0.002) 13.63 (0.003)
z magnitude 13.86 (0.005) 13.66 (0.004)
G magnitude 13.14 (0.0006) 13.16 13.16 13.14 13.14 (0.003) 13.16
BP magnitude 13.19 (0.0006) 13.19 13.19
RP magnitude 13.05 (0.0005) 13.05 13.05
Pan g magnitude 13.40 (0) 13.40 (0.03)
Pan r magnitude 13.47 (0) 13.47 (0.03)
Pan i magnitude 14.23 (0.1) 14.23 (0.1)
Pan z magnitude 13.53 (0.001) 13.53 (0.001)
Pan y magnitude 13.65 (0.002) 13.65 (0.002)
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.