PG 1157+004

All names: MGC 27205, PM J11598+0007, LAMOST J115952.10+000751.5, WDJ115952.05+000751.87, GALEX J115952.0+000751, Gaia DR3 3891115064506627840, UCAC4 451-052673, LAMOST J115952.07+000751.5, J1159+0007, Gaia DR2 3891115064506627840, 11598+0007, FBS 1157+004, UCAC3 181-116663, Gaia EDR3 3891115064506627840, SDSS J115952.07+000751.5, SDSS J115952.08+000751.6, [DWS97] Vir 1, WD 1157+004, PG 1157+004, 2MASS J11595203+0007517, TIC 289512725

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Hardy et al. 2023a Caron et al. 2023 Kilic et al. 2020 McCleery et al. 2020 MWDD H Gaia DR2 Stilism Guo et al. 2015 Limoges et al. 2015 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 11 59 52.12 (0.04) 11 59 52.12 (0.06) 11 59 52.12 (0.06) 11 59 52.12 11 59 52.05 (0.04) 11 59 52.12 11 59 51.77
Declination 00 07 51.25 (0.05) 00 07 51.27 (0.03) 00 07 51.27 (0.03) 00 07 51.25 00 07 51.86 (0.05) 00 07 51.27 00 07 47.64
Spectral type DA DA DA DA DA DA DA DA DA DA: DA DAH
Effective temperature [K] 9541.0 (50) 9420.0 (93) 9705.8 (126) 8715.0 (30) 8566.0 (44) 9388.8 (52) 9178.0 9640.0 (805) 9646.0 (78)
log(g) [cgs] 8.67 (0.007) 8.65 (0.02) 8.71 (0.07) 8.47 (0.005) 8.42 (0.007) 8.66 (0.01) 8.62 8.00 (0) 8.69 (0.01)
Mass [M] 1.027 (0.005) 1.015 (0.01) 1.051244930783301 (0.08) 0.88 (0.004) 0.849 (0.006) 0.996 0.6 (0.1) 1.037 (0.008)
log(Luminosity) [L] -2.89
Cooling age [Gyr] 2.1300 2.3410
log(H/He) -2.0 -2.5
log(C/He)
log(Ca/He)
log(Ca/H)
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] 35.33 (0.06) 35.33 (0.06) 35.45 (0.07) 35.45 (0.07) 35.45 (0.07) 35.33 35.33 (0.06) 35.45 (0.07)
Distance [pc] 28.31 (0.04) 28.30 (0.05) 28.21 (0.06) 28.21 (0.06) 28.21 (0.06) 66.90 (1e+01) 28.31 28.31 (0.04) 28.21 (0.06)
Composition H He H H H
Proper motion (right ascension) [mas/yr] 67.12935721 (0.06) 67.20897894 (0.1) 67.129 (0.06) 67.20897894
Proper motion (declination) [mas/yr] -38.26644142 (0.05) -38.42389936 (0.06) -38.266 (0.05) -38.42389936
Variability
Magnetic yes
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.98 (0.1)
V magnitude 15.73 (0.09)
R magnitude
I magnitude
J magnitude 15.56 (0.007) 15.62 15.62 (0.05)
H magnitude 15.54 (0.01) 15.37 15.37 (0.09)
K magnitude 15.53 (0.02) 15.54 15.54 (0.2)
u magnitude 16.02 (0.005) 16.00 16.00 (0.006) 15.99 (0.005)
g magnitude 15.75 15.75 (0.004) 15.73 (0.003)
r magnitude 15.81 15.80 (0.004) 15.80 (0.003)
i magnitude 15.87 15.86 (0.005) 15.85 (0.003)
z magnitude 16.01 16.00 (0.007) 16.04 (0.008)
G magnitude 15.71 (0.002) 15.73 15.73 15.71 15.71 (0.003) 15.73
BP magnitude 15.79 (0.002) 15.77 15.77
RP magnitude 15.57 (0.002) 15.58 15.58
Pan g magnitude 15.77 (0.003) 15.77 (0.003)
Pan r magnitude 15.82 (0.004) 15.82 (0.003)
Pan i magnitude 15.89 (0.003) 15.89 (0.003)
Pan z magnitude 16.02 (0.004) 16.02 (0.004)
Pan y magnitude 16.13 (0.008) 16.13 (0.008)
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.