GD 154

All names: WDJ130957.68+350947.19, FBS 1307+354, J1309+3509, Gaia DR3 1474090607723007104, TIC 166009757, Ton 1559, LSPM J1309+3509, SDSS J130957.60+350947.2, NLTT 33108, CBS 366, 2MASS J13095769+3509471, FBS B 535, GD 154, V* BG CVn, Gaia DR2 1474090607723007104, WD 1307+354, PG 1307+354, WD 1308+35, USNO-B1.0 1251-00205643, WIRED J130957.59+350947.2, UCAC2 44140280, WD 1307+35, SDSS J130957.60+350947.3, EGGR 537, Gaia EDR3 1474090607723007104, GEN# +6.10060154, SDSS J130957.59+350947.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2025 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Plachy & Bradley 2013 Gianninas et al. 2011 Handler et al. 2005 Liebert et al. 2005 Pfeiffer et al. 1995 Robinson et al. 1978 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Research Corporation White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 13 09 57.38 (0.02) 13 09 57.60 13 09 57.39 (0.03) 13 09 57.38 13 09 57.68 (0.02) 13 09 57.39 13 09 56.78 13 09 57.60
Declination 35 09 47.54 (0.02) 35 09 47.23 35 09 47.53 (0.03) 35 09 47.54 35 09 47.19 (0.02) 35 09 47.53 35 09 32.76 35 09 47.26
Spectral type DA DA DA DA DA DA4.4 DA DAV DA5 DA DA
Effective temperature [K] 11026.0 (80) 11026.0 (81) 10940.0 11120.0 11430.0 (171) 11120.0 11180.0 (164) 11120.0 11120.0 10984.0 (59) 11180.0 10990.0 (29)
log(g) [cgs] 8.03 (0.008) 8.03 (0.008) 8.02 8.07 8.21 (0.05) 8.07 8.15 (0.05) 8.07 8.07 8.03 (0.007) 8.15 8.28 (0.02)
Mass [M☉] 0.619 (0.007) 0.621 (0.007) 0.615 0.74 (0.03) 0.7 (0.03) 0.618 (0.006) 0.767 (0.01)
log(Luminosity) [L☉] -2.72
Cooling age [Gyr] 0.4888 0.6310
log(H/He)
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] 20.83 (0.03) 20.86 (0.05) 20.83 20.83 (0.03) 20.86 (0.05)
Distance [pc] 48.01 (0.07) 47.94 (0.1) 44.00 45.00 48.01 48.01 (0.07) 47.94 (0.1)
Composition H H H
Proper motion (right ascension) [mas/yr] -226.1120388 (0.02) -226.0791104 (0.06) -226.112 (0.02) -226.079
Proper motion (declination) [mas/yr] 22.27953131 (0.02) 22.20950729 (0.06) 22.28 (0.02) 22.21
Variability VAR VAR VAR VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.51
V magnitude 15.30 15.30 15.33 15.30 15.30 15.33
R magnitude 15.20
I magnitude
J magnitude 15.34 (0.05)
H magnitude 15.40 (0.1)
K magnitude 14.99 (0.04)
u magnitude 15.67 (0.005) 15.67 (0.005) 15.67 (0.005) 15.69 (0.02)
g magnitude 15.29 (0.003) 15.29 (0.003) 15.29 (0.003) 15.32 (0.01)
r magnitude 15.39 (0.003) 15.39 (0.003) 15.39 (0.003) 15.40 (0.02)
i magnitude 15.58 (0.004) 15.58 (0.004) 15.58 (0.004) 15.60 (0.01)
z magnitude 15.82 (0.006) 15.82 (0.006) 15.82 (0.006) 15.82 (0.01)
G magnitude 15.32 (0.003) 15.34 15.32 15.32 (0.003) 15.34
BP magnitude 15.34 (0.003) 15.33 15.33
RP magnitude 15.31 (0.003) 15.30 15.30
Pan g magnitude 15.30 (0.006)
Pan r magnitude 15.42 (0.002)
Pan i magnitude 15.61 (0.004)
Pan z magnitude 15.81 (0.005)
Pan y magnitude 15.94 (0.006)
E(B-V) 0.002
Period #1 [s] 402.6 402.5 402.6 1186.1
Amplitude #1 [mma] 3.8 2.7
Period #2 [s] 1085.1 596.1 1084.0
Amplitude #2 [mma] 4.2 5.6
Period #3 [s] 1088.5 597.2 1088.6
Amplitude #3 [mma] 4.8 5.0
Period #4 [s] 1131.8 1125.1 1183.5
Amplitude #4 [mma] 4.5 4.6
Period #5 [s] 1156.7 1129.5 1186.5
Amplitude #5 [mma] 5.3 16.7
Period #6 [s] 1160.7 1133.4 1190.5
Amplitude #6 [mma] 6.3 6.3
Period #7 [s] 1186.0 1271.4 1092.1
Amplitude #7 [mma] 7.5 3.0
Period #8 [s] 1191.7
Amplitude #8 [mma] 9.1
Period #9 [s] 1238.2
Amplitude #9 [mma] 5.0
Period #10 [s] 1244.2
Amplitude #10 [mma] 4.8

* 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.