WD 1507+220

All names: SDSS J150939.97+215015.6, TIC 351345015, USNO-B1.0 1118-00272856, LAMOST J150940.02+215014.0, J1509+2150, Gaia EDR3 1261751715280478848, GALEX J150940.0+215014, PG 1507+220, WD 1507+220, SDSS J150939.97+215015.5, WDJ150939.99+215015.77, Gaia DR2 1261751715280478848, Gaia DR3 1261751715280478848, 2MASS J15093999+2150158

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Kilic et al. 2020 MWDD H Gaia DR2 Stilism Guo et al. 2015 Gianninas et al. 2011 Koester et al. 2009 Liebert et al. 2005 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 15 09 39.91 (0.03) 15 09 39.91 (0.04) 15 09 39.91 15 09 39.99 (0.03) 15 09 39.91 15 09 40.06
Declination 21 50 15.27 (0.03) 21 50 15.29 (0.03) 21 50 15.27 21 50 15.77 (0.03) 21 50 15.29 21 50 08.52
Spectral type DA DA DA DA DA DA DA2.5 DA3
Effective temperature [K] 20357.0 (216) 20357.0 (216) 18494.0 20540.0 (331) 19872.0 (27) 19340.0 (312) 19496.0 (226)
log(g) [cgs] 7.95 (0.009) 7.95 (0.009) 7.84 7.91 (0.05) 7.75 (0.005) 7.91 (0.05) 7.90 (0.01)
Mass [M] 0.598 (0.007) 0.596 (0.007) 0.536 0.58 (0.03) 0.57 (0.03) 0.567 (0.008)
log(Luminosity) [L] -1.61
Cooling age [Gyr] 0.0680 0.0851
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] 13.87 (0.04) 13.85 (0.04) 13.87 13.87 (0.04) 13.85 (0.04)
Distance [pc] 72.09 (0.2) 72.20 (0.2) 78.00 75.00 72.09 72.09 (0.2) 72.20 (0.2)
Composition H H H
Proper motion (right ascension) [mas/yr] -73.20265924 (0.04) -73.10880287 (0.08) -73.203 (0.04) -73.10880286
Proper motion (declination) [mas/yr] -31.1611599 (0.04) -31.13205243 (0.08) -31.161 (0.04) -31.13205243
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.00 15.00
V magnitude 15.05
R magnitude 15.00
I magnitude
J magnitude 15.45 (0.01)
H magnitude 15.53 (0.02)
K magnitude 15.70 (0.06)
u magnitude 14.97 (0.005) 14.80 (0.004)
g magnitude 14.94 (0.004) 14.77 (0.003)
r magnitude 16.44 (0.01) 15.15 (0.003)
i magnitude 15.54 (0.005) 15.44 (0.004)
z magnitude 15.65 (0.007) 15.74 (0.006)
G magnitude 14.98 (0.002) 15.00 14.98 14.98 (0.003) 15.00
BP magnitude 14.90 (0.002) 14.87 14.87
RP magnitude 15.16 (0.002) 15.15 15.15
Pan g magnitude 14.83 (0.003)
Pan r magnitude 15.18 (0.001)
Pan i magnitude 15.47 (0.002)
Pan z magnitude 15.74 (0.003)
Pan y magnitude 15.91 (0.007)
E(B-V) 0.013

* 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.