WD 0304+154

All names: WDJ030704.24+154050.23, J0307+1540, Gaia DR2 31322547949728256, LSPM J0307+1540N, Gaia EDR3 31322547949728256, LP 471-52, TIC 640215257, NLTT 9917, WD 0304+154, ** LDS 3454B, Gaia DR3 31322547949728256, USNO-B1.0 1056-00041908, WDS J03071+1540B

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 MWDD H MWDD HE Gaia DR2 Tremblay et al. 2017 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 03 07 04.33 (0.3) 03 07 04.33 (0.4) 03 07 04.33 03 07 04.24 (0.3) 03 07 04.33 03 07 05.23
Declination 15 40 45.69 (0.3) 15 40 45.83 (0.4) 15 40 45.69 15 40 50.20 (0.3) 15 40 45.83 15 40 30.72
Spectral type DC: DC: DC: DC: DA DC DC:
Effective temperature [K] 4094.0 (41) 4158.0 3898.0 4130.0 (216)
log(g) [cgs] 7.73 (0.04) 7.76 7.47 7.79 (0.1)
Mass [M] 0.425 (0.03) 0.439 0.302 0.459 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 6.4500 6.1850 3.8260
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] 17.18 (0.3) 17.30 (0.4) 17.30 (0.4) 17.18 17.18 (0.3) 17.30 (0.4)
Distance [pc] 58.21 (1) 57.80 (1) 57.81 (1) 58.21 58.21 (1) 57.81 (1)
Composition H
Proper motion (right ascension) [mas/yr] 82.68679461 (0.4) 81.69382664 (0.8) 82.687 (0.4) 81.69382664
Proper motion (declination) [mas/yr] -282.0015676 (0.4) -283.8057422 (0.8) -282.002 (0.4) -283.8057422
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity yes
B magnitude 20.20
V magnitude 20.20 (0.1)
R magnitude 18.20
I magnitude
J magnitude 17.72 (0.03)
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 19.24 (0.07) 19.28 19.11 (0.01) 19.24 19.24 (0.004) 19.28
BP magnitude 19.92 (0.07) 19.94 19.94
RP magnitude 18.55 (0.03) 18.45 18.45
Pan g magnitude 20.11 (0.01) 20.11 (0.01)
Pan r magnitude 19.17 (0.02) 19.17 (0.02)
Pan i magnitude 18.79 (0.008) 18.79 (0.01)
Pan z magnitude 18.67 (0.01) 18.67 (0.009)
Pan y magnitude 18.49 (0.02) 18.49 (0.01)
E(B-V) 0.002

* 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.