WD 2245+146

All names: USNO-B1.0 1049-00626651, SDSS J224741.46+145638.7, Gaia DR3 2732459327587247360, GALEX J224741.4+145638, SDSS J224741.45+145638.7, SDSS J224741.46+145638.8, WD 2245+146, [VV2006] J224741.5+145638, Gaia DR2 2732459327587247360, SDSS J224741.48+145637.9, 2245+146, Gaia EDR3 2732459327587247360

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Leggett et al. 2018 MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kulebi et al. 2009 Harris et al. 2003 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 22 47 41.49 (0.1) 22 47 41.46 22 47 41.49 (0.1) 22 47 41.46 22 47 41.49 22 47 41.46 (0.1) 22 47 41.46 22 47 41.21 22 47 41.46
Declination 14 56 37.62 (0.09) 14 56 38.74 14 56 37.66 (0.1) 14 56 38.80 14 56 37.62 14 56 38.85 (0.09) 14 56 38.75 14 56 39.12 14 56 38.76
Spectral type DAP3.2 DA DA DAH DAH DQ DAH DH DAH DAH hotDQ
Effective temperature [K] 15662.0 (1145) 15195.0 18000.0 13642.0 (476) 13827.0 (83) 14771.0 (69)
log(g) [cgs] 8.82 (0.06) 8.71 8.00 (0) 8.68 (0.04) 9.00 (0.003) 10.00 (0.007)
Mass [M] 1.116 (0.04) 1.057 1.019 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.7410 (0.2) 0.6186
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] 9.77 (0.1) 10.46 (0.4) 9.71 (0.2) 9.77 9.77 (0.1)
Distance [pc] 102.36 (1) 95.60 (4) 103.00 (2) 102.36 102.36 (1)
Composition H H
Proper motion (right ascension) [mas/yr] 25.8512866 (0.1) 25.86948462 (0.2) 25.851 (0.1) 23.8
Proper motion (declination) [mas/yr] -76.77497632 (0.1) -76.72848775 (0.2) -76.775 (0.1) -79.5
Variability
Magnetic yes yes yes yes
Bd [MG] 42.11 (3) 42.11 (3)
Infrared excess (disk)
Binarity
B magnitude 17.60
V magnitude
R magnitude 17.40
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.31 (0.009) 17.37 17.31 (0.009) 17.30 (0.03) 17.37 17.32 (0.02)
g magnitude 17.38 (0.005) 17.41 17.38 (0.005) 17.38 (0.02) 17.41 17.39 (0.02)
r magnitude 17.65 (0.006) 17.63 17.65 (0.006) 17.62 (0.01) 17.63 17.61 (0.01)
i magnitude 17.97 (0.008) 17.96 17.97 (0.008) 17.95 (0.02) 17.96 17.94 (0.02)
z magnitude 18.12 (0.02) 18.23 18.12 (0.02) 18.20 (0.03) 18.23 18.19 (0.03)
G magnitude 17.52 (0.008) 17.55 17.52 17.52 (0.003)
BP magnitude 17.48 (0.008) 17.45
RP magnitude 17.65 (0.02) 17.59
Pan g magnitude 17.42 (0.005)
Pan r magnitude 17.65 (0.004)
Pan i magnitude 17.99 (0.002)
Pan z magnitude 18.20 (0.01)
Pan y magnitude 18.28 (0.02)
E(B-V) 0.012

* 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.