PG 1609+045

All names: WIRED J161149.06+041937.8, WISEA J161149.05+041937.7, TIC 462291039, USNO-B1.0 0943-00252419, SDSS J161149.05+041937.8, SDSS J161149.06+041937.9, UCAC2 33238041, Gaia DR2 4437271867601913472, PG 1609+045, SDSS J161149.06+041937.8, UCAC4 472-054272, Gaia DR3 4437271867601913472, Gaia EDR3 4437271867601913472, WISE J161149.06+041937.6, 2MASS J16114906+0419377, WD 1609+044, GALEX J161149.0+041937

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 16 11 49.04 (0.03) 16 11 49.06 16 11 49.04 (0.05) 16 11 49.04 16 11 49.07 (0.03) 16 11 48.22 16 11 49.06
Declination 04 19 37.60 (0.04) 04 19 37.84 04 19 37.61 (0.04) 04 19 37.60 04 19 37.88 (0.04) 04 19 49.44 04 19 37.87
Spectral type DA DA DA DA DA1.7 DA1.5 DA DA
Effective temperature [K] 30324.0 (53) 25626.0 29830.0 (433) 29593.0 (22) 29840.0 (513) 30018.0 (89)
log(g) [cgs] 7.87 (0.01) 7.71 7.92 (0.05) 7.79 (0.005) 7.91 (0.02) 7.88 (0.02)
Mass [M] 0.58 (0.01) 0.496 0.6 (0.02) 0.598 (0.01) 0.587 (0.009)
log(Luminosity) [L] -0.79 (0.01)
Cooling age [Gyr] 0.0085 (0.0002) 0.0152
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] 8.57 (0.04) 8.57 (0.06) 8.57 8.57 (0.04)
Distance [pc] 116.69 (0.6) 116.64 (0.8) 118.00 116.69 116.69 (0.6)
Composition H H H
Proper motion (right ascension) [mas/yr] -24.76415854 (0.04) -24.79073071 (0.1) -24.764 (0.04)
Proper motion (declination) [mas/yr] -17.49542054 (0.04) -17.48879495 (0.07) -17.495 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.01 (0.02)
V magnitude 15.22 15.17 (0.02)
R magnitude 15.36 (0.08)
I magnitude
J magnitude 15.74 (0.08)
H magnitude 16.11 (0.2)
K magnitude 15.71 (0.2)
u magnitude 14.72 (0.005) 14.72 (0.005) 14.72 (0.02)
g magnitude 14.93 (0.004) 14.94 (0.004) 14.97 (0.01)
r magnitude 15.41 (0.005) 15.41 (0.005) 15.40 (0.02)
i magnitude 15.76 (0.005) 15.76 (0.005) 15.74 (0.01)
z magnitude 16.08 (0.008) 16.08 (0.008) 16.10 (0.02)
G magnitude 15.18 (0.002) 15.20 15.18 15.18 (0.003)
BP magnitude 15.05 (0.002) 14.98
RP magnitude 15.45 (0.002) 15.44
Pan g magnitude 15.02 (0.002)
Pan r magnitude 15.43 (0.004)
Pan i magnitude 15.78 (0.003)
Pan z magnitude 16.05 (0.002)
Pan y magnitude 16.25 (0.009)
E(B-V) 0.026

* 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.