WD 1202+308

All names: LAMOST J120525.03+303444.8, PG 1202+308, Ton 75, SDSS J120525.00+303444.6, WIRED J120525.01+303444.6, GALEX J120525.0+303444, WD 1202+308, 2MASS J12052498+3034449, LAMOST J120525.01+303444.6, SDSS J120525.01+303444.6, SDSS J120525.01+303444.7, TIC 359031368, CBS 52, PG 1202+309, Gaia DR3 4014289538234943360, Gaia EDR3 4014289538234943360, Gaia DR2 4014289538234943360

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H Gaia DR2 Stilism Guo et al. 2015 Gianninas et al. 2011 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 12 05 25.01 (0.05) 12 05 25.01 12 05 25.01 (0.09) 12 05 25.01 12 05 25.01 (0.05) 12 05 25.03 12 05 25.01
Declination 30 34 44.15 (0.04) 30 34 44.71 30 34 44.17 (0.05) 30 34 44.15 30 34 44.93 (0.04) 30 34 48.00 30 34 44.67
Spectral type DA DA DA DA DA DA1.7 DA DA DA
Effective temperature [K] 30015.0 (73) 26396.0 30218.0 (73) 29670.0 (465) 30889.0 (954) 29665.0 (70)
log(g) [cgs] 7.81 (0.02) 7.72 7.90 (0.02) 7.82 (0.06) 7.91 (0.03) 7.82 (0.02)
Mass [M] 0.55 (0.01) 0.501 0.59 (0.01) 0.55 (0.03) 0.6 (0.02) 0.56 (0.009)
log(Luminosity) [L] -0.77 (0.01)
Cooling age [Gyr] 0.0087 (0.0002) 0.0138
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] 5.37 (0.06) 5.45 (0.09) 5.37 5.37 (0.06)
Distance [pc] 186.29 (2) 183.41 (3) 114.00 186.29 186.29 (2)
Composition H H H
Proper motion (right ascension) [mas/yr] -3.140878324 (0.06) -3.015489204 (0.1) -3.141 (0.06)
Proper motion (declination) [mas/yr] -48.89464764 (0.04) -48.71808104 (0.1) -48.895 (0.04)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.30
V magnitude
R magnitude
I magnitude
J magnitude 16.71 (0.1)
H magnitude 16.27 (0.07)
K magnitude 17.25 (0.08)
u magnitude 15.64 (0.004) 15.64 (0.004) 15.69 15.71 (0.02)
g magnitude 15.89 (0.004) 15.89 (0.004) 15.87 15.89 (0.02)
r magnitude 16.36 (0.005) 16.36 (0.005) 16.32 (0.01)
i magnitude 16.69 (0.005) 16.69 (0.005) 16.73 (0.02)
z magnitude 17.03 (0.01) 17.03 (0.01) 17.02 (0.02)
G magnitude 16.12 (0.004) 16.14 16.12 16.12 (0.003)
BP magnitude 15.98 (0.004) 15.93
RP magnitude 16.40 (0.009) 16.39
Pan g magnitude 15.95 (0.003)
Pan r magnitude 16.36 (0.003)
Pan i magnitude 16.71 (0.007)
Pan z magnitude 17.01 (0.003)
Pan y magnitude 17.18 (0.01)
E(B-V) 0.009

* 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.