WD 1225+006

All names: J1228+0022, Gaia DR2 3696778892558087552, 12281+0022, HE1225+0038, HE 1225+0038, WDJ122807.73+002219.62, PM J12281+0022, 2MASS J12280771+0022196, Gaia EDR3 3696778892558087552, TIC 377261756, SDSS J122807.72+002219.5, SDSS J122807.73+002219.5, Gaia DR3 3696778892558087552, WD 1225+006, USNO-B1.0 0903-00211190

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 Kilic et al. 2020 McCleery et al. 2020 MWDD H Gaia DR2 Stilism Limoges et al. 2015 Koester et al. 2009 Jura et al. 2007 Koester et al. 2005 Koester et al. 2001 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 12 28 07.67 (0.03) 12 28 07.67 (0.04) 12 28 07.67 (0.04) 12 28 07.70 12 28 07.67 12 28 07.73 (0.03) 12 28 07.67 12 28 07.68
Declination 00 22 21.12 (0.02) 00 22 21.07 (0.02) 00 22 21.07 (0.02) 00 22 20.00 00 22 21.12 00 22 19.62 (0.02) 00 22 21.07 00 22 18.48
Spectral type DAZ DAZ DA DA DAZ DA DA DA DA DA DAZ DA
Effective temperature [K] 9323.0 (38) 9300.0 (79) 9346.0 (25) 9323.0 (38) 9291.9 (33) 9244.0 9390.0 (134) 9383.0 (5) 9400.0 9470.0 (7) 9246.0 (35)
log(g) [cgs] 8.00 (0.006) 7.98 (0.02) 8.00 (0.004) 7.99 (0.006) 7.98 (0.01) 7.98 7.97 (0.05) 8.09 (0.005) 8.10 8.12 (0.02) 7.98 (0.006)
Mass [M] 0.595 (0.005) 0.588 (0.01) 0.595 (0.004) 0.595 (0.005) 0.586 0.58 (0.03) 0.67 0.585 (0.005)
log(Luminosity) [L] -2.92
Cooling age [Gyr] 0.7500 0.7183
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H) -9.7
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] 30.95 (0.03) 30.95 (0.03) 30.94 (0.04) 30.94 (0.04) 30.94 (0.04) 30.95 30.95 (0.03) 30.94 (0.04)
Distance [pc] 32.31 (0.03) 32.31 (0.03) 32.32 (0.04) 32.32 (0.05) 32.32 (0.05) 33.10 (1) 29.00 32.31 32.31 (0.03) 32.32 (0.05)
Composition H H H H H H
Proper motion (right ascension) [mas/yr] -53.61280046 (0.04) -53.38997312 (0.1) -53.613 (0.04) -53.38997312
Proper motion (declination) [mas/yr] 93.34134352 (0.03) 93.25853054 (0.06) 93.341 (0.03) 93.25853054
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.09 15.20
V magnitude 14.80
R magnitude 15.10
I magnitude
J magnitude 14.74 (0.004) 14.74 (0.004)
H magnitude 14.68 (0.005) 14.68 (0.006)
K magnitude 14.72 (0.009) 14.72 (0.009)
u magnitude 15.36 (0.004) 15.37 (0.004) 15.37 (0.004)
g magnitude 14.97 (0.004) 14.97 (0.004)
r magnitude 15.02 (0.004) 15.02 (0.004)
i magnitude 15.10 (0.004) 15.10 (0.004)
z magnitude 15.27 (0.006) 15.27 (0.006)
G magnitude 14.94 (0.001) 14.96 14.96 14.94 14.94 (0.003) 14.96
BP magnitude 15.02 (0.001) 15.01 15.01
RP magnitude 14.80 (0.001) 14.81 14.81
Pan g magnitude 14.99 (0.005) 14.99 (0.004)
Pan r magnitude 15.03 (0.002) 15.03 (0.002)
Pan i magnitude 15.12 (0.001) 15.12 (0.001)
Pan z magnitude 15.27 (0.002) 15.27 (0.002)
Pan y magnitude 15.37 (0.007) 15.37 (0.007)
E(B-V) 0.001

* 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.