WD 0801+228

All names: TIC 67378262, LSPM J0804+2239, 2MASS J08044064+2239502, SDSS J080440.63+223948.7, Gaia DR2 680099824985004288, PSO J121.1693+22.6624, NLTT 18891, WDJ080440.63+223949.68, Gaia EDR3 680099824985004288, J0804+2239, Gaia DR3 680099824985004288, LP 366-38, USNO-B1.0 1126-00180955, SDSS J080440.63+223948.6, WD 0801+228

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 Caron et al. 2023 Bergeron et al. 2022 McCleery et al. 2020 Blouin et al. 2018 Blouin et al. 2019 MWDD H Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 08 04 40.63 (0.09) 08 04 40.63 (0.1) 08 04 40.63 (0.1) 08 04 40.63 08 04 40.63 (0.09) 08 04 40.63 08 04 40.78
Declination 22 39 44.50 (0.07) 22 39 44.66 (0.07) 22 39 44.66 (0.07) 22 39 44.50 22 39 49.68 (0.07) 22 39 44.66 22 39 45.00
Spectral type DZ DZ DZ DZ DZ DZ DZ DZ: DZ DZ
Effective temperature [K] 5173.0 (67) 4920.0 (26) 4985.0 (27) 5122.6 (54) 4970.0 (100) 4970.0 (100) 5222.0 5003.0 (33)
log(g) [cgs] 7.99 (0.05) 7.91 (0.009) 7.95 (0.05) 7.98 (0.05) 7.98 (0.05) 8.01 7.97 (0.02)
Mass [M] 0.56 (0.03) 0.515 (0.006) 0.542 (0.004) 0.558 (0.03) 0.587 0.549 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 5.3000 5.3270 5.9000 (0.6) 5.8700 (0.6) 4.6700
log(H/He) -1.25 -1.31 -1.6 (0.2) -1.6
log(C/He)
log(Ca/He) -10.0 (0.1) -10.0
log(Ca/H)
log(N/He)
log(O/He)
log(Na/He) -11.0 (0.2)
log(Mg/He)
log(Al/He)
log(Si/He)
log(P/He)
log(S/He)
log(Cl/He)
log(Sc/He)
log(Ti/He)
log(V/He)
log(Cr/He)
log(Mn/He)
log(Fe/He) -9.8 (0.2)
log(Co/He)
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 25.37 (0.1) 25.37 (0.1) 25.28 (0.1) 25.28 (0.1) 25.28 (0.1) 25.28 (0.1) 25.28 (0.1) 25.37 25.37 (0.1) 25.28 (0.1)
Distance [pc] 39.41 (0.2) 39.42 (0.2) 39.56 (0.2) 39.56 (0.2) 39.56 (0.2) 39.56 (0.2) 39.56 (0.2) 39.41 39.41 (0.2) 39.56 (0.2)
Composition He He He He He
Proper motion (right ascension) [mas/yr] 1.810602686 (0.1) 1.644112114 (0.2) 1.811 (0.1) 1.644112114
Proper motion (declination) [mas/yr] -324.0000977 (0.08) -324.0396324 (0.1) -324.0 (0.08) -324.0396324
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.00
V magnitude
R magnitude 17.50
I magnitude
J magnitude 16.71 (0.04) 16.71 (0.04) 16.88 (0.2) 16.71 (0.04)
H magnitude 16.92 (0.04) 16.92 (0.04) 16.69 (0.01)
K magnitude 17.29 (0.06) 17.29 (0.06) 17.29 (0.06)
u magnitude 19.82 (0.03) 19.73 (0.03) 19.78 (0.03) 19.78 (0.03) 19.73
g magnitude 18.30 (0.03) 18.16 (0.004) 18.28 (0.007) 18.30
r magnitude 17.59 (0.03) 17.61 (0.004) 17.60 (0.006) 17.59
i magnitude 17.39 (0.03) 17.41 (0.005) 17.39 (0.006) 17.39
z magnitude 17.33 (0.03) 17.36 (0.005) 17.31 (0.01) 17.33
G magnitude 17.66 (0.01) 17.67 17.67 17.66 17.66 (0.003) 17.67
BP magnitude 18.08 (0.01) 18.09 18.09
RP magnitude 17.08 (0.007) 17.06 17.06
Pan g magnitude 18.16 (0.004) 18.16 (0.004) 18.16 (0.004)
Pan r magnitude 17.61 (0.003) 17.61 (0.004) 17.61 (0.004)
Pan i magnitude 17.41 (0.005) 17.41 (0.005) 17.41 (0.005)
Pan z magnitude 17.36 (0.006) 17.36 (0.005) 17.36 (0.005)
Pan y magnitude 17.28 (0.01) 17.28 (0.009) 17.28 (0.009)
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.