All names: UCAC2 44305820, LSPM J0846+3538, KUV 08436+3550, 2MASS J08464443+3538337, 1SWASP J084644.40+353833.7, Gaia DR2 717393648787722624, WD 0843+358, GALEX J084644.3+353833, WDJ084644.41+353833.56, Ton 949, USNO-B1.0 1256-00166538, WD 0843+36, PM J08467+3538, J0846+3538, GEN# +6.10060095, CNS5 2165, Gaia EDR3 717393648787722624, TIC 165892318, GD 95, NLTT 20211, Gaia DR3 717393648787722624, 08467+3538, CBS 84
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Coutu et al. 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Sion et al. 2014 | Giammichele et al. 2012 | Sion et al. 1990 | Liebert et al. 1987 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 46 44.21 (0.02) | 08 46 44.21 (0.03) | 08 46 44.41 | 08 46 44.21 (0.03) | 08 46 44.40 | 08 46 44.21 | 08 46 44.41 (0.02) | 08 46 44.21 | 08 46 44.86 | |||||||||
Declination | 35 38 32.49 (0.01) | 35 38 32.53 (0.02) | 35 38 33.56 | 35 38 32.53 (0.02) | 35 38 31.20 | 35 38 32.49 | 35 38 33.56 (0.01) | 35 38 32.53 | 35 38 46.68 | |||||||||
Spectral type | DZA | DZA | DZA | DZ | DZ | DZ6 | DZA | DZ | DZ | DZ | DZ | |||||||
Effective temperature | [K] | 9146.0 (87) | 8563.0 (20) | 9198.2 (30) | 8791.0 (204) | 8580.0 (126) | 9041.0 | 9041.0 (419) | 8200.0 | 8200.0 | 8425.0 (30) | |||||||
log(g) | [cgs] | 8.27 (0.02) | 8.07 (0.003) | 8.15 (0.009) | 8.16 | 8.00 (0) | (0) | 7.99 (0.005) | ||||||||||
Mass | [M☉] | 0.751 (0.01) | 0.623 (0.003) | 0.6773 | 0.58 (0.1) | 0.58 (0) | 0.57 (0.004) | |||||||||||
log(Luminosity) | [L☉] | -3.11 | -3.02 | |||||||||||||||
Cooling age | [Gyr] | 1.0900 | 1.1000 | 0.8600 | ||||||||||||||
log(H/He) | -4.0 | <-5.2721 | -4.6 | -3.0 | ||||||||||||||
log(C/He) | -6.0 | |||||||||||||||||
log(Ca/He) | -8.69 | -8.6909 (0.1) | -8.56 | -9.2 | ||||||||||||||
log(Ca/H) | ||||||||||||||||||
log(N/He) | ||||||||||||||||||
log(O/He) | ||||||||||||||||||
log(Na/He) | ||||||||||||||||||
log(Mg/He) | -6 | |||||||||||||||||
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) | -8.3 | |||||||||||||||||
log(Co/He) | ||||||||||||||||||
log(Ni/He) | ||||||||||||||||||
log(Cu/He) | ||||||||||||||||||
log(Zn/He) | ||||||||||||||||||
log(Ga/He) | ||||||||||||||||||
log(Ge/He) | ||||||||||||||||||
log(Sr/He) | ||||||||||||||||||
Parallax | [mas] | 40.72 (0.03) | 40.72 (0.03) | 40.68 (0.05) | 40.68 (0.05) | 40.68 | 40.68 (0.05) | 40.72 | 40.72 (0.03) | 40.68 (0.05) | ||||||||
Distance | [pc] | 24.56 (0.02) | 24.56 (0.02) | 24.58 (0.03) | 24.58 (0.03) | 24.58 (0.03) | 24.58 (0.03) | 25.50 (0.5) | 23.10 | 27.00 (2) | 24.56 | 24.56 (0.02) | 24.58 (0.03) | |||||
Composition | He | He | He | He | He | |||||||||||||
Proper motion (right ascension) | [mas/yr] | -156.6462242 (0.03) | -156.6077264 (0.07) | -156.646 (0.03) | -156.6077264 | |||||||||||||
Proper motion (declination) | [mas/yr] | -66.79048971 (0.02) | -66.69456611 (0.05) | -66.79 (0.02) | -66.69456611 | |||||||||||||
Variability | ||||||||||||||||||
Magnetic | ||||||||||||||||||
Bd | [MG] | |||||||||||||||||
Infrared excess (disk) | ||||||||||||||||||
Binarity | ||||||||||||||||||
B magnitude | 15.03 | |||||||||||||||||
V magnitude | ||||||||||||||||||
R magnitude | 14.40 | |||||||||||||||||
I magnitude | ||||||||||||||||||
J magnitude | 14.66 (0.004) | 14.68 | 14.68 (0.04) | |||||||||||||||
H magnitude | 14.63 (0.07) | 14.63 | 14.63 (0.07) | |||||||||||||||
K magnitude | 14.59 (0.09) | 14.59 | 14.59 (0.09) | |||||||||||||||
u magnitude | 15.06 (0.004) | 15.06 (0.004) | ||||||||||||||||
g magnitude | 14.75 | 14.73 (0.003) | ||||||||||||||||
r magnitude | 14.80 | 14.80 (0.003) | ||||||||||||||||
i magnitude | 14.93 | 14.93 (0.003) | ||||||||||||||||
z magnitude | 15.14 | 15.12 (0.005) | ||||||||||||||||
G magnitude | 14.74 (0.001) | 14.76 | 14.76 | 14.74 | 14.74 (0.003) | 14.76 | ||||||||||||
BP magnitude | 14.81 (0.001) | 14.80 | 14.80 | |||||||||||||||
RP magnitude | 14.64 (0.001) | 14.64 | 14.64 | |||||||||||||||
Pan g magnitude | 14.77 (0.003) | 14.77 (0.004) | ||||||||||||||||
Pan r magnitude | 14.83 (0.002) | 14.83 (0.002) | ||||||||||||||||
Pan i magnitude | 14.95 (0.002) | 14.95 (0.002) | ||||||||||||||||
Pan z magnitude | 15.13 (0.003) | 15.13 (0.003) | ||||||||||||||||
Pan y magnitude | 15.23 (0.007) | 15.23 (0.007) | ||||||||||||||||
E(B-V) | 0.000 |
* Constant surface field
Spectra without link are available upon request
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.