All names: WDJ024208.44+111233.00, G 76-23, G 4-34, NLTT 8732, PM J02421+1112, TIC 377056497, J0242+1112, WD 0239+11, GALEX J024208.4+111231, WD 0239+109, Gaia DR2 25405350031335296, 02421+1112, LTT 10886, 0239+109, WD0239+109, EGGR 472, USNO-B1.0 1012-00024471, 2MASS J02420845+1112329, LSPM J0242+1112, WD 0239+10, Gaia DR3 25405350031335296, uvby98 980004034, Gaia EDR3 25405350031335296
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Ferrario et al. 2015 | Limoges et al. 2015 | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 02 42 08.63 (0.04) | 02 42 08.62 (0.05) | 02 42 08.62 (0.05) | 02 42 08.50 | 02 42 08.63 | 02 42 08.44 (0.04) | 02 42 08.62 | 02 42 08.21 | |||||||||||
Declination | 11 12 28.31 (0.04) | 11 12 28.46 (0.06) | 11 12 28.46 (0.06) | 11 12 32.00 | 11 12 28.31 | 11 12 33.01 (0.04) | 11 12 28.46 | 11 12 39.60 | |||||||||||
Spectral type | DAH | DAH | DAH | DA | DA | DAH | DA | DA+DB | DA | DA5.0 | DA6 | ||||||||
Effective temperature | [K] | 8283.0 (107) | 8333.0 (30) | 8299.3 (61) | 8245.0 | 10060.0 | 8510.0 (196) | 10060.0 (252) | 46859.0 (569) | 8239.0 (69) | |||||||||
log(g) | [cgs] | 8.41 (0.03) | 8.43 (0.006) | 8.42 (0.02) | 8.41 | 8.73 | 8.00 (0) | 8.73 (0.04) | 7.69 (0.05) | 8.41 (0.01) | |||||||||
Mass | [M☉] | 0.859 (0.02) | 0.871 (0.005) | 0.857 | 0.6 (0.1) | 1.06 (0.02) | 0.857 (0.01) | ||||||||||||
log(Luminosity) | [L☉] | -3.11 | |||||||||||||||||
Cooling age | [Gyr] | 2.3000 | 2.1350 | ||||||||||||||||
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] | 29.51 (0.05) | 29.51 (0.05) | 29.50 (0.07) | 29.50 (0.07) | 26.28 (1) | 29.50 (0.07) | 29.51 | 29.51 (0.05) | 29.50 (0.07) | |||||||||
Distance | [pc] | 33.89 (0.06) | 33.89 (0.06) | 33.90 (0.08) | 33.90 (0.08) | 38.05 (1) | 33.90 (0.08) | 45.90 (8) | 36.00 | 33.89 | 33.89 (0.06) | 33.90 (0.08) | |||||||
Composition | H | H | H | H | H | ||||||||||||||
Proper motion (right ascension) | [mas/yr] | 170.6408589 (0.05) | 170.7765367 (0.1) | 170.641 (0.05) | 170.7765367 | ||||||||||||||
Proper motion (declination) | [mas/yr] | -293.6406901 (0.05) | -293.4830089 (0.1) | -293.641 (0.05) | -293.4830089 | ||||||||||||||
Variability | |||||||||||||||||||
Magnetic | yes | yes | yes | ||||||||||||||||
Bd | [MG] | 0.725 (0.03) | 0.7 | ||||||||||||||||
Infrared excess (disk) | |||||||||||||||||||
Binarity | DDu | ||||||||||||||||||
B magnitude | 16.20 | ||||||||||||||||||
V magnitude | 16.18 | ||||||||||||||||||
R magnitude | 16.10 | ||||||||||||||||||
I magnitude | |||||||||||||||||||
J magnitude | 15.74 (0.01) | 15.58 (0.06) | |||||||||||||||||
H magnitude | 15.91 (0.2) | 15.91 (0.2) | |||||||||||||||||
K magnitude | 15.43 (0.2) | 15.43 (0.2) | |||||||||||||||||
u magnitude | |||||||||||||||||||
g magnitude | |||||||||||||||||||
r magnitude | |||||||||||||||||||
i magnitude | |||||||||||||||||||
z magnitude | |||||||||||||||||||
G magnitude | 16.10 (0.004) | 16.12 | 16.12 | 16.10 | 16.10 (0.003) | 16.12 | |||||||||||||
BP magnitude | 16.23 (0.004) | 16.22 | 16.22 | ||||||||||||||||
RP magnitude | 15.90 (0.005) | 15.90 | 15.90 | ||||||||||||||||
Pan g magnitude | 16.21 (0.003) | 16.21 (0.003) | |||||||||||||||||
Pan r magnitude | 16.16 (0.004) | 16.16 (0.004) | |||||||||||||||||
Pan i magnitude | 16.22 (0.002) | 16.22 (0.002) | |||||||||||||||||
Pan z magnitude | 16.33 (0.001) | 16.33 (0.002) | |||||||||||||||||
Pan y magnitude | 16.38 (0.007) | 16.38 (0.008) | |||||||||||||||||
E(B-V) | 0.001 |
* 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.