All names: Cl* Melotte 25 LEID 75, WDJ043344.96+124240.36, FB 39, HZ 7, KUV 04310+1236, WD 0431+12, EGGR 39, BPS BS 17574-0024, Gaia DR3 3306722607119077120, Cl* Melotte 25 PELS 75, WD 0431+125, TIC 245858638, CSI+12-04310, GSC 00677-00394, GEN# +5.20251722, UBV M 41449, uvby98 520251722, WD 0431+126, Cl* Melotte 25 REID 330, UBV 4386, Cl* Melotte 25 HAN 573, USNO-B1.0 1027-00057168, Gaia EDR3 3306722607119077120, Cl* Melotte 25 VA 722, Gaia DR2 3306722607119077120, GCRV 55196, VVO 399, UCAC4 514-007931, 2MASS J04334494+1242403, Cl* Melotte 25 HZ 7
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 33 45.07 (0.03) | 04 33 45.07 (0.05) | 04 33 45.07 | 04 33 44.96 (0.03) | 04 33 45.07 | 04 33 47.66 | |||||||
| Declination | 12 42 40.13 (0.02) | 12 42 40.13 (0.03) | 12 42 40.13 | 12 42 40.36 (0.02) | 12 42 40.13 | 12 42 37.80 | |||||||
| Spectral type | DA | DA | DA | DA2.3 | DA2 | ||||||||
| Effective temperature | [K] | 20799.0 | 20844.0 (283) | 21890.0 (346) | 21374.0 (28) | 22194.0 (186) | |||||||
| log(g) | [cgs] | 8.10 | 8.05 (0.09) | 8.11 (0.05) | 7.97 (0.005) | 8.17 (0.007) | |||||||
| Mass | [M☉] | 0.685 | 0.653 (0.05) | 0.69 (0.03) | 0.728 (0.006) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0751 | |||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(C/H) | <-8.30 | ||||||||||||
| log(N/H) | |||||||||||||
| log(O/H) | |||||||||||||
| log(Na/H) | |||||||||||||
| log(Mg/H) | |||||||||||||
| log(Al/H) | |||||||||||||
| log(Si/H) | -8.1 (0.1) | ||||||||||||
| 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] | 21.13 (0.03) | 21.14 (0.06) | 21.13 | 21.13 (0.03) | 21.14 (0.06) | 23.00 (5) | ||||||
| Distance | [pc] | 47.32 (0.08) | 47.30 (0.1) | 49.00 | 47.32 | 47.32 (0.08) | 47.30 (0.1) | 43.48 (9) | |||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 98.99226815 (0.04) | 99.02193703 (0.1) | 98.992 (0.04) | 99.02193703 | ||||||||
| Proper motion (declination) | [mas/yr] | -14.39769733 (0.03) | -14.31380496 (0.07) | -14.398 (0.03) | -14.31380496 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 14.15 | ||||||||||||
| V magnitude | 14.23 (0.03) | 14.18 | 14.24 | ||||||||||
| R magnitude | 14.49 (0.2) | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 14.77 (0.03) | ||||||||||||
| H magnitude | 14.80 (0.06) | ||||||||||||
| K magnitude | 14.80 (0.1) | ||||||||||||
| u magnitude | |||||||||||||
| g magnitude | 14.06 (0.04) | ||||||||||||
| r magnitude | 14.47 (0.04) | ||||||||||||
| i magnitude | 14.78 (0.09) | ||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 14.24 (0.001) | 14.26 | 14.24 | 14.24 (0.003) | 14.26 | ||||||||
| BP magnitude | 14.15 (0.001) | 14.12 | 14.12 | ||||||||||
| RP magnitude | 14.44 (0.0009) | 14.44 | 14.44 | ||||||||||
| Pan g magnitude | 14.08 (0.0008) | ||||||||||||
| Pan r magnitude | 14.45 (0.002) | ||||||||||||
| Pan i magnitude | 14.76 (0.001) | ||||||||||||
| Pan z magnitude | 15.03 (0.004) | ||||||||||||
| Pan y magnitude | 15.20 (0.005) | ||||||||||||
| 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.