All names: LP701-069, SDSS J230419.08-070126.7, WD 2301-072.1, WDS J23043-0701A, Gaia DR3 2634608741244966016, GALEX J230419.0-070125, PB 7512, USNO-B1.0 0829-00822368, J2304-0701, WDJ230418.93-070124.51, SDSS J230419.09-070126.7, Gaia EDR3 2634608741244966016, ** LDS 5042A, Gaia DR2 2634608741244966016, LP 701-69
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 04 19.19 (0.07) | 23 04 19.18 (0.09) | 23 04 19.19 | 23 04 18.93 (0.07) | 23 04 19.18 | 23 04 17.83 | |||||
| Declination | -07 01 28.10 (0.08) | -07 01 27.99 (0.1) | -07 01 28.10 | -07 01 24.51 (0.08) | -07 01 27.99 | -07 01 12.36 | |||||
| Spectral type | DC | DC | DQ | DC7 | DC7 | ||||||
| Effective temperature | [K] | 7362.0 (38) | 7404.0 (41) | 7298.0 (77) | |||||||
| log(g) | [cgs] | 8.04 (0.01) | 8.04 (0.01) | 8.03 (0.02) | |||||||
| Mass | [M☉] | 0.598 (0.009) | 0.597 (0.01) | 0.591 (0.02) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 1.4900 | |||||||||
| log(H/He) | -3.6 | -3.6 | |||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| 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) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 18.23 (0.09) | 18.23 (0.1) | 18.23 (0.1) | 18.23 | 18.23 (0.09) | 18.23 (0.1) | ||||
| Distance | [pc] | 54.84 (0.3) | 54.85 (0.4) | 54.84 (0.4) | 54.84 | 54.84 (0.3) | 54.84 (0.4) | ||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 240.4212244 (0.1) | 240.8788306 (0.2) | 240.421 (0.1) | 240.8788306 | ||||||
| Proper motion (declination) | [mas/yr] | -224.4837311 (0.08) | -224.2859701 (0.3) | -224.484 (0.08) | -224.2859701 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.00 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 17.00 | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.69 (0.02) | ||||||||||
| H magnitude | 16.60 (0.04) | ||||||||||
| K magnitude | 16.54 (0.06) | ||||||||||
| u magnitude | 17.61 (0.01) | 17.63 (0.01) | 17.63 (0.01) | ||||||||
| g magnitude | 17.19 (0.004) | 17.19 (0.004) | |||||||||
| r magnitude | 17.10 (0.005) | 17.10 (0.005) | |||||||||
| i magnitude | 17.12 (0.006) | 17.12 (0.006) | |||||||||
| z magnitude | 17.19 (0.01) | 17.19 (0.01) | |||||||||
| G magnitude | 17.07 (0.01) | 17.10 | 17.07 | 17.07 (0.003) | 17.10 | ||||||
| BP magnitude | 17.20 (0.01) | 17.21 | 17.21 | ||||||||
| RP magnitude | 16.83 (0.008) | 16.82 | 16.82 | ||||||||
| Pan g magnitude | 17.19 (0.006) | 17.19 (0.006) | |||||||||
| Pan r magnitude | 17.11 (0.005) | 17.11 (0.005) | |||||||||
| Pan i magnitude | 17.16 (0.004) | 17.16 (0.004) | |||||||||
| Pan z magnitude | 17.25 (0.005) | 17.25 (0.005) | |||||||||
| Pan y magnitude | 17.28 (0.02) | 17.28 (0.02) | |||||||||
| 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.