All names: WD 2307+548, ** NSN 11B, Gaia EDR3 1996725077535283200, USNO-B1.0 1451-00437532, TIC 315301267, WDJ230958.53+550649.43, 2MASS J23095848+5506491, Gaia DR2 1996725077535283200, CNS5 5704, Gaia DR3 1996725077535283200, WDS J23100+5507B, PM J23098+5506E, G 233-42B, J2309+5506, 23098+5506E, LSPM J2309+5506E
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 09 59.29 (0.02) | 23 09 59.27 (0.03) | 23 09 59.27 (0.03) | 23 09 59.29 | 23 09 58.53 (0.02) | 23 09 59.27 | 23 09 58.68 | ||||||
| Declination | 55 06 50.20 (0.02) | 55 06 50.17 (0.03) | 55 06 50.17 (0.03) | 55 06 50.20 | 55 06 49.43 (0.02) | 55 06 50.17 | 55 06 47.16 | ||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | ||||||
| Effective temperature | [K] | 5531.0 (26) | 5352.0 (12) | 5517.4 (22) | 5700.0 (86) | 5617.0 (15) | |||||||
| log(g) | [cgs] | 8.11 (0.02) | 8.00 (0.005) | 8.10 (0.01) | 8.00 (0) | 8.15 (0.006) | |||||||
| Mass | [M☉] | 0.651 (0.01) | 0.585 (0.005) | 0.59 (0.1) | 0.679 (0.005) | ||||||||
| log(Luminosity) | [L☉] | -3.82 | |||||||||||
| Cooling age | [Gyr] | 3.7300 | |||||||||||
| 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] | 60.89 (0.03) | 60.89 (0.03) | 60.91 (0.04) | 60.91 (0.04) | 60.91 (0.04) | 60.89 | 60.89 (0.03) | 60.91 (0.04) | ||||
| Distance | [pc] | 16.42 (0.008) | 16.42 (0.008) | 16.42 (0.01) | 16.42 (0.01) | 16.42 (0.01) | 16.20 (0.7) | 16.42 | 16.42 (0.008) | 16.42 (0.01) | |||
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 407.3658425 (0.03) | 407.3331377 (0.06) | 407.366 (0.03) | 407.3331377 | ||||||||
| Proper motion (declination) | [mas/yr] | 48.00481691 (0.03) | 47.9750871 (0.06) | 48.005 (0.03) | 47.9750871 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 16.00 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 14.30 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 14.27 (0.05) | 14.27 | 14.27 (0.05) | ||||||||||
| H magnitude | 13.94 (0.07) | 13.94 | 13.94 (0.07) | ||||||||||
| K magnitude | 13.93 (0.07) | 13.93 | 13.93 (0.07) | ||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 15.60 (0.002) | 15.62 | 15.62 | 15.60 | 15.60 (0.003) | 15.62 | |||||||
| BP magnitude | 15.97 (0.002) | 15.98 | 15.98 | ||||||||||
| RP magnitude | 15.07 (0.002) | 15.07 | 15.07 | ||||||||||
| Pan g magnitude | 16.04 (0.003) | 16.04 (0.003) | |||||||||||
| Pan r magnitude | 15.60 (0.003) | 15.60 (0.003) | |||||||||||
| Pan i magnitude | 15.42 (0.002) | 15.42 (0.002) | |||||||||||
| Pan z magnitude | 15.39 (0.005) | 15.39 (0.005) | |||||||||||
| Pan y magnitude | 15.33 (0.004) | 15.33 (0.004) | |||||||||||
| 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.