All names: SDSS J225555.84+054521.0, WD 2253+05, PM J22559+0545W, PSO J343.9833+05.7553, WD 2253+054, J2255+0545, LSPM J2255+0545W, ** LDS 5021B, CNS5 5655, WDJ225555.71+054522.59, Gaia EDR3 2711324446359728384, 22559+0545W, WDS J22560+0546B, UCAC3 192-294450, CCDM J22559+0545B, USNO-B1.0 0957-00586627, GALEX J225555.7+054521, 2MASS J22555572+0545224, LP 581-35, Gaia DR2 2711324446359728384, Gaia DR3 2711324446359728384, TIC 311551678, GJ 4305, NLTT 55300, LTT 16738
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | McCleery et al. 2020 | Kilic et al. 2020 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Tremblay et al. 2017 | Stilism | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 55 56.09 (0.07) | 22 55 56.08 (0.1) | 22 55 56.08 (0.1) | 22 55 55.68 | 22 55 56.09 | 22 55 55.71 (0.07) | 22 55 56.08 | 22 55 35.90 | |||||||||||||
| Declination | 05 45 18.36 (0.04) | 05 45 18.49 (0.07) | 05 45 18.49 (0.07) | 05 45 18.00 | 05 45 18.36 | 05 45 22.59 (0.04) | 05 45 18.49 | 05 45 31.32 | |||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA9 | DA | DA | DA8.1 | DA | ||||||
| Effective temperature | [K] | 5880.0 (18) | 5931.0 (78) | 5912.0 (10) | 5934.1 (35) | 5881.0 (18) | 5805.0 (35) | 5765.0 | 6240.0 (150) | 6241.0 (154) | 6100.0 (49) | 5600.0 | 6240.0 (154) | 5986.0 (40) | |||||||
| log(g) | [cgs] | 7.96 (0.008) | 8.00 (0.04) | 7.99 (0.005) | 8.01 (0.02) | 7.96 (0.008) | 7.94 (0.02) | 7.91 | 8.60 (0.2) | 8.60 (0.2) | 8.14 (0.1) | 8.61 (0.2) | 8.02 (0.01) | ||||||||
| Mass | [M☉] | 0.563 (0.006) | 0.585 (0.03) | 0.582 (0.004) | 0.565 (0.006) | 0.551 (0.01) | 0.532 | 0.97 (0.1) | 0.68 (0.07) | 0.98 (0.1) | 0.598 (0.01) | ||||||||||
| log(Luminosity) | [L☉] | -3.78 | |||||||||||||||||||
| Cooling age | [Gyr] | 2.3800 | 2.2260 (0.08) | 2.1720 | 4.8300 | ||||||||||||||||
| 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] | 40.33 (0.07) | 40.33 (0.07) | 40.42 (0.1) | 40.42 (0.1) | 40.42 (0.1) | 40.42 (0.1) | 40.06 (0.8) | 40.88 (2) | 41.10 (3) | 40.33 | 40.33 (0.07) | 40.42 (0.1) | 41.10 (3) | |||||||
| Distance | [pc] | 24.80 (0.04) | 24.80 (0.04) | 24.74 (0.09) | 24.74 (0.08) | 24.74 (0.08) | 24.74 (0.08) | 24.96 (0.5) | 24.46 (1) | 24.30 (5) | 24.46 | 17.00 | 24.80 | 24.80 (0.04) | 24.74 (0.08) | 24.33 (2) | |||||
| Composition | H | H | H | H | H | H | H | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 350.8079607 (0.05) | 350.7586916 (0.1) | 350.808 (0.05) | 350.7586916 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -264.7060095 (0.05) | -264.7111585 (0.1) | -264.706 (0.05) | -264.7111585 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | WDMS | yes | |||||||||||||||||||
| B magnitude | 16.00 | ||||||||||||||||||||
| V magnitude | 15.71 (0.05) | 11.26 | |||||||||||||||||||
| R magnitude | 16.06 | ||||||||||||||||||||
| I magnitude | |||||||||||||||||||||
| J magnitude | 15.07 (0.004) | 15.18 (0.1) | 15.18 (0.1) | ||||||||||||||||||
| H magnitude | 14.82 (0.005) | 14.89 (0.1) | 14.89 (0.1) | ||||||||||||||||||
| K magnitude | 14.80 (0.009) | 15.02 (0.2) | 15.02 (0.2) | ||||||||||||||||||
| u magnitude | 17.36 (0.009) | 17.37 (0.009) | 17.37 (0.009) | ||||||||||||||||||
| g magnitude | 16.39 (0.003) | 16.45 (0.005) | |||||||||||||||||||
| r magnitude | 16.04 (0.004) | 16.06 (0.005) | |||||||||||||||||||
| i magnitude | 15.91 (0.005) | 15.91 (0.005) | |||||||||||||||||||
| z magnitude | 15.85 (0.01) | 15.88 (0.007) | |||||||||||||||||||
| G magnitude | 16.04 (0.01) | 16.05 | 16.05 | 16.04 | 16.04 (0.003) | 16.05 | |||||||||||||||
| BP magnitude | 16.33 (0.01) | 16.34 | 16.34 | ||||||||||||||||||
| RP magnitude | 15.56 (0.006) | 15.57 | 15.57 | ||||||||||||||||||
| Pan g magnitude | 16.39 (0.003) | 16.39 (0.003) | 16.39 (0.003) | ||||||||||||||||||
| Pan r magnitude | 16.04 (0.004) | 16.04 (0.004) | 16.04 (0.004) | ||||||||||||||||||
| Pan i magnitude | 15.91 (0.005) | 15.91 (0.005) | 15.91 (0.005) | ||||||||||||||||||
| Pan z magnitude | 15.85 (0.01) | 15.85 (0.01) | 15.85 (0.01) | ||||||||||||||||||
| Pan y magnitude | 15.81 (0.007) | 15.81 (0.007) | 15.81 (0.007) | ||||||||||||||||||
| 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.