GJ 4305 B
All names: WD 2253+05, LSPM J2255+0545W, Gaia DR2 2711352930581558400, WDJ225555.71+054522.59, WD 2253+054, PSO J225555.991+054519.616, LP 581-35, 22559+0545W, LTT 16738, ** LDS 5021B, Gaia DR2 2711324446359728384, SDSS J225555.84+054521.0, NLTT 55300, GJ 4305 B, WDS J22560+0546B, CCDM J22559+0545B, USNO-B1.0 0957-00586627, GJ 4305, 2MASS J22555572+0545224, UCAC3 192-294450
| Parameter | Unit | Blouin et al. 2019 | MWDD H | Pan-STARRS DR1 | Gaia DR2 | Tremblay et al. 2017 | Holberg et al. 2016 | Limoges et al. 2015 | Sion et al. 2014 | Gianninas et al. 2011 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 55 56.08 (0.1) | 22 55 55.68 | 22 55 55.71 | 22 55 56.08 | 22 55 35.90 | ||||||||
| Declination | 05 45 18.49 (0.07) | 05 45 18.00 | 05 45 22.50 | 05 45 18.49 | 05 45 31.32 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA9 | DA | DA8.1 | DA | ||||
| Effective temperature | [K] | 5805.0 (35) | 5765.0 | 6240.0 (150) | 6241.0 (154) | 6100.0 (49) | 5600.0 | 6240.0 (154) | |||||
| log(g) | [cgs] | 7.94 (0.02) | 7.91 | 8.60 (0.2) | 8.60 (0.2) | 8.14 (0.1) | 8.61 (0.2) | ||||||
| Mass | [M☉] | 0.551 (0.01) | 0.532 | 0.97 (0.1) | 0.68 (0.07) | 0.98 (0.1) | |||||||
| log(Luminosity) | [L☉] | -3.78 | |||||||||||
| Cooling age | [Gyr] | 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] | 40.42 (0.1) | 40.42 (0.1) | 40.06 (0.8) | 40.88 (2) | 41.10 (3) | 40.42 (0.1) | 41.10 (3) | |||||
| Distance | [pc] | 24.74 (0.08) | 24.74 (0.08) | 24.96 (0.5) | 24.46 (1) | 24.30 (5) | 24.46 | 17.00 | 24.74 (0.08) | 24.33 (2) | |||
| Composition | H | H | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | 350.7586916 (0.1) | 365.0 | 350.7586916 | |||||||||
| Proper motion (declination) | [mas/yr] | -264.7111585 (0.1) | -276.0 | -264.7111585 | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | WDMS | yes | |||||||||||
| B magnitude | 16.00 | ||||||||||||
| V magnitude | 15.71 (0.05) | 11.26 | 15.70 | ||||||||||
| R magnitude | 16.06 | ||||||||||||
| I magnitude | 13.70 | ||||||||||||
| J magnitude | 15.18 (0.1) | 15.18 | |||||||||||
| H magnitude | 14.89 (0.1) | 14.89 | |||||||||||
| K magnitude | 15.02 (0.2) | 15.02 | |||||||||||
| u magnitude | 17.32 | 17.37 (0.009) | |||||||||||
| g magnitude | 16.42 | 16.45 (0.005) | |||||||||||
| r magnitude | 16.04 | 16.06 (0.005) | |||||||||||
| i magnitude | 15.89 | 15.91 (0.005) | |||||||||||
| z magnitude | 15.90 | 15.88 (0.007) | |||||||||||
| G magnitude | 16.05 | 16.05 | |||||||||||
| BP magnitude | 16.34 | 16.34 | |||||||||||
| RP magnitude | 15.57 | 15.57 | |||||||||||
| Pan g magnitude | 16.39 (0.003) | 16.39 (0.003) | |||||||||||
| Pan r magnitude | 16.04 (0.004) | 16.04 (0.004) | |||||||||||
| Pan i magnitude | 15.91 (0.005) | 15.91 (0.005) | |||||||||||
| Pan z magnitude | 15.85 (0.01) | 15.85 (0.01) | |||||||||||
| Pan y magnitude | 15.81 (0.007) | 15.81 (0.007) | |||||||||||
* Constant surface field
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