Lan 18
All names: Lan 18, 1845+019, 2MASS J18473908+0157356, GSC 00452-00419, Lan 018, WDJ184739.03+015735.44, Gaia DR2 4279269469712040832, 2RE J1847+015, 1RXS J184739.3+015732, RX J1847.6+0157, Gaia EDR3 4279269469712040832, 2EUVE J1847+01.9, 2RXF J184739.5+015734, USNO-B1.0 0919-00465161, RE J1847+01, RE J184739+015733, RE J1847+015, [TFW97] J184739.04+015736.10, BPM 93487, 2RE J184739+015731, WD 1845+019, TIC 172790147, KPD 1845+0154, EUVE J1847+01.9, Gaia DR3 4279269469712040832
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Leggett et al. 2018 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Lepine 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 | 18 47 39.02 (0.06) | 18 47 39.02 (0.09) | 18 47 39.02 | 18 47 39.03 (0.06) | 18 47 39.02 | 18 47 36.58 | ||||||||
| Declination | 01 57 34.13 (0.06) | 01 57 34.17 (0.09) | 01 57 34.13 | 01 57 35.45 (0.06) | 01 57 34.17 | 01 57 27.36 | ||||||||
| Spectral type | DA2.4 | DA | DA | DA1.5 | DA | DA1.7 | DA2 | |||||||
| Effective temperature | [K] | 21260.0 (4531) | 12352.0 | 30190.0 (436) | 30350.0 (443) | 29754.0 (16) | 26578.0 (503) | |||||||
| log(g) | [cgs] | 7.63 (0.2) | 6.80 | 7.88 (0.05) | 7.96 (0.05) | 7.82 (0.003) | 7.71 (0.02) | |||||||
| Mass | [M☉] | 0.447 (0.1) | 0.2 | 0.59 (0.02) | 0.63 (0.03) | 0.496 (0.01) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0310 (0.03) | 0.0100 | |||||||||||
| 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] | 24.05 (0.06) | 26.84 (1) | 23.94 (0.1) | 24.05 | 24.05 (0.06) | 23.94 (0.1) | |||||||
| Distance | [pc] | 41.59 (0.1) | 37.26 (1) | 41.78 (0.2) | 43.00 | 42.00 | 41.59 | 41.59 (0.1) | 41.78 (0.2) | |||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.517516262 (0.07) | -4.281628536 (0.2) | -4.518 (0.07) | -4.281628536 | |||||||||
| Proper motion (declination) | [mas/yr] | -82.37359093 (0.06) | -81.72310132 (0.2) | -82.374 (0.06) | -81.72310132 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 12.73 | |||||||||||||
| V magnitude | 12.96 | 12.94 | ||||||||||||
| R magnitude | 13.10 | |||||||||||||
| I magnitude | 12.30 | |||||||||||||
| J magnitude | 12.40 (0.05) | |||||||||||||
| H magnitude | 12.01 (0.08) | |||||||||||||
| K magnitude | 11.52 (0.05) | |||||||||||||
| u magnitude | ||||||||||||||
| g magnitude | ||||||||||||||
| r magnitude | ||||||||||||||
| i magnitude | ||||||||||||||
| z magnitude | ||||||||||||||
| G magnitude | 12.94 (0.002) | 12.95 | 12.94 | 12.94 (0.003) | 12.95 | |||||||||
| BP magnitude | 12.80 (0.002) | 12.73 | 12.73 | |||||||||||
| RP magnitude | 13.05 (0.003) | 13.05 | 13.05 | |||||||||||
| Pan g magnitude | 12.80 (0.001) | |||||||||||||
| Pan r magnitude | 13.21 (0.02) | |||||||||||||
| Pan i magnitude | 13.49 (0.008) | |||||||||||||
| Pan z magnitude | 13.61 (0.008) | |||||||||||||
| Pan y magnitude | 13.57 (0.01) | |||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* Constant surface field
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