WD 0821+509
All names: SDSS J082519.70+504920.1, J0825+5049, USNO-B1.0 1408-00202734, NLTT 19458, Gaia DR2 1028072371590379136, Gaia EDR3 1028072371590379136, SDSS J082519.70+504920.0, SDSS J082519.71+504920.1, WDJ082519.72+504920.15, WD 0821+509, LP 124-32, LSPM J0825+5049, Gaia DR3 1028072371590379136
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 25 19.16 (0.1) | 08 25 19.18 (0.2) | 08 25 19.16 | 08 25 19.72 (0.1) | 08 25 19.18 | 08 25 19.37 | |||||||
| Declination | 50 49 14.88 (0.1) | 50 49 15.05 (0.1) | 50 49 14.88 | 50 49 20.15 (0.1) | 50 49 15.05 | 50 49 18.84 | |||||||
| Spectral type | DC | DC | DC | DC | DA: | DC | DC12.5 | ||||||
| Effective temperature | [K] | 4627.0 (30) | 4667.0 (30) | 4591.0 | 4276.0 | 4681.0 (71) | |||||||
| log(g) | [cgs] | 7.88 (0.02) | 7.91 (0.02) | 7.84 | 7.59 | 7.91 (0.04) | |||||||
| Mass | [M☉] | 0.505 (0.01) | 0.526 (0.01) | 0.483 | 0.351 | 0.525 (0.03) | |||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 6.4200 | 5.5200 | 3.9290 | |||||||||
| 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] | 21.05 (0.2) | 20.90 (0.2) | 20.90 (0.2) | 21.05 | 21.05 (0.2) | 20.90 (0.2) | ||||||
| Distance | [pc] | 47.51 (0.4) | 47.85 (0.5) | 47.84 (0.5) | 47.51 | 47.51 (0.4) | 47.84 (0.5) | ||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -328.9962345 (0.2) | -328.8102292 (0.3) | -328.996 (0.2) | -328.8102292 | ||||||||
| Proper motion (declination) | [mas/yr] | -328.9944937 (0.2) | -329.4225914 (0.2) | -328.994 (0.2) | -329.4225914 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 20.10 | ||||||||||||
| V magnitude | |||||||||||||
| R magnitude | 18.20 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 17.08 (0.04) | 17.08 (0.04) | |||||||||||
| H magnitude | 16.83 (0.04) | 16.83 (0.04) | |||||||||||
| K magnitude | 16.74 (0.04) | 16.74 (0.04) | |||||||||||
| u magnitude | 21.11 (0.08) | 21.14 (0.09) | 21.14 (0.09) | 20.89 | |||||||||
| g magnitude | 19.37 (0.01) | 19.37 (0.01) | 19.17 | ||||||||||
| r magnitude | 18.43 (0.008) | 18.43 (0.008) | 18.31 | ||||||||||
| i magnitude | 18.08 (0.008) | 18.08 (0.008) | 17.98 | ||||||||||
| z magnitude | 17.99 (0.02) | 17.99 (0.02) | 17.93 | ||||||||||
| G magnitude | 18.48 (0.03) | 18.50 | 18.48 | 18.48 (0.003) | 18.50 | ||||||||
| BP magnitude | 19.04 (0.03) | 19.08 | 19.08 | ||||||||||
| RP magnitude | 17.75 (0.02) | 17.78 | 17.78 | ||||||||||
| Pan g magnitude | 19.19 (0.003) | 19.19 (0.01) | |||||||||||
| Pan r magnitude | 18.43 (0.01) | 18.45 (0.007) | |||||||||||
| Pan i magnitude | 18.11 (0.008) | 18.10 (0.007) | |||||||||||
| Pan z magnitude | 18.01 (0.01) | 17.98 (0.005) | |||||||||||
| Pan y magnitude | 17.92 (0.02) | 17.93 (0.01) | |||||||||||
| E(B-V) | 0.001 | ||||||||||||
* Constant surface field
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