BD+20 5125B
All names: CCDM J22196+2122B, PM J22194+2122, NLTT 53526, LP 460-3, WD 2217+211, LSPM J2219+2122W, BD+20 5125B, TIC 353035668, LP 460-003, J2219+2122, ** LDS 4956B, PSO J334.8703+21.3730, Gaia EDR3 1778836056545324160, USNO-B1.0 1113-00582739, WDJ221928.57+212220.58, Gaia DR3 1778836056545324160, 22194+2122, SDSS J221928.69+212221.5, WDS J22196+2122B, 2MASS J22192853+2122194, Gaia DR2 1778836056545324160
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Tremblay et al. 2017 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 19 28.99 (0.1) | 22 19 28.98 (0.1) | 22 19 28.99 | 22 19 28.57 (0.1) | 22 19 28.98 | 22 19 27.62 | ||||||||||
| Declination | 21 22 23.87 (0.1) | 21 22 23.76 (0.2) | 21 22 23.87 | 21 22 20.57 (0.1) | 21 22 23.76 | 21 22 05.16 | ||||||||||
| Spectral type | DC | DC | DC | DC | DC | DC | DC | DC: | DC9 | DC9 | ||||||
| Effective temperature | [K] | 4748.0 (23) | 4764.0 (19) | 4395.0 (90) | 5229.0 | 4927.0 | 4600.0 (355) | 4796.0 (51) | ||||||||
| log(g) | [cgs] | 7.33 (0.07) | 7.16 (0.02) | 6.79 (0.1) | 7.78 | 7.56 | 8.00 (0) | 7.17 (0.04) | ||||||||
| Mass | [M☉] | 0.319 (0.06) | 0.21 (0.007) | 0.08 (0.04) | 0.457 | 0.339 | 0.58 (0.1) | 0.212 (0.01) | ||||||||
| log(Luminosity) | [L☉] | -4.19 | ||||||||||||||
| Cooling age | [Gyr] | 1.8100 | 1.6100 (0.2) | 2.5410 | 2.5620 | |||||||||||
| 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] | 18.52 (0.1) | 18.61 (0.2) | 18.61 (0.2) | 18.61 (0.2) | 18.76 (0.4) | 18.52 | 18.52 (0.1) | 18.61 (0.2) | 20.10 (2) | ||||||
| Distance | [pc] | 54.01 (0.4) | 53.73 (0.5) | 53.72 (0.5) | 53.72 (0.5) | 53.30 (1) | 32.00 (7) | 54.01 | 54.01 (0.4) | 53.72 (0.5) | 49.75 (5) | |||||
| Composition | H | H | He | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 368.3824724 (0.1) | 368.0949353 (0.2) | 368.382 (0.1) | 368.0949353 | |||||||||||
| Proper motion (declination) | [mas/yr] | 205.8519058 (0.1) | 205.3760083 (0.3) | 205.852 (0.1) | 205.3760083 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | yes | |||||||||||||||
| B magnitude | 19.10 | |||||||||||||||
| V magnitude | 17.69 (0.05) | 18.30 | ||||||||||||||
| R magnitude | 17.40 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.41 (0.02) | 16.45 (0.1) | 16.45 (0.1) | |||||||||||||
| H magnitude | ||||||||||||||||
| K magnitude | 16.02 (0.3) | 16.02 (0.3) | 16.02 (0.3) | |||||||||||||
| u magnitude | 20.27 (0.03) | 20.27 (0.04) | 20.27 (0.04) | |||||||||||||
| g magnitude | 18.42 (0.009) | 18.54 (0.007) | ||||||||||||||
| r magnitude | 17.71 (0.004) | 17.73 (0.006) | ||||||||||||||
| i magnitude | 17.43 (0.005) | 17.41 (0.007) | ||||||||||||||
| z magnitude | 17.32 (0.009) | 17.24 (0.01) | ||||||||||||||
| G magnitude | 17.75 (0.02) | 17.77 | 17.67 (0.004) | 17.75 | 17.75 (0.003) | 17.77 | ||||||||||
| BP magnitude | 18.35 (0.02) | 18.34 | 18.34 | |||||||||||||
| RP magnitude | 17.10 (0.01) | 17.10 | 17.10 | |||||||||||||
| Pan g magnitude | 18.42 (0.009) | 18.42 (0.009) | 18.42 (0.009) | |||||||||||||
| Pan r magnitude | 17.71 (0.004) | 17.71 (0.004) | 17.71 (0.004) | |||||||||||||
| Pan i magnitude | 17.43 (0.004) | 17.43 (0.004) | 17.43 (0.005) | |||||||||||||
| Pan z magnitude | 17.32 (0.007) | 17.32 (0.007) | 17.32 (0.009) | |||||||||||||
| Pan y magnitude | 17.28 (0.03) | 17.28 (0.03) | 17.28 (0.02) | |||||||||||||
| E(B-V) | 0.004 | |||||||||||||||
* Constant surface field
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