All names: SDSS J233856.51+210120.0, WDS J23389+2101B, LSPM J2338+2101E, LP 463-28, SDSS J233856.50+210120.0, TIC 406539395, WD 2336+207, Gaia DR3 2826254713186397440, Gaia DR2 2826254713186397440, PSO J354.7355+21.0222, GJ 4357, J2338+2101, 2MASS J23385630+2101183, USNO-B1.0 1110-00597475, ** LDS 5108B, WDJ233856.32+210118.30, Gaia EDR3 2826254713186397440, NLTT 57507, 23389+2101E, PM J23389+2101E
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | McCleery et al. 2020 | Blouin et al. 2019 | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 38 56.63 (0.08) | 23 38 56.62 (0.1) | 23 38 56.62 (0.1) | 23 38 56.63 | 23 38 56.32 (0.08) | 23 38 56.62 | 23 38 55.30 | |||||||||
| Declination | 21 01 21.12 (0.06) | 21 01 21.03 (0.06) | 21 01 21.03 (0.06) | 21 01 21.12 | 21 01 18.30 (0.06) | 21 01 21.03 | 21 01 37.56 | |||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DC: | ||||||
| Effective temperature | [K] | 5276.0 (24) | 5242.0 (71) | 5283.0 (21) | 5216.0 (6) | 5079.7 (68) | 5285.0 (35) | 5300.0 (636) | 5350.0 (41) | |||||||
| log(g) | [cgs] | 8.06 (0.01) | 8.04 (0.05) | 8.07 (0.01) | 7.99 (0.006) | 7.95 (0.06) | 8.07 (0.02) | 8.00 (0) | 8.10 (0.02) | |||||||
| Mass | [M☉] | 0.617 (0.01) | 0.608 (0.03) | 0.625 (0.009) | 0.577 (0.006) | 0.628 (0.01) | 0.58 (0.1) | 0.647 (0.02) | ||||||||
| log(Luminosity) | [L☉] | -3.94 | ||||||||||||||
| Cooling age | [Gyr] | 5.0100 | 5.0680 (0.3) | |||||||||||||
| 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] | 25.37 (0.1) | 25.37 (0.1) | 25.36 (0.1) | 25.36 (0.1) | 25.36 (0.1) | 25.36 (0.1) | 25.37 | 25.37 (0.1) | 25.36 (0.1) | ||||||
| Distance | [pc] | 39.42 (0.2) | 39.42 (0.2) | 39.43 (0.2) | 39.44 (0.2) | 39.44 (0.2) | 39.44 (0.2) | 40.40 (7) | 39.42 | 39.42 (0.2) | 39.44 (0.2) | |||||
| Composition | H | H | H | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 273.4324726 (0.1) | 273.4086 (0.2) | 273.432 (0.1) | 273.4086 | |||||||||||
| Proper motion (declination) | [mas/yr] | 176.1377833 (0.08) | 176.1931721 (0.1) | 176.138 (0.08) | 176.1931721 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | ||||||||||||||||
| Bd | [MG] | |||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | yes | |||||||||||||||
| B magnitude | 18.20 | |||||||||||||||
| V magnitude | ||||||||||||||||
| R magnitude | 16.80 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 16.51 (0.01) | 16.32 (0.2) | 16.32 | 16.32 (0.2) | ||||||||||||
| H magnitude | 16.18 (0.3) | 16.18 (0.3) | 16.18 | 16.18 (0.3) | ||||||||||||
| K magnitude | 15.14 (0.03) | 15.14 | ||||||||||||||
| u magnitude | 19.62 (0.03) | 19.62 (0.04) | 19.62 (0.04) | |||||||||||||
| g magnitude | 18.14 (0.007) | 18.24 (0.007) | ||||||||||||||
| r magnitude | 17.65 (0.005) | 17.64 (0.006) | ||||||||||||||
| i magnitude | 17.45 (0.004) | 17.36 (0.006) | ||||||||||||||
| z magnitude | 17.37 (0.009) | 17.37 (0.01) | ||||||||||||||
| G magnitude | 17.68 (0.01) | 17.70 | 17.70 | 17.68 | 17.68 (0.003) | 17.70 | ||||||||||
| BP magnitude | 18.09 (0.01) | 18.13 | 18.13 | |||||||||||||
| RP magnitude | 17.08 (0.01) | 17.06 | 17.06 | |||||||||||||
| Pan g magnitude | 18.14 (0.007) | 18.14 (0.007) | 18.14 (0.007) | |||||||||||||
| Pan r magnitude | 17.65 (0.005) | 17.65 (0.005) | 17.65 (0.005) | |||||||||||||
| Pan i magnitude | 17.45 (0.005) | 17.45 (0.004) | 17.45 (0.004) | |||||||||||||
| Pan z magnitude | 17.37 (0.006) | 17.37 (0.009) | 17.36 (0.009) | |||||||||||||
| Pan y magnitude | 17.28 (0.01) | 17.28 (0.01) | 17.28 (0.01) | |||||||||||||
| E(B-V) | 0.002 | |||||||||||||||
* 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.