All names: NLTT 55932, LP 877-69, G 275-8, WISEA J230841.00-214500.5, Gaia DR3 2386223463892847872, 2MASS J23084074-2144593, EC 23060-2201, Gaia DR2 2386223463892847872, LTT 9373, WD 2306-220, WDJ230840.77-214459.60, Gaia EDR3 2386223463892847872, TIC 204328293
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | O'Brien et al. 2024 | Gaia DR2 | Stilism | Subasavage et al. 2008 | Kawka et Vennes 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 23 08 41.12 (0.02) | 23 08 41.11 (0.05) | 23 08 40.78 | 23 08 41.12 | 23 08 40.77 (0.02) | 23 08 41.11 | 23 08 40.87 | |||||
| Declination | -21 45 01.16 (0.02) | -21 45 01.11 (0.05) | -21 44 59.60 | -21 45 01.16 | -21 44 59.60 (0.02) | -21 45 01.11 | -21 44 56.04 | |||||
| Spectral type | DA | DA3.0 | DA | DA | DA3.0 | DA3.4 | ||||||
| Effective temperature | [K] | 16050.0 (299) | 16285.0 (1273) | 14810.0 (260) | 16784.0 (202) | |||||||
| log(g) | [cgs] | 8.00 (0.02) | 7.86 (0.08) | 8.05 (0.01) | ||||||||
| Mass | [M☉] | 0.612 (0.01) | 0.53 (0.04) | 0.647 (0.008) | ||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| 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] | 30.51 (0.03) | 30.51 (0.03) | 30.39 (0.06) | 30.51 | 30.51 (0.03) | 30.39 (0.06) | 30.00 | ||||
| Distance | [pc] | 32.77 (0.03) | 32.78 (0.03) | 32.91 (0.07) | 33.30 | 33.00 | 32.77 | 32.77 (0.03) | 32.91 (0.07) | 33.33 | ||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 306.6771925 (0.03) | 306.8347656 (0.1) | 306.677 (0.03) | 306.8347656 | |||||||
| Proper motion (declination) | [mas/yr] | -97.64337483 (0.03) | -97.49231921 (0.1) | -97.643 (0.03) | -97.49231921 | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | 13.60 | |||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | 14.13 (0.03) | 14.13 (0.03) | ||||||||||
| H magnitude | 14.18 (0.05) | 14.18 (0.05) | ||||||||||
| K magnitude | 14.33 (0.07) | 14.33 (0.07) | ||||||||||
| u magnitude | ||||||||||||
| g magnitude | ||||||||||||
| r magnitude | ||||||||||||
| i magnitude | ||||||||||||
| z magnitude | ||||||||||||
| G magnitude | 13.77 (0.001) | 13.79 | 13.77 | 13.77 (0.003) | 13.79 | |||||||
| BP magnitude | 13.72 (0.001) | 13.70 | 13.70 | |||||||||
| RP magnitude | 13.90 (0.002) | 13.90 | 13.90 | |||||||||
| Pan g magnitude | 13.68 (0.005) | |||||||||||
| Pan r magnitude | 13.95 (0.004) | |||||||||||
| Pan i magnitude | 14.21 (0.005) | |||||||||||
| Pan z magnitude | 14.46 (0.002) | |||||||||||
| Pan y magnitude | 14.61 (0.006) | |||||||||||
| E(B-V) | 0.001 | |||||||||||
* 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.