All names: CPC 21.1 4375, 2MASS J23102054-6850199, TYC 9338-744-1, GJ 1280, NLTT 55990, WDS J23103-6850A, HIP 114416, CCDM J23103-6850A, HIC 114416, CD-69 2083, HD 218572, LTT 9387, GEN# +1.00218572, UGP 597, CPD-69 3306, PPM 366281, Gaia DR2 6387649708219253248, LTT 9387B, HD218572, WDJ231022.85-685023.96
| Parameter | Unit | Gaia DR2 | Subasavage et al. 2017 | Holberg et al. 2016 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|
| Right ascension | 23 10 23.04 (0.03) | 23 10 20.57 | 23 10 23.04 | |||
| Declination | -68 50 18.99 (0.03) | -68 50 20.03 | -68 50 18.99 | |||
| Spectral type | DB | DA | K3+Vk: | |||
| Effective temperature | [K] | 10910.0 (470) | 9837.0 (2000) | |||
| log(g) | [cgs] | 7.93 (0.06) | 7.94 (0) | |||
| Mass | [M☉] | 0.54 (0.05) | 0.57 (0) | |||
| log(Luminosity) | [L☉] | -2.65 (0.08) | ||||
| Cooling age | [Gyr] | 0.4500 (0.07) | 0.6000 | |||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| log(N/He) | ||||||
| log(O/He) | ||||||
| log(Na/He) | ||||||
| log(Mg/He) | ||||||
| log(Al/He) | ||||||
| log(Si/He) | ||||||
| log(P/He) | ||||||
| log(S/He) | ||||||
| log(Cl/He) | ||||||
| log(Sc/He) | ||||||
| log(Ti/He) | ||||||
| log(V/He) | ||||||
| log(Cr/He) | ||||||
| log(Mn/He) | ||||||
| log(Fe/He) | ||||||
| log(Co/He) | ||||||
| log(Ni/He) | ||||||
| log(Cu/He) | ||||||
| log(Zn/He) | ||||||
| log(Ga/He) | ||||||
| log(Ge/He) | ||||||
| log(Sr/He) | ||||||
| Parallax | [mas] | 47.41 (0.04) | 47.51 (0.2) | 47.75 (0.9) | 47.75 | 47.41 (0.04) |
| Distance | [pc] | 21.09 (0.02) | 21.05 (0.08) | 20.94 (0.9) | 20.94 | 21.09 (0.02) |
| Composition | He | H | ||||
| Proper motion (right ascension) | [mas/yr] | 65.16071463 (0.06) | 68.2 | 65.16071463 | ||
| Proper motion (declination) | [mas/yr] | 320.8163769 (0.06) | 318.59 | 320.8163769 | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | WDMS | |||||
| B magnitude | 13.66 | 9.80 | ||||
| V magnitude | 13.57 | 13.80 | 8.78 | |||
| R magnitude | 13.55 | |||||
| I magnitude | 13.50 | |||||
| J magnitude | 13.60 (0.06) | 6.82 | ||||
| H magnitude | 13.64 (0.1) | 6.28 | ||||
| K magnitude | 13.66 (0.1) | 6.15 | ||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 13.59 | 13.59 | ||||
| BP magnitude | 13.56 | 13.56 | ||||
| RP magnitude | 13.54 | 13.54 | ||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.