HD 216777B
All names: PSO J343.9584-07.8341, USNO 682, ** GIC 185B, GEN# +1.00216777B, WDJ225549.47-075002.39, NLTT 55288, J2255-0750, EGGR 178, LHS 3875, CSI-08-22532, WDS J22558-0749B, BD-08 5980B, BD -08 5980B, USNO-B1.0 0821-00812279, SDSS J225549.84-075002.7, G156-64, HD 216777B, GJ 878.1 B, PB 7356, IDS 22506-0821 B, UBV 19654, 2MASS J22554942-0750024, WD2253-081, TIC 36726368, Gaia DR2 2610488514148351360, WD 2253-08, Gaia DR3 2610488514148351360, G 156-64, Gaia EDR3 2610488514148351360, WD 2253-081, PM 22532-0806, CCDM J22558-0750B, GJ 9803 B
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Kilic et al. 2025 | O'Brien et al. 2024 | Caron et al. 2023 | Kilic et al. 2020 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Bedard et al. 2017 | Tremblay et al. 2017 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Koester et al. 2001 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 55 50.06 (0.05) | 22 55 50.05 (0.08) | 22 55 49.50 | 22 55 50.06 | 22 55 49.47 (0.05) | 22 55 50.05 | 22 55 48.41 | ||||||||||||||
| Declination | -07 50 03.14 (0.04) | -07 50 03.12 (0.06) | -07 50 03.00 | -07 50 03.14 | -07 50 02.39 (0.04) | -07 50 03.12 | -07 49 58.44 | ||||||||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA | DA7.4 | DA8 | |||||||
| Effective temperature | [K] | 6924.0 (32) | 6612.0 (66) | 6693.0 (18) | 6705.0 (24) | 6690.0 (55) | 6924.0 | 6678.0 (128) | 6770.0 (130) | 6770.0 (126) | 6211.0 (13) | 7376.0 (26) | 6770.0 (180) | 6797.0 (49) | |||||||
| log(g) | [cgs] | 8.08 (0.009) | 7.95 (0.03) | 7.98 (0.006) | 7.98 (0.009) | 7.98 (0.02) | 8.08 | 7.97 (0.2) | 7.82 (0.2) | 7.87 (0.2) | 6.93 (0.03) | 8.39 (0.06) | 8.41 (0.2) | 8.02 (0.01) | |||||||
| Mass | [M☉] | 0.641 (0.008) | 0.562 (0.02) | 0.581 (0.006) | 0.579 (0.007) | 0.581 (0.01) | 0.64 | 0.56 (0.2) | 0.52 (0.1) | 0.85 | 0.86 (0.1) | 0.603 (0.01) | |||||||||
| log(Luminosity) | [L☉] | -3.76 (0.1) | |||||||||||||||||||
| Cooling age | [Gyr] | 1.7200 | 1.6550 (0.06) | 1.7570 | 3.7500 (0.9) | ||||||||||||||||
| 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] | 27.81 (0.06) | 27.81 (0.06) | 27.78 (0.1) | 27.78 (0.1) | 27.78 (0.1) | 27.97 (0.5) | 36.70 (5) | 27.81 | 27.81 (0.06) | 27.78 (0.1) | 36.10 | |||||||||
| Distance | [pc] | 35.95 (0.07) | 35.96 (0.08) | 36.00 (0.1) | 35.99 (0.1) | 35.99 (0.1) | 35.80 (0.7) | 35.75 (0.7) | 39.00 | 27.25 (4) | 35.95 | 35.95 (0.07) | 35.99 (0.1) | 27.70 | |||||||
| Composition | H | H | H | H | H | H | |||||||||||||||
| Proper motion (right ascension) | [mas/yr] | 549.1238346 (0.05) | 549.2535593 (0.1) | 549.124 (0.05) | 549.2535593 | ||||||||||||||||
| Proper motion (declination) | [mas/yr] | -46.98495791 (0.05) | -46.94091337 (0.1) | -46.985 (0.05) | -46.94091337 | ||||||||||||||||
| Variability | |||||||||||||||||||||
| Magnetic | |||||||||||||||||||||
| Bd | [MG] | ||||||||||||||||||||
| Infrared excess (disk) | |||||||||||||||||||||
| Binarity | yes | ||||||||||||||||||||
| B magnitude | 16.88 | 16.92 | |||||||||||||||||||
| V magnitude | 16.50 (0.05) | 16.50 | 16.50 | 16.48 | 16.50 | ||||||||||||||||
| R magnitude | 16.21 | ||||||||||||||||||||
| I magnitude | 15.92 | ||||||||||||||||||||
| J magnitude | 15.59 (0.005) | 15.63 (0.07) | 15.59 | 15.63 (0.07) | |||||||||||||||||
| H magnitude | 15.28 (0.09) | 15.28 (0.09) | 15.47 | 15.28 (0.09) | |||||||||||||||||
| K magnitude | 15.38 (0.02) | 15.20 (0.2) | 15.36 | 15.20 (0.2) | |||||||||||||||||
| u magnitude | 17.23 (0.03) | 17.23 (0.01) | 17.23 (0.01) | ||||||||||||||||||
| g magnitude | 16.56 (0.002) | 16.66 (0.004) | |||||||||||||||||||
| r magnitude | 16.37 (0.004) | 16.41 (0.004) | |||||||||||||||||||
| i magnitude | 16.32 (0.004) | 16.36 (0.005) | |||||||||||||||||||
| z magnitude | 16.31 (0.008) | 16.38 (0.008) | |||||||||||||||||||
| G magnitude | 16.35 (0.005) | 16.37 | 16.31 (0.002) | 16.35 | 16.35 (0.003) | 16.37 | |||||||||||||||
| BP magnitude | 16.57 (0.005) | 16.57 | 16.57 | ||||||||||||||||||
| RP magnitude | 15.97 (0.004) | 15.98 | 15.98 | ||||||||||||||||||
| Pan g magnitude | 16.56 (0.002) | 16.56 (0.002) | 16.55 (0.002) | ||||||||||||||||||
| Pan r magnitude | 16.37 (0.004) | 16.37 (0.004) | 16.37 (0.004) | ||||||||||||||||||
| Pan i magnitude | 16.32 (0.004) | 16.32 (0.004) | 16.32 (0.004) | ||||||||||||||||||
| Pan z magnitude | 16.31 (0.008) | 16.31 (0.008) | 16.31 (0.008) | ||||||||||||||||||
| Pan y magnitude | 16.37 (0.009) | 16.37 (0.009) | 16.37 (0.01) | ||||||||||||||||||
| E(B-V) | 0.001 | ||||||||||||||||||||
* Constant surface field
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