Feige 22

All names: CHSS 3529, NSV 843, Gaia DR3 2516322146457318144, PLX 506.01, TIC 422888592, UCAC2 33509154, USNO-B1.0 0952-00025137, UBV 2532, PM J02302+0515, GJ 100.1, CSI+05-02277, AC +05 1998, GEN# +6.20001022, UBV M 43302, JP11 5236, WD 0227+050, Gaia DR2 2516322146457318144, HIP 11650, HIC 11650, J0230+0515, EGGR 19, TYC 52-736-1, Feige 22, GSC 00052-00736, FB 21, Gaia EDR3 2516322146457318144, 2MASS J02301662+0515508, 02302+0515, GCRV 53109, WDJ023016.63+051550.70, uvby98 620001022, WD 0227+05, SDSS J023016.67+051550.4, FS 6, [HMT98] AS 05-0

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 McCleery et al. 2020 Kilic et al. 2020 MWDD H Gaia DR2 Bedard et al. 2017 Tremblay et al. 2017 Stilism Holberg et al. 2016 Limoges et al. 2015 Sion et al. 2014 Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 02 30 16.71 (0.04) 02 30 16.71 (0.08) 02 30 16.71 (0.08) 02 30 16.56 02 30 16.71 02 30 16.63 (0.04) 02 30 16.71 02 30 19.39
Declination 05 15 50.30 (0.03) 05 15 50.32 (0.06) 05 15 50.32 (0.06) 05 15 50.40 05 15 50.30 05 15 50.70 (0.03) 05 15 50.32 05 16 17.76
Spectral type DA DA DA DA DA DA DA DA DA DA2.7 DA DA DA2.5 DA3
Effective temperature [K] 18372.0 (399) 18965.0 (391) 18889.9 (308) 18372.0 (400) 15058.0 19514.0 (302) 19920.0 (310) 19920.0 (305) 19640.0 (296) 18779.0 19920.0 (305) 19341.0 (12) 19972.0 (206)
log(g) [cgs] 7.85 (0.02) 7.87 (0.03) 7.87 (0.02) 7.85 (0.02) 7.64 7.95 (0.05) 7.93 (0.05) 7.93 (0.05) 7.90 (0.05) 7.93 (0.05) 7.76 (0.002) 7.94 (0.008)
Mass [M] 0.539 (0.01) 0.552 (0.01) 0.538 (0.01) 0.43 0.63 (0.2) 0.59 (0.02) 0.57 (0.03) 0.58 (0.03) 0.589 (0.007)
log(Luminosity) [L] -1.58
Cooling age [Gyr] 0.1112 0.0700
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] 37.71 (0.05) 37.71 (0.05) 37.70 (0.1) 37.70 (0.1) 37.52 (5) 41.15 (5) 37.71 37.71 (0.05) 37.70 (0.1) 45.00 (5)
Distance [pc] 26.52 (0.04) 26.52 (0.04) 26.53 (0.07) 26.53 (0.07) 26.70 (4) 26.65 (4) 24.30 (3) 26.90 (1) 24.30 25.00 26.52 26.52 (0.04) 26.53 (0.07) 22.22 (2)
Composition H H H H H H
Proper motion (right ascension) [mas/yr] 76.95837669 (0.05) 76.81913568 (0.1) 76.958 (0.05) 76.81913568
Proper motion (declination) [mas/yr] -24.50233604 (0.04) -24.62565627 (0.1) -24.502 (0.04) -24.62565627
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 12.75 (0.0009)
V magnitude 12.78 (0.01) 12.80 12.65 12.80 (0.0009)
R magnitude 12.90 (0.0009)
I magnitude 13.00 (0.0009)
J magnitude 13.28 (0.03)
H magnitude 13.37 (0.03)
K magnitude 13.43 (0.04)
u magnitude 12.76 (0.003) 13.30 (0.003)
g magnitude 12.93 (0.001) 12.98 (0.002)
r magnitude 12.99 (0.002) 13.23 (0.003)
i magnitude 14.17 (0.01) 13.78 (0.003)
z magnitude 13.57 (0.003) 13.74 (0.004)
G magnitude 12.82 (0.002) 12.84 12.84 12.82 12.82 (0.003) 12.84
BP magnitude 12.74 (0.002) 12.72 12.72
RP magnitude 13.00 (0.001) 13.00 13.00
Pan g magnitude 13.23 (0)
Pan r magnitude 13.45 (0)
Pan i magnitude 13.34 (0.002)
Pan z magnitude 13.58 (0.003)
Pan y magnitude 13.74 (0.008)
E(B-V) 0.000

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit





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.