BD+31 4218

Query : BD+31 4218

Basic data :
BD+31 4218 -- Emission-line Star
Other object types: otypes_help 		* (BD,AG,...), Em* (Hen,[KW97]), NIR (2MASS)
ICRS coord. (ep=J2000) : 		20 47 01.9347216672 +32 09 26.564547168 (Optical) [ 0.0100 0.0139 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		20 44 59.5146321874 +31 58 22.905425203 [ 0.0100 0.0139 90 ]
Gal coord. (ep=J2000) : 		074.6271541540629 -06.9740079050376 [ 0.0100 0.0139 90 ]
Proper motions mas/yr : 		-3.433 -8.280 [0.013 0.017 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -21 [10] / z(~) -0.000070 [0.000033] / cz -21.00 [10.00]
   D 1979IAUS...30...57E
Parallaxes (mas): 		0.8704 [0.0169] A 2020yCat.1350....0G
Spectral type: 		B2IVe C 2024MNRAS.528.4490R
Fluxes (6) :
B 8.93 [0.02] D 2000A&A...355L..27H
V 8.80 [0.01] D 2000A&A...355L..27H
G 8.708587 [0.002969] C 2020yCat.1350....0G
J 8.281 [0.023] C 2003yCat.2246....0C
H 8.186 [0.031] C 2003yCat.2246....0C
K 7.960 [0.024] C 2003yCat.2246....0C
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Identifiers (18) :
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BD+31 4218 Hen 3-1919 SAO 70491 Gaia DR2 1859938168823672576
AG+31 2084 HGAM 950 TIC 232897043 Gaia DR3 1859938168823672576
ALS 11539 LS II +31 32 TYC 2691-350-1 Gaia DR1 1859938164513193088
GCRV 71441 2MASS J20470192+3209265 WEB 18582
GSC 02691-00350 PPM 85512 [KW97] 49-29

References (19 between 1850 and 2026) (Total 19)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 3    Distance : 2    Rot : 1    Plx : 3    PM : 3    SpT : 3   

   

External archives :

Link by name to the catalogue in VizieR :

BD+31 4218 AG+31 2084 ALS 11539 GSC 02691-00350 LS II +31 32
2MASS J20470192+3209265 PPM 85512 SAO 70491 TYC 2691-350-1 Gaia DR2 1859938168823672576
Gaia DR3 1859938168823672576 Gaia DR1 1859938164513193088

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