HD 242257

Query : HD 242257

Basic data :
HD 242257 -- Emission-line Star
Other object types: otypes_help 		* (HD,BD,...), Em* (EM*,HBHA,...), NIR (2MASS)
ICRS coord. (ep=J2000) : 		05 17 45.2198190120 +34 04 59.355223896 (Optical) [ 0.0195 0.0154 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		05 14 27.1463550455 +34 01 48.651451998 [ 0.0195 0.0154 90 ]
Gal coord. (ep=J2000) : 		172.4420086780537 -02.1467592593641 [ 0.0195 0.0154 90 ]
Proper motions mas/yr : 		0.279 -1.267 [0.025 0.019 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -30.0 [5] / z(~) -0.000100 [0.000017] / cz -30.00 [5.00]
   E 1953GCRV..C......0W
Parallaxes (mas): 		0.3398 [0.0217] A 2020yCat.1350....0G
Spectral type: 		G0 E 1993yCat.3135....0C
Fluxes (6) :
B 10.45 [0.04] D 2000A&A...355L..27H
V 9.75 [0.03] D 2000A&A...355L..27H
G 9.502231 [0.003144] C 2020yCat.1350....0G
J 7.915 [0.020] C 2003yCat.2246....0C
H 7.609 [0.023] C 2003yCat.2246....0C
K 7.392 [0.023] C 2003yCat.2246....0C
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Identifiers (14) :
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HD 242257 GSC 02398-00744 TYC 2398-744-1 Gaia DR3 182006836968906240
BD+33 997 HBHA 3215-10 WEB 4779 Gaia DR1 182006832670211328
EM* MWC 490 2MASS J05174521+3404593 [KW97] 21-59
GCRV 3139 TIC 2148606 Gaia DR2 182006836968906240

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

   

Observing logs
IUE : 3   

   

External archives :

Link by name to the catalogue in VizieR :

HD 242257 BD+33 997 GSC 02398-00744 2MASS J05174521+3404593 TYC 2398-744-1
Gaia DR2 182006836968906240 Gaia DR3 182006836968906240 Gaia DR1 182006832670211328

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