HD177940

Basic data :
V* R Aql -- OH/IR Star Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types: * (HD,AG,...), Mas (OH,[DLS93],...), V* (ASAS,ASASSN,...), Mi* (2012A&A), ** (CCDM,IDS,...), IR (IRAS,IRC,...), OH* (1983ApJ), MIR (AKARI,WISEA), LP* (2022yCat), Em* ([KW97]), PM* (2018yCat), NIR (2MASS) Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 19 06 22.2510922392 +08 13 48.012661776 (Optical) [ 0.1241 0.1207 90 ] A 2020yCat.1350....0G Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) : 19 03 57.6872920741 +08 09 10.287648359 [ 0.1241 0.1207 90 ] Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) : 041.9524405298861 +00.4538706773149 [ 0.1241 0.1207 90 ] Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode" pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr) pm-dec : mu-dec (expressed in the ICRS system in mas/yr) [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the proper motion reference Proper motions mas/yr : 4.311 -68.766 [0.147 0.161 90] A 2020yCat.1350....0G Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode" value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity) [error] : error of the corresponding value displayed before (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown) quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality) bibcode : bibcode of the value's origin Radial velocity / Redshift / cz : V(km/s) 33.84 [0.31] / z(spectroscopic) 0.000113 [0.000001] / cz 33.84 [0.31]    (Opt) A 2022yCat.1355....0G Syntax of Velocity of Local System is : "VSLR Vmin Vmax [error] (wavelength) bibcode" VLSR : central velocity (km/s) Vmin : minimum of the velocity range (km/s) Vmax : maximum of the velocity range (km/s) [error] : velocity resolution (km/s) (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown) bibcode : bibcode of the origin of the velocity VLSR : 47.3 40.9 54.1 [0.45] (Rad) 1993ApJS...89..189C Syntax of parallax is : 'value quality [error] bibcode' value : parallax value quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) [error] : mean error bibcode : bibcode of the parallax reference Parallaxes (mas): 4.2779 [0.1599] A 2020yCat.1350....0G Spectral type is made of 3 parts: %coding is composed of 4 parts : the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities; a quality letter: A=best quality→E=worst quality, {� } =unknown quality % a quality letter: A=best quality -> E=worst quality, {� } =unknown quality bibcode : bibcode of the spectral type reference Spectral type: M6.5-9e B 1974ApJS...28..271K Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode" filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z (System) : may be AB (default is Vega) flux-value : value of flux or magnitude [error] : error value quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality) MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4]) bibcode : bibcode of the flux reference Fluxes (7) : U 8.06 [~] C 2002yCat.2237....0D B 7.69 [~] C 2002yCat.2237....0D V 6.09 [~] C 2002yCat.2237....0D G 5.583870 [0.051961] C 2022yCat.1355....0G J 0.68 [0.19] D 2003yCat.2246....0C H -0.35 [0.22] D 2003yCat.2246....0C K -0.83 [0.23] D 2003yCat.2246....0C	SIMBAD within arcmin ', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX All (CDSPortal) Send to within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR. The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding. Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
Some important notes on this object about identifications and objects associations. notes: Misprinted IRAS 19038+0809 in 1993ApJS...89..189C The OH masers [DLS93] 19037+0824 and [DLS93b] 19037+0824 are not IRAS 19037+0824

HD 177940	GEN# +1.00177940	OH 041.9+00.4	[DLS93] 19037+0824
AG+08 2461	GSC 01040-00241	PPM 167172	[DLS93b] 19037+0824
AKARI-IRC-V1 J1906222+081347	HIC 93820	RAFGL 2324	[KW97] 35-54
ASAS J190622+0813.8	HIP 93820	SAO 124266	[LFO93] 1903+08
ASASSN-V J190622.07+081347.5	HR 7243	SKY# 35337	[PCC93] 351
BD+08 3970	IDS 19016+0805 A	TIC 196029451	[TVH89] 380
CCDM J19063+0814A	IRAS 19039+0809	TYC 1040-241-1	AAVSO 1901+08
CSI+08 3970 1	IRC +10406	V* R Aql	Gaia DR3 4307450193249412352
DO 5336	2MASS J19062224+0813478	WDS J19064+0814A	Gaia DR2 4307450193249412352
GC 26297	OH 042.0+00.5	WEB 16316
GCRV 11562	OH 041.952+00.454	WISEA J190622.25+081347.2

References (564 between 1850 and 2024) (Total 564) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

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Data at NED - NASA/IPAC Extragalactic Database : HD177940

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