HD 166

Basic data :
HD 166 -- BY Dra Variable 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: * (2013A&A,HD,...), PM* (2016ApJ,Ci,...), X (1E,2E,...), ** (**,ADS,...), V* (NSV,V*), MIR (WISEA,WISE), BY* (2017ARep), UV (EUVE), NIR (2MASS), IR (IRAS) 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) : 00 06 36.7840068588 +29 01 17.412693890 (Optical) [ 0.0182 0.0123 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) : 00 04 00.7195202512 +28 44 44.450776944 [ 0.0182 0.0123 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) : 111.2635994682200 -32.8325926230645 [ 0.0182 0.0123 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 : 380.159 -177.730 [0.034 0.017 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) -6.57 [0.07] / z(spectroscopic) -0.000022 [0.000000] / cz -6.57 [0.07]    (Opt) A 2018A&A...619A..81H 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): 72.6419 [0.0292] 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: G8 D 1985ApJS...59..197B 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) : B 6.82 [0.01] D 2002A&A...384..180F V 6.07 [0.01] D 2002A&A...384..180F R 5.6 [~] E 2003AJ....125..984M G 5.878327 [0.002787] C 2020yCat.1350....0G J 4.733 [0.019] E 2003yCat.2246....0C H 4.629 [0.144] C 2003yCat.2246....0C K 4.314 [0.042] E 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!).

HD 166	GC 95	NLTT 235	UCAC4 596-000304
** ENG 1A	GCRV 51	NSV 33	USNO-B1.0 1190-00001748
** STT 549A	GEN# +1.00000166	PLX 9	USNO-A2.0 1125-00043457
ADS 69 A	GJ 5	PLX 9.00	uvby98 100000166
AG+28 4	GSC 01735-00927	PPM 89410	V* V439 And
ASCC 647404	GSC 01735-02532	RBS 15	WDS J00066+2901A
BD+28 4704	HIC 544	RX J0006.6+2901	WEB 97
CCDM J00065+2900A	HIP 544	1RXS J000636.8+290112	WISEA J000637.12+290115.4
Ci 20 9	HR 8	SAO 73743	WISE J000637.09+290115.4
CSI+28 4704 1	IDS 00014+2829 A	SKY# 200	YZ 28 3
1E 0004.0+2844	IRAS 00040+2844	SPOCS 4	[B10] 6
2E 15	LSPM J0006+2901	TIC 238432056	[ZEH2003] RX J0006.6+2901 1
2E 0004.0+2844	LTT 10023	TYC 1735-927-1	Gaia DR2 2860924621205256704
1ES 0004+28.7	2MASS J00063674+2901175	UBV 29	Gaia DR3 2860924621205256704
EUVE J0006+29.0	N30 12	UBV M 7136	Gaia DR1 2860924685628241024

References (355 between 1850 and 2024) (Total 355) 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

Collections of Measurements

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : HD 166

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 9 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

display existing annotations (1)

add an annotation to this object

report an error concerning the data of this object

Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:HD 166 and select 'bookmark this link' or equivalent in the popup menu