coord 274.0555d49.8678d (ICRS, 2000, 2000), radius: 30 arcsec

Query : coord 274.0555d49.8678d (ICRS, 2000, 2000), radius: 30 arcsec
deg arc min arc sec

Basic data :
V* AM Her -- Cataclysmic Binary Distance to the center arcsec: 0.93 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: X (2012ApJS,4U,...), CV* (2012ApJ), * (PLX,UCAC4,...), V* (AN,ROTSE1,...), UV (2012ApJS,2EUVE,...), IR (2MASS,WISEA,...), PM* (2018yCat,PM), dS* (2000AJ), SB* (SBC9), Er* ([GKL99]), Em* (2020A&A), gam (INTREF) 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) : 18 16 13.2546541781 +49 52 04.759861155 (Optical) [ 0.0162 0.0173 90 ] A 2018yCat.1345....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) : 18 14 58.7450395813 +49 50 55.145937330 [ 0.0162 0.0173 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) : 077.8648120482383 +25.8762501226603 [ 0.0162 0.0173 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 : -45.957 28.046 [0.034 0.034 90] A 2018yCat.1345....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) -19.0 [~] / z(~) -0.000063 [~] / cz -19.00 [~]    E 1995A&AS..114..269D 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): 11.3953 [0.0179] A 2018yCat.1345....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: M4.5-5Ve C 1981ApJ...246..919L 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 (10) : B 15.124 [0.35] D 2012yCat.1322....0Z V 14.808 [0.37] D 2012yCat.1322....0Z R 13.525 [0.12] E 2012yCat.1322....0Z G 13.5800 [0.0560] C 2018yCat.1345....0G J 11.703 [0.023] C 2003yCat.2246....0C H 11.195 [0.026] C 2003yCat.2246....0C K 11.002 [0.022] C 2003yCat.2246....0C g 14.925 [0.35] D 2012yCat.1322....0Z r 14.624 [0.46] D 2012yCat.1322....0Z i 14.167 [0.42] D 2012yCat.1322....0Z	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!).

4U 1813+50	H 1814+498	SBC9 1041	2XMM J181613.3+495203
2A 1815+500	H 1816+49	SWIFT J1816.1+4951	2XMMi J181613.3+495203
3A 1815+498	INTREF 895	TIC 366122523	XSS J18164+5004
AN 28.1923	LAMOST J181613.21+495205.2	2U 1808+50	[BAG2012] 274.0939+49.8605
1AXG J181611+4952	2MASS J18161324+4952048	3U 1809+50	[BM83] X1814+498
1E 1815.0+4948	2MAXI J1816+498	4U 1814+50	[FS2003] 0963
2E 4051	PBC J1816.0+4952	UCAC4 700-061864	[GKL99] 352
2E 1814.9+4951	PLX 4200.04	USNO 551	AAVSO 1813+49
1ES 1814+49.8	PM J18162+4952	V* AM Her	Gaia DR3 2123837555230207744
2EUVE J1816+49.8	ROTSE1 J181613.28+495205.0	WEB 15248	Gaia DR2 2123837555230207744
EUVE J1816+49.8	RX J1816.2+4952	WISEA J181613.20+495205.0
1H 1814+498	1RXS J181613.8+495203	WISE J181613.20+495205.0

References (946 between 1850 and 2023) (Total 946) 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 : V* AM Her

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