eta aql

Query : eta aql

Basic data :
* eta Aql -- Classical Cepheid 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:
* (*,AG,...), IR (IRAS,IRC,...), cC* (2019Sci), ** (**,WDS), V* (V*,AAVSO), MIR (WISEA,WISE), UV (TD1), 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 52 28.3689223781 +01 00 20.371980515 (Optical) [ 0.1507 0.1131 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
FK5 coord. (ep=J2000 eq=2000) :
19 52 28.3704506278 +01 00 20.393820619 [ 0.1507 0.1131 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
FK4 coord. (ep=B1950 eq=1950) :
19 49 55.5290752762 +00 52 33.343733431 [ 0.1507 0.1131 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) :
040.9343315128899 -13.0726458932619 [ 0.1507 0.1131 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 :
8.890 -8.322 [0.177 0.136 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) 10.82 [0.55] / z(spectroscopic) 0.000036 [0.000002] / cz 10.82 [0.55]
   (Opt) A 2022yCat.1355....0G
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):
3.6715 [0.1942] 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:
F6Iab+B9.8V C 2013AJ....146...93E
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 (8) :
U 5.12 [~] C 2002yCat.2237....0D
B 4.61 [~] C 2002yCat.2237....0D
V 3.80 [~] C 2002yCat.2237....0D
G 3.747671 [0.014172] C 2022yCat.1355....0G
I 3.030 [~] D 2006MNRAS.369..723N
J 2.353 [0.202] D 2003yCat.2246....0C
H 1.886 [0.196] D 2003yCat.2246....0C
K 1.794 [0.216] 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 Simbad points in this preview
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sedIcon
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!).
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (42) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eta Aql HD 187929 PPM 168843 V* eta Aql
* 55 Aql HIC 97804 RAFGL 5437S WDS J19525+0100A
** KRV 27A HIP 97804 ROT 2863 WEB 17207
** EVS 2A HR 7570 SAO 125159 WISEA J195228.37+010020.5
AG+00 2415 IRAS 19499+0052 SKY# 37213 WISE J195228.43+010020.5
BD+00 4337 IRC +00457 TD1 25584 YZ 0 5001
FK5 746 2MASS J19522835+0100203 TIC 111010123 AAVSO 1947+00
GC 27517 N30 4395 TYC 480-3027-1 Gaia DR3 4240272953377646592
GCRV 12220 PLX 4679 UBV 21297 Gaia DR2 4240272953376907648
GEN# +1.00187929 PLX 4679.00 UCAC4 456-103989
GSC 00480-03027 PMC 90-93 531 uvby98 100187929

References (46 between 2019 and 2024) (Total 672)
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
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 13    V* : 4    distance : 3    ROT : 1    Fe_H : 9    PLX : 5    PM : 6    MK : 10   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (13)

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |   10.82        0.55   |A (   2)|s , ,O   ,           |          |       |  |2022yCat.1355....0G|
 

v* (4)

 |     vartyp     |    Vmax     p     Vmin    |   period   | epoch (JD)   |D/rt %|     reference     |
 -----------------------------------------------------------------------------------------------------
m|DCEP            |   3.53      V    4.33     |   7.177    |              |      |2009A&A...504..959K|
 

distance (3)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |  272.368   pc  | -14.4066    +14.4066  |paral   |2020yCat.1350....0G|
 

rot (1)

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 |   0     [        ] (   )|D|1970CoKwa.189....0U|
 

fe_h (9)

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |  6000 1.50  | 0.10   |SUN      |     |1981ApJ...245.1018L|
 

plx (5)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
m|   2.78    :   0.91       |1997A&A...323L..49P|
 

pm (6)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   +8.890[    0.177]|   -8.322[    0.136]|ICRS|2020yCat.1350....0G|
 

mk (10)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |G0p                                 |1993yCat.3135....0C|
 
Observing logs


herschel : 3    ISO : 1    IUE : 64   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

herschel (3)

The 1 column in color are computed by VizieR, and are not part of the original data.

Note: (see also the postcard server)

VI/139/herschel
Post annotation
Herschel Observation Log (Herschel Science Centre, 2013) [ReadMe+ftp]
2013yCat.6139....0H

The Herschel Observation Log (37093 rows)
img(gal)
start AladinLite

Full _r OD Target RAJ2000 DEJ2000 Proposal AOT Dur Start ObsId PACS HIFI SPIRE Label arcmin "h:m:s" "d:m:s" s s
1 0.0005 1281 eta Aql 19 52 28.37 +01 00 20.4 OT2_mmarengo_2 SpirePhoto 859 2012-11-15T12:23:46 1342255084 get Herschel/SPIRE observation #1342255084 eta_Aql_SPIRE 2 0.0005 1275 eta Aql 19 52 28.37 +01 00 20.4 OT2_mmarengo_2 PacsPhoto 1163 2012-11-09T03:19:01 1342254744 get Herschel/PACS observation #1342254744 eta_Aql_PACSX 3 0.0005 1275 eta Aql 19 52 28.37 +01 00 20.4 OT2_mmarengo_2 PacsPhoto 1163 2012-11-09T02:58:32 1342254743 get Herschel/PACS observation #1342254743 eta_Aql_PACS

iso (1)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation
ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log[image] (36737 rows) (Note)
img(gal)
start AladinLite

Full _r TDT AOT minLam maxLam Target oStart oLen recno FOV RAJ2000 DEJ2000 cal ObsID abs PropID arcmin um um s s deg deg
1 0.092 88200501 SWS99 -1.00 -1.00 Eta Aql F6Ib 1998-04-15T09:41:18 2352 36459 14"x20" 298.1167 +01.0054 SWS_CAL 6999IB29

iue (64)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 187929       :            |QSBBW|53|L SWP 05701 L|  664 FU|790702 161000|002880| |X02|G|C=2X,B=35           |*|1996IUEML.C......0I|
 

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : eta aql

Link by name to the catalogue in VizieR :

AG+00 2415 BD+00 4337 FK5 746 GSC 00480-03027 HD 187929
HIC 97804 HIP 97804 HR 7570 IRAS 19499+0052 IRC +00457
2MASS J19522835+0100203 PLX 4679 PPM 168843 RAFGL 5437S SAO 125159
TD1 25584 TYC 480-3027-1 UCAC4 456-103989 uvby98 100187929 V* eta Aql
WDS J19525+0100A WISEA J195228.37+010020.5 WISE J195228.43+010020.5 Gaia DR3 4240272953377646592 Gaia DR2 4240272953376907648

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