HD 181122

Query : HD 181122
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.12CET12:19:12

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
HD 181122 -- 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,...), IR (IRAS,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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 18 52.7521492301 +09 37 05.042646908 (Optical) [ 0.0259 0.0249 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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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 16 29.5922111483 +09 31 33.662787659 [ 2.6501 2.4001 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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
044.6141285221644 -01.6405161643951 [ 0.0259 0.0249 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 :
1.024 -38.230 [0.053 0.048 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) -9.86 [0.17] / z(spectroscopic) -0.000033 [0.000001] / cz -9.86 [0.17]
   (Opt) A 2018yCat.1345....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):
6.1510 [0.0323] 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:
G9III C ~
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 (6) :
B 7.372 [0.015] D 2000A&A...355L..27H
V 6.311 [0.010] D 2000A&A...355L..27H
G 6.0092 [0.0006] C 2018yCat.1345....0G
J 4.689 [0.226] D 2003yCat.2246....0C
H 3.980 [0.186] D 2003yCat.2246....0C
K 3.959 [0.036] C 2003yCat.2246....0C
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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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (21) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 181122 GSC 01046-00323 PPM 167607 WEB 16570
AG+09 2430 HIC 94916 SAO 124497 YZ 9 9159
BD+09 4057 HIP 94916 SKY# 35871 Gaia DR2 4308631412360266368
GC 26636 HR 7325 TYC 1046-323-1
GCRV 11771 IRAS 19164+0931 UBV 16339
GEN# +1.00181122 2MASS J19185275+0937052 UBV M 23665

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References (26 between 1850 and 2019) (Total 26)
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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                Reference summaries :

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                 or select by : (not exhaustive, explanation here)


Collections of Measurements


distance : 1    velocities : 5    PM : 3    PLX : 3    MK : 2   

   

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)

distance (1)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |  162.5752  pc  |  -0.8537     +0.8537  |paral   |2018yCat.1345....0G|
 

velocities (5)

 |typ|    Value    R   m.e.   |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 -------------------------------------------------------------------------------------------------------
 |v  |   -9.86        0.17    |A (  10)|s , ,O   ,           |          |       |  |2018yCat.1345....0G|
 |v  |  -11.7                 |  (   4)|s , ,    ,           |          |       |  |1995A&AS..114..269D|
 |v  |  -11.7         2.0     |E (   4)|s , ,    ,           |          |       |  |1953GCRV..C......0W|
 |V  |  -10.70        0.50    |A (    )|s , ,O   ,           |          |       |  |2006AstL...32..759G|
 |v  |  -10.7                 |  (   4)|  , ,    ,           |          |       |  |1945PDDO....1..311Y|
 

pm (3)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   +1.024[    0.053]|  -38.230[    0.048]|ICRS|2018yCat.1345....0G|
 |   +2.34 [    0.60 ]|  -38.40 [    0.40 ]|ICRS|2007A&A...474..653V|
 |   +2.86 [    0.82 ]|  -37.46 [    0.58 ]|ICRS|1997A&A...323L..49P|
 

plx (3)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |   6.1510  :   0.0323     |2018yCat.1345....0G|
 |   6.31    :   0.84       |1997A&A...323L..49P|
 |   6.99    :   0.57       |2007A&A...474..653V|
 

mk (2)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |G9III                               |1962RGOB...51...79E|
 |P /   |G9III                               |1955ApJ...122..222H|
 

External archives :

Data at NED - NASA/IPAC Extragalactic Database : HD 181122

Link by name to the catalogue in VizieR :

HD 181122 AG+09 2430 BD+09 4057 GSC 01046-00323 HIC 94916
HIP 94916 HR 7325 IRAS 19164+0931 2MASS J19185275+0937052 PPM 167607
SAO 124497 TYC 1046-323-1 Gaia DR2 4308631412360266368

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
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2018.12.12-12:19:12

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