HR 7955

C.D.S. - SIMBAD4 rel 1.7 - 2018.11.16CET07:56:45

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


Basic data :
HD 198084 -- Spectroscopic binary
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:
*i* (), * (HD,AG,...), ** (CCDM,IDS,...), PM* (LSPM,LTT,...), SB* (Ref,SBC9), IR (IRAS,2MASS), UV (TD1)
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) :
20 45 21.1287886 +57 34 47.007968 (Optical) [ 0.44 0.41 90 ] A 2007A&A...474..653V
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
FK5 coord. (ep=J2000 eq=2000) :
20 45 21.1287886 +57 34 47.007968 [ 0.44 0.41 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
FK4 coord. (ep=B1950 eq=1950) :
20 44 06.6275619 +57 23 58.966687 [ 24.50 23.00 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) :
094.4292274516 +09.0557955008 [ 0.44 0.41 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 :
-62.32 -236.00 [0.49 0.46 90] A 2007A&A...474..653V
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) -32.82 [0.04] / z(~) -0.000109 [0.000000] / cz -32.82 [0.04]
   A 2004A&A...424..727P
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):
36.64 [0.48] A 2007A&A...474..653V
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:
F8IV-V+F9IV-V C 2010AJ....139.2308F
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) :
B 5.05 [~] C ~
V 4.51 [~] C ~
R 4.2 [~] E 2003AJ....125..984M
I 3.9 [~] E 2003AJ....125..984M
G 4.2530 [0.0058] C 2018yCat.1345....0G
J 3.679 [0.234] D 2003yCat.2246....0C
H 3.496 [0.210] D 2003yCat.2246....0C
K 3.267 [0.242] D 2003yCat.2246....0C
SIMBAD with radius arcmin
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within radius 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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (40) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 198084 GSC 03959-01685 N30 4591 TD1 27270
AG+57 1392 HIC 102431 NLTT 49862 TYC 3959-1685-1
ASCC 209563 HIP 102431 PLX 4963 UBV 18006
BD+57 2240 HR 7955 PLX 4963.00 UBV M 25166
CCDM J20454+5735A IDS 20429+5713 A PMC 90-93 551 USNO-B1.0 1475-00394362
FK5 782 IRAS 20441+5723 PPM 38840 uvby98 100198084
GC 28956 JP11 3279 ROT 3038 WDS J20454+5735Aa,Ab
GCRV 13019 LSPM J2045+5734 SAO 32862 WEB 18550
GEN# +1.00198084 LTT 16071 SBC9 1489 YZ 57 11625
GJ 9706 2MASS J20452110+5734469 SKY# 39341 Gaia DR2 2190258605988673536

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References (9 between 2014 and 2019) (Total 152)
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 :

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                 or select by : (not exhaustive, explanation here)


Collections of Measurements


distance : 1    velocities : 9    ROT : 2    PM : 7    Fe_H : 9    PLX : 4    MK : 15   

   

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     |
 -----------------------------------------------------------------------
 |   27.1547  pc  |  -0.3804     +0.3804  |paral   |2018yCat.1345....0G|
 

velocities (9)

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |  -32.57        0.58   |A (  11)|s , ,O   ,           |          |       |  |2018yCat.1345....0G|
 

rot (2)

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

pm (7)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |  -63.239[    1.206]| -235.481[    0.963]|ICRS|2018yCat.1345....0G|
 

fe_h (9)

 |Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 -----------------------------------------------------------
 | 6249       |        |SUN      |     |2011A&A...530A.138C|
 

plx (4)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
m|  36.87    :   0.46       |1997A&A...323L..49P|
 

mk (15)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |G0IV                                |1970ApJS...19..281B|
 
Observing logs


ISO : 4    herschel : 2    IUE : 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)

iso (4)

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 (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 0.017 28300154 PHT03 3.08 25.08 GL9706 1996-08-25T16:07:27 414 12006 52" D 311.3379 +57.5800 RSTENCEL VEGADIS5 2 0.017 28300184 PHT22 54.76 71.44 GL9706 1996-08-25T16:15:05 454 12007 135.5"x135.5" 311.3379 +57.5800 RSTENCEL VEGADIS5 3 0.018 88300801 SWS99 -1.00 -1.00 HR7955 F8IV-V 1998-04-16T12:55:49 2352 36484 14"x20" 311.3375 +57.5798 SWS_CAL 6999IB33 4 1.005 28300124 PHT03 8.33 25.08 GL9706 1996-08-25T16:00:21 362 12005 52" D 311.3587 +57.5923 RSTENCEL VEGADIS5

herschel (2)

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]
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 0.0002 1110 HIP102431 20 45 21.13 +57 34 47.0 OT2_gkennedy_2 PacsPhoto 445 2012-05-27T19:17:02 1342246190 get Herschel/PACS observation #1342246190 HIP102431_110 2 0.0002 1110 HIP102431 20 45 21.13 +57 34 47.0 OT2_gkennedy_2 PacsPhoto 445 2012-05-27T19:08:34 1342246189 get Herschel/PACS observation #1342246189 HIP102431_70

iue (2)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 198084       :            |LEGTS|41|L SWP 24584 L|  333 FU|841130 081700|003600| |X31|G|E=49,C=3X,B=27      |*|1996IUEML.C......0I|
 

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : HR 7955

Link by name to the catalogue in VizieR :

HD 198084 AG+57 1392 BD+57 2240 CCDM J20454+5735A FK5 782
GJ 9706 GSC 03959-01685 HIC 102431 HIP 102431 HR 7955
IRAS 20441+5723 LSPM J2045+5734 2MASS J20452110+5734469 NLTT 49862 PLX 4963
PPM 38840 SAO 32862 TD1 27270 TYC 3959-1685-1 USNO-B1.0 1475-00394362
uvby98 100198084 WDS J20454+5735Aa,Ab Gaia DR2 2190258605988673536

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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 .
The list of all annotations to SIMBAD objects can be found here .

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2018.11.16-07:56:49

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