GJ 644B

Query : GJ 644B C.D.S. - SIMBAD4 rel 1.5.6 - 2016.07.30CEST04:08:44

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


Basic data :
HD 152751 -- 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:
* (BD,CSI,...), PM* (Ref,Ci,...), X (1E,2E,...), ** (**,CCDM,...), IR (DENIS,IRAS,...), UV (2EUVE,EUVE,...), SB* (Ref,SBC9), Fl* (Ref,[GKL99]), V* (V*), Rad (1C)
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
16 55 28.75758 -08 20 10.7876 (Optical) [ 58.66 31.02 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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
16 55 28.758 -08 20 10.79 [ 58.66 31.02 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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
16 52 48.43 -08 14 43.2 [ 335.44 185.99 0 ]
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 epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
011.0446 +21.1411 [ 58.66 31.02 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 :
-825.84 -873.53 [6.68 3.53 0] 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) 14.89 [0.05] / z(~) 0.000050 [0.000000] / cz 14.89 [0.05]
   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):
161.41 [5.64] A 2007A&A...474..653V
Spectral type is made of 3 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
  • bibcode : bibcode of the spectral type reference
Spectral type:
M3.5Ve C 1974ApJS...28....1J
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • 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 (11) :
U 11.647 [~] C 2010MNRAS.403.1949K
B 10.593 [~] C 2010MNRAS.403.1949K
V 9.023 [~] C 2010MNRAS.403.1949K
R 7.937 [~] C 2010MNRAS.403.1949K
I 6.565 [~] C 2010MNRAS.403.1949K
J 5.270 [0.037] C 2003yCat.2246....0C
H 4.775 [0.017] C 2003yCat.2246....0C
K 4.403 [0.036] C 2003yCat.2246....0C
g 10.240 [0.34] E 2012yCat.1322....0Z
r 9.112 [0.46] E 2012yCat.1322....0Z
i 7.582 [0.41] E 2012yCat.1322....0Z
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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!).

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 2 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (71) :

V* V1054 Oph GCRV 9743 NLTT 43800 UCAC2 28934778
** KUI 75 GEN# +1.00152751J PLX 3845 UCAC3 164-149663
** LDS 573AB GJ 644 A PM J16554-0820 UCAC4 409-067022
BD-08 4352 GJ 644 B PM 16528-0814 UGP 420
1C 66.01 GJ 644 PPM 200168 uvby98 100152751
CCDM J16555-0820AB GSC 05642-01503 2RE J165530-081936 VVO 249
Ci 20 1013 HD 152751 2RE J1655-081 WARPS J1655.4-0820
CSI-08 4352 3 HIC 82817 RE J1655-081 WDS J16555-0820AB
CSI-08 4352 4 HIP 82817 RE J165530-081943 Wolf 630
CSI-08 4352 1 IDS 16501-0809 AB 1RXS J165529.3-082008 YZ 98 5811
DENIS J165528.9-082007 IRAS 16527-0815 SAO 141439 Zkh 233
1E 1652.7-0815 JP11 2802 SBC9 2684 Zkh 234
2E 3783 LFT 1310 SBC9 2683 [FS2003] 0855
2E 1652.7-0815 LHS 428 SDSS J165528.46-082015.8 [GKL99] 335
1ES 1652-08.2 LPM 623 StKM 2-1281 [GKL99] 334
2EUVE J1655-08.3 LTT 6749 TYC 5642-1503-1 [RHG95] 2661
EUVE J1655-08.3 2MASS J16552880-0820103 UBV 14330 [RHG95] 2662
GC 22805 MCC 782 UBV M 21799

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References (451 between 1850 and 2016)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Measurements (20 types) :


distance : 2    Einstein : 1    Fe_H : 1    GJ : 2    IRAS : 1    ISO : 3    IUE : 17    JP11 : 2    MK : 7    oRV : 6    PLX : 11    PM : 6   
pos : 2    posa : 1    ROT : 1    SAO : 1    UBV : 6    uvby1 : 2    V* : 1    velocities : 7   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : GJ 644B

Link by name to the catalogue in VizieR :

V* V1054 Oph BD-08 4352 CCDM J16555-0820AB DENIS J165528.9-082007 EUVE J1655-08.3
GJ 644 A GJ 644 B GJ 644 GSC 05642-01503 HD 152751
HIC 82817 HIP 82817 IRAS 16527-0815 LHS 428 2MASS J16552880-0820103
NLTT 43800 PPM 200168 2RE J165530-081936 2RE J1655-081 1RXS J165529.3-082008
SAO 141439 SDSS J165528.46-082015.8 TYC 5642-1503-1 UCAC2 28934778 UCAC3 164-149663
UCAC4 409-067022 uvby98 100152751 WDS J16555-0820AB [GKL99] 335 [GKL99] 334

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

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2016.07.30-04:08:44

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