Lalande 39866

Query : Lalande 39866

Basic data :
HD 196795 -- BY Dra 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: 		* (2015ApJS,HD,...), PM* (2013MNRAS,Ci,...), ** (1997A&AS,**,...), SB* (2018A&A,SBC9), BY* (2017ARep), V* (V*), X (1RXS), NIR (2MASS), MIR (WISEA), IR (IRAS)
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) : 		20 39 37.70965 +04 58 19.3401 (Optical) [ 29.86 24.85 98 ] 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] : 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) : 		20 37 05.44076 +04 47 36.8819 [ 29.86 24.85 98 ]
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) : 		050.66347499 -21.32530174 [ 29.86 24.85 98 ]
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 : 		863.38 76.29 [3.40 2.83 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) -40.86 [0.14] / z(spectroscopic) -0.000136 [0.000000] / cz -40.86 [0.14]
   (Opt) A 2018A&A...619A..81H
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): 		59.80 [3.42] 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: 		K5V B 1989ApJS...71..245K
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) :
U 10.218 [~] C 2010MNRAS.403.1949K
B 9.084 [~] C 2010MNRAS.403.1949K
V 7.842 [~] C 2010MNRAS.403.1949K
R 7.065 [~] C 2010MNRAS.403.1949K
G 7.644552 [0.003975] C 2022yCat.1355....0G
I 6.382 [~] C 2010MNRAS.403.1949K
J 5.509 [0.021] C 2003yCat.2246....0C
H 4.899 [0.016] C 2003yCat.2246....0C
K 4.739 [0.018] C 2003yCat.2246....0C
i 7.322 [0.12] E 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 Simbad points in this preview
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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!). sed-help-icon

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

The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 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 (55) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 196795 GEN# +1.00196795 MCC 821 UBV 17915
** KUI 99 G 24-23 NLTT 49643 UBV M 25047
** KPR 99 GJ 795 PLX 4920 UCAC4 475-121310
AG+04 2784 GSC 00519-00866 PM 20371+0448 USNO-B1.0 0949-00541494
AGKR 18470 HIC 101955 PM J20396+0458E V* OQ Del
ASCC 1169175 HIP 101955 PMSC 20346+0437 VVO 232
BD+04 4510 IDS 20346+0437 AB PPM 170462 WDS J20396+0458AB
CCDM J20396+0458AB IRAS 20371+0447 1RXS J203937.3+045809 WEB 18426
Ci 20 1219 LAL 39866 SAO 126068 WISEA J203938.22+045820.2
CSI+04 4510 2 LFT 1556 SBC9 3632 YZC 20 7215
CSI+04 4510 1 LHS 3568 SKY# 39140 YZ 4 7215
DO 6900 LSPM J2039+0458 SRS 16283 Gaia DR3 1735416587180214528
GC 28771 LTT 16032 StKM 2-1459 Gaia DR2 1735416587178908544
GCRV 12938 2MASS J20393775+0458192 TIC 466779616

References (168 between 1850 and 2024) (Total 168)
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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Collections of Measurements


velocities : 10    V* : 1    distance : 1    ROT : 1    Fe_H : 4    PLX : 2    PM : 9    MK : 15   

   

Observing logs


herschel : 4   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Lalande 39866

Link by name to the catalogue in VizieR :

HD 196795 AG+04 2784 BD+04 4510 CCDM J20396+0458AB DO 6900
G 24-23 GJ 795 GSC 00519-00866 HIC 101955 HIP 101955
IRAS 20371+0447 LHS 3568 LSPM J2039+0458 2MASS J20393775+0458192 NLTT 49643
PLX 4920 PPM 170462 1RXS J203937.3+045809 SAO 126068 UCAC4 475-121310
USNO-B1.0 0949-00541494 V* OQ Del WDS J20396+0458AB WISEA J203938.22+045820.2 YZC 20 7215
Gaia DR3 1735416587180214528 Gaia DR2 1735416587178908544

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