V* V642 Mon

Query : V* V642 Mon
C.D.S. - SIMBAD4 rel 1.7 - 2019.11.18CET06:17:12

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


Basic data :
V* V642 Mon -- T Tau-type 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:
* (Ref,CoRoT,...), X (CXORRS,2XMM,...), SB* (Ref,CABS,...), V* (V*,ASAS,...), *iC (Cl*,[SBC2004b]), Em* ([KW97]), TT* (Ref), Or* (Ref), Ro* (Ref), IR (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) :
06 40 46.0827536905 +09 49 17.318155831 (Optical) [ 0.0364 0.0363 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] : 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) :
06 38 00.8903597108 +09 52 09.218321903 [ 0.0364 0.0363 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) :
202.9788514373018 +02.1186402417480 [ 0.0364 0.0363 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 :
8.831 -10.135 [0.069 0.061 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) 15.60 [~] / z(~) 0.000052 [~] / cz 15.60 [~]
   D 2006ApJ...648.1090F
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):
4.4822 [0.0418] 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:
K1 D 1997AJ....114.2644S
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 (14) :
U 13.090 [0.025] D 1997AJ....114.2644S
B 12.54 [~] E ~
V 11.835 [0.066] C 2012AcA....62...67K
R 11.259 [0.014] D 1997AJ....114.2644S
I 10.767 [0.040] C 2012AcA....62...67K
G 11.5477 [0.0019] C 2018yCat.1345....0G
J 10.155 [0.024] C 2003yCat.2246....0C
H 9.646 [0.023] C 2003yCat.2246....0C
K 9.558 [0.027] C 2003yCat.2246....0C
u 14.173 [~] D 2014A&A...570A..82V
g (AB) 20.286 [0.103] E 2009yCat.2294....0A
r (AB) 18.544 [0.041] D 2009yCat.2294....0A
i (AB) 18.829 [0.051] D 2009yCat.2294....0A
z (AB) 15.418 [0.019] D 2009yCat.2294....0A
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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!).
Some important notes on this object about identifications and objects associations.
notes:

  • FK Com variable star (see the GCVS).


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

: 1 : 1368 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (28) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* V642 Mon Cl* NGC 2264 WALK 92 NGC 2264 92 [DSP2007] 81
ASAS J064045+0949.4 CoRoT 616849567 SBC9 3541 [FMS2000] X39
CABS 64 CSIMon-000646 SDSS J064046.08+094916.4 [KCP2013] SRa01a 23210
Cl* NGC 2264 LBM 4885 CXORRS J064046.1+094917 UBV M 31893 [KW97] 31-17
Cl* NGC 2264 RMS 2942 GEN# +2.22640092 UCAC2 35177824 [RRS2004] NGC 2264 113
Cl* NGC 2264 SBL 181 GSC 00750-01745 2XMM J064046.1+094918 [SBC2004b] CFHT 181
Cl* NGC 2264 VAS 67 2MASS J06404608+0949173 [BCM2009] 100.1920166+09.8214893 Gaia DR2 3326716637659605760

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References (42 between 1850 and 2020) (Total 42)
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


distance : 1    velocities : 2    ROT : 1    PM : 1    Fe_H : 1    PLX : 1    V* : 3   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* V642 Mon

Link by name to the catalogue in VizieR :

V* V642 Mon CABS 64 CoRoT 616849567 GSC 00750-01745 2MASS J06404608+0949173
SDSS J064046.08+094916.4 UCAC2 35177824 Gaia DR2 3326716637659605760

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2019.11.18-06:17:12

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