Ross 868

Query : Ross 868
C.D.S. - SIMBAD4 rel 1.7 - 2020.08.03CEST23:21:43

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


Basic data :
Ross 868 -- Eruptive variable 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:
* (GJ,AC,...), PM* (Ref,2016ApJ...817..112S,...), X (Ref,CXOMP,...), ** (**,CCDM,...), V* (ASAS,1SWASP,...), IR (2MASS,WISEA,...), UV (Ref,EUVE,...), Er* (Ref)
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) :
17 19 54.2077035026 +26 30 03.066748964 (Optical) [ 0.0336 0.0395 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) :
17 17 54.0332399535 +26 32 44.170996333 [ 0.0336 0.0395 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) :
049.0615106006542 +30.8760612640908 [ 0.0336 0.0395 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 :
-214.777 351.001 [0.077 0.084 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) -35.119 [0.0020] / z(spectroscopic) -0.000117 [0.000000] / cz -35.12 [0.00]
   (Opt) A 2018A&A...616A...7S
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):
92.9885 [0.0498] 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:
M3.5V B 1991ApJS...77..417K
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 (13) :
B 12.98 [~] E ~
V 11.336 [0.02] D 2012yCat.1322....0Z
R 11.060 [0.03] D 2012yCat.1322....0Z
G 10.1373 [0.0012] C 2018yCat.1345....0G
I 8.420 [0.027] C 2012AcA....62...67K
J 7.273 [0.020] C 2003yCat.2246....0C
H 6.710 [0.031] C 2003yCat.2246....0C
K 6.422 [0.018] C 2003yCat.2246....0C
u (AB) 24.622 [0.977] C 2008ApJS..175..297A
g (AB) 20.441 [0.026] C 2008ApJS..175..297A
r (AB) 18.788 [0.012] C 2008ApJS..175..297A
i (AB) 18.241 [0.029] C 2008ApJS..175..297A
z (AB) 17.698 [0.027] C 2008ApJS..175..297A
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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 ) :

: 2 : 833 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (46) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

GJ 669 A GEN# +9.80170035 RBS 1637 V* V647 Her
** OSV 5A G 170-35 Ross 868 WDS J17199+2629A
AC +26 41991-0 HAT 239-00221 1RXS J171953.4+262958 WEB 14314
ASAS J171954+2630.0 HIC 84794 SDSS J171954.30+262957.9 WISEA J171954.02+263006.7
ASAS J171953+2629.9 HIP 84794 StKM 2-1312a WISE J171954.04+263006.6
ASCC 695520 Karmn J17199+265 SV* SVS 2043 [GKL99] 343
CCDM J17199+2630A LSPM J1719+2630E 1SWASP J171954.21+263003.0 [RHG95] 2744
CSI+26-17179 2 LTT 15139 TYC 2082-2076-1 [ZEH2003] RX J1719.8+2629 3
CXOMP J171954.1+263003 2MASS J17195422+2630030 UCAC2 41211598 Gaia DR2 4574048021719710848
EUVE J1719+26.4 NLTT 44616 UCAC4 583-056831 Gaia DR1 4574047948702278400
GALEX 6400461831951878683 PLX 3941 USNO-B1.0 1165-00279422
GCRV 10012 PM J17199+2630W USNO 644

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References (143 between 1850 and 2020) (Total 143)
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 : 4    velocities : 7    PM : 6    Fe_H : 3    PLX : 5    MK : 8    V* : 7   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Ross 868

Link by name to the catalogue in VizieR :

GJ 669 A CCDM J17199+2630A EUVE J1719+26.4 G 170-35 HIC 84794
HIP 84794 LSPM J1719+2630E 2MASS J17195422+2630030 NLTT 44616 PLX 3941
1RXS J171953.4+262958 SDSS J171954.30+262957.9 TYC 2082-2076-1 UCAC2 41211598 UCAC4 583-056831
USNO-B1.0 1165-00279422 V* V647 Her WDS J17199+2629A WISEA J171954.02+263006.7 WISE J171954.04+263006.6
[GKL99] 343 Gaia DR2 4574048021719710848 Gaia DR1 4574047948702278400

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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2020.08.03-23:21:43

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