Ross 154

Query : Ross 154
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.12CET09:46:46

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


Basic data :
Ross 154 -- Flare 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,AC,...), PM* (Ref,Ci,...), UV (Ref,2EUVE,...), X (2E,1ES,...), V* (V*,ASAS,...), IR (IRAS,2MASS,...), Fl* (Ref,[GKL99])
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) :
18 49 49.3638007809 -23 50 10.453568573 (Optical) [ 0.0622 0.0567 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] : 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) :
18 46 44.3440838413 -23 53 30.306189376 [ 6.3503 5.2503 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) :
011.3071844307355 -10.2845386679671 [ 0.0622 0.0567 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 :
639.348 -193.550 [0.127 0.105 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) -10.50 [0.1] / z(~) -0.000035 [0.000000] / cz -10.50 [0.10]
   A 2002ApJS..141..503N
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):
336.1228 [0.0641] 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:
M3.5Ve C 2015AJ....149..106D
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 (12) :
U 13.528 [~] C 2010MNRAS.403.1949K
B 12.235 [~] C 2010MNRAS.403.1949K
V 10.495 [~] C 2010MNRAS.403.1949K
R 9.278 [~] C 2010MNRAS.403.1949K
I 7.703 [0.020] C 2012AcA....62...67K
G 9.1259 [0.0008] C 2018yCat.1345....0G
J 6.222 [0.018] C 2003yCat.2246....0C
H 5.655 [0.034] C 2003yCat.2246....0C
K 5.370 [0.016] C 2003yCat.2246....0C
g 11.257 [0.01] D 2012yCat.1322....0Z
r 9.828 [0.01] D 2012yCat.1322....0Z
i 8.377 [0.01] D 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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (51) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* V1216 Sgr EUVE J1849-23.8 LFT 1437 StKM 2-1392
AC -24 2833-183 GALEX 6379711938706803684 LHS 3414 TYC 6859-1332-1
AC -24 2822-183 GCRV 11260 LPM 688 UBV M 42977
ASAS J184948-2350.0 GEN# +6.10010729 LTT 7462 UCAC4 331-182994
CD-23 14742 GEN# +6.10220154 2MASS J18494929-2350101 WEB 15960
Ci 20 1108 GEN# +6.00107462 NLTT 47045 WISEA J184949.85-235012.5
CSI-23-18467 GJ 729 8pc 336.48 Zkh 282
2E 4140 HIC 92403 PLX 4338 [FS2003] 0993
2E 1846.7-2353 HIP 92403 PLX 4338.00 [GKL99] 365
EPIC 215632123 IRAS 18467-2353 PM J18498-2350 [RHG95] 2960
EPIC 215632069 JP11 5166 PPM 734465 AAVSO 1843-23
1ES 1846-23.8 JP11 5192 Ross 154 Gaia DR2 4075141768785646848
2EUVE J1849-23.8 JP11 5165 1RXS J184948.7-235003

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References (296 between 1850 and 2019) (Total 296)
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 : 3    velocities : 5    ROT : 1    PM : 6    Fe_H : 3    PLX : 4    MK : 6    V* : 3   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Ross 154

Link by name to the catalogue in VizieR :

V* V1216 Sgr CD-23 14742 2E 4140 EUVE J1849-23.8 GJ 729
HIC 92403 HIP 92403 IRAS 18467-2353 LHS 3414 2MASS J18494929-2350101
NLTT 47045 PLX 4338 PPM 734465 1RXS J184948.7-235003 TYC 6859-1332-1
UCAC4 331-182994 WISEA J184949.85-235012.5 [GKL99] 365 Gaia DR2 4075141768785646848

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

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2018.12.12-09:46:46

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