Ross 248

Query : Ross 248
C.D.S. - SIMBAD4 rel 1.7 - 2018.11.18CET20:41:06

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


Basic data :
Ross 248 -- Variable of BY Dra type
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,ASCC,...), PM* (Ref,Ci,...), IR (IRAS,2MASS,...), V* (V*,CSV), X (1RXS,[FS2003]), Fl* ([GKL99]), BY* (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] : 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) :
23 41 55.0361186415 +44 10 38.825189497 (Optical) [ 0.1018 0.0522 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) :
23 39 26.1892409619 +43 55 19.935716521 [ 7.6507 5.6003 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) :
109.9908908926334 -16.9404143309046 [ 0.1018 0.0522 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 :
112.692 -1592.055 [0.153 0.112 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) -77.715 [0.124] / z(~) -0.000259 [0.000000] / cz -77.70 [0.12]
   (NIR) A 2015ApJ...802L..10T
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):
316.9558 [0.1260] 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:
M5.0V C 2015A&A...577A.128A
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 (8) :
B 14.19 [~] C ~
V 12.28 [~] D 2009ApJ...704..975J
R 11.1 [~] E 2003AJ....125..984M
I 9.0 [~] E 2003AJ....125..984M
G 10.3655 [0.0008] C 2018yCat.1345....0G
J 6.884 [0.026] C 2003yCat.2246....0C
H 6.247 [0.027] C 2003yCat.2246....0C
K 5.929 [0.020] C 2003yCat.2246....0C
SIMBAD with radius arcmin
Interactive AladinLite view
Back
sedIcon
VizieR photometry viewer    sed-help-icon
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 (40) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* HH And G 171-10 NLTT 57692 USNO 275
ASCC 451737 G 190-42 8pc 316.00 USNO 908
Ci 20 1445 GJ 905 PLX 5736 USNO-B1.0 1341-00523884
CSI+43-23394 IRAS 23394+4354 PLX 5736.00 WEB 20625
CSI+43-23394 1 JP11 5182 PM 23394+4355 WISEA J234155.15+441022.1
CSV 5777 LFT 1816 PM J23419+4410 Zkh 353
GAT 1360 LHS 549 RAFGL 905 [FS2003] 1203
GCRV 14848 LSPM J2341+4410 Ross 248 [GKL99] 454
GEN# +6.10010905 LTT 16985 1RXS J234155.0+441047 [RHG95] 3743
GEN# +9.80171010 2MASS J23415498+4410407 UBV M 42997 Gaia DR2 1926461164913660160

Plots and Images

plot

radius arcmin


CDS portal

CDS Simplay
(requires flash)

Aladin applet

References (253 between 1850 and 2019) (Total 253)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


distance : 2    velocities : 5    PM : 9    Fe_H : 9    PLX : 5    MK : 13    V* : 2   

   

Observing logs


ISO : 4    herschel : 3    IUE : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Ross 248

Link by name to the catalogue in VizieR :

V* HH And G 171-10 G 190-42 GJ 905 IRAS 23394+4354
LHS 549 LSPM J2341+4410 2MASS J23415498+4410407 NLTT 57692 PLX 5736
RAFGL 905 1RXS J234155.0+441047 USNO-B1.0 1341-00523884 WISEA J234155.15+441022.1 [GKL99] 454
Gaia DR2 1926461164913660160

Search by coordinates in Vizier (radius: 20 arcsec)


Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
The list of all annotations to SIMBAD objects can be found here .

display existing annotations (2)

add an annotation to this object

report an error concerning the data of this object




Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:Ross 248 and select 'bookmark this link' or equivalent in the popup menu


2018.11.18-20:41:06

© Université de Strasbourg/CNRS

    • Contact