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Table name: GCVS Records: 28480 Version: 1991, 4th edition Spectral Band: OPT Kind of Object: Variable Star Mode: PreView: Coordinates: J2000
The list of references may be found in [1]-[3]. The improved system of variable star classification is also described in [1], with some agenda in [2]-[3].
The magnitudes in maximum and minimum light are in the color system indicated after them and are usually rounded to two decimals after the decimal point in the case of photoelectric observations and to one decimal in other cases. Sometimes instead of the magnitude in minimum light its brighter limit, preceded by the opening bracket, or the light amplitude (in brackets) are presented.
The epoch, as a rule, corresponds to maximum light for pulsating variables (excluding RV stars), (alp) CVn stars, novae, and to minimum light for eclipsing and ellipsoidal variables RV Tau stars, the cycle length for recurrent novae and U Gem stars may be given in brackets, in the position of the period.
Name Type Meaning
constll i2 Constellation numeric code
number i4 Star number within the constellation
compnt A1 Component identification
name c8 Variable Star Designation
n_flag c1 Rif there is a note in the printed version
ra_ori f Right ascension for 1950
dec_ori f Declination for 1950
prc_ra f7.2 Annual precession in RA for equinox 1950.0
prc_dec f6.3 Annual precession in DEC for equinox 1950.0
g_lon f6.2 Galactic Longitude
g_lat f6.2 Galactic Latitude
ref1 A5 First reference
ref2 A5 Second reference
type A9 Variability Classification, or synonyms for duplicate
entries
mxmag f7.3 Maximum magnitude
mxmag_l A1 ")" if maxmag is a faint limit
mxmag_q A1 ":" if maxmag is approximate or questionable
mnmag f6.3 Minimum magnitude
mnmag_l A1 "(" if minmag is an upper limit in luminosity
mnmag_s A1 Code fro alternate system of differential mag.
mnmag_q A1 ":" if minmag approximate or questionable
mnmag_d A1 ")" if minmag is a differential magnitude
mag_code A1 Code for photometric system, see ADC document
epc d14 Epoch for maximum light, Julian days
epc_q A1 ":","+" or "-"; see also ADC doc.
":" epoch is uncertain
"+" epoch may be later than that reported
"-" epoch may be earlier than that reported.
year_nova A6 Year of outburst for nova, in parentheses
year_nva_q A1 "|:" if year of nova outburst is uncertain
per d16 Period of the variable star
per_lim A1 Code for upper or lower limits:
">" or "<;" if period is a lower or upper limit
respectively "(" the period is the mean cycle time of
a U Gem or recurrent nova
per_q A1 ":" if period is approximate or questionable
per_f A1 "N" for `unknow at present'
shape i3 Rising time (M-m) or duration of eclipse (D) These
values (given in units of 1.0% of the period) help to
define the shape of the light curve
shape_q A1 ":" if shape is questionable or approximate
shape_f A1 "*" if duration of the light constancy phase at minimum light (d) for an eclipsing variable is equal to zero.
sp A17 Spectral type
var_f A1 "=" if the variable is equivalent to another cataloged
variable (the identification of the other variable
will be in sp) "N" if the object does not exist.
ra i J2000 Right Ascension
dec i J2000 Declination
lii i Galactic Longitude
bii i Galactic Latitude
ACV alf2 CVn IS Rapid Irregular BCEP beta Cep L slow irregular BLLAC BL Lac LB slow late-type irregular BY BY Dra M Mira CEP Long-period Cepheid N Nova CST constant NL nova=like CW W Vir QSO Quasar DCEP delta Cep (Classical Cepheid)RCBType R CrB DSCT delta Sct RR Type RR Lyr E Eclipsing binary RRC RR Lyr, P 0.3d EA Algol-type ecl binary RVRV Tau (supergiants) EB beta Lyr-type eclipsing bin.S rapid variable ELL ellipsoidal SDOR Type S Dor EW W UMa-type ecl binary SRsemi-regular GCAS Type gamma Cas SN Supernova I Irregular UG Type U Gem IA Irregular of early-type UV Type UV Cet (flare) IN Irregular in nebula UVN UV Cet-type in nebula INS Rapid irr in nebula ZANDZ And-type symbiotic star INT T Tau-type irregular ZCAM Type Z Cam ZZC Type ZZ Cet