R Lep


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. Combined General Catalogue of Variable Stars (Vol. I-III)


catalogues and names R Lep, HR 1607, HD 31996, SAO 150058

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)


object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 4h 59min 36,5sec DEC: -14 48' 21''
position (J1900) RA: 4h 55min 3,2sec DEC: -14 57' 24''
proper motion (J2000) RA: 0,021 arcsec/a DEC: 0,02 arcsec/a
radial velocity 32 km/s
note: variable radial velocity

magnitude

visual magnitude 7,71
(V on UBV Johnson system)

spectral / color information

spectral class C6IIe
B-V-magnitude 5,74
R-I-magnitude 1,47

variability information

variable star identification R Lep
note (category: variability): M 5.5 - 11.7v. Period has varied between 418 and 441d: since JD 2436000, 427.07d; max. mag. varies in period possibly over 40y.

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 4h 59min 36,315sec DEC: -14 48' 22,13'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0002 arcsec/a DEC: 0,006 arcsec/a source: 25
radial velocity 32 km/s source: 25
galactic coord. (B1950) longitude: 214,33 latitude: -31,33
GCI unit vector (J2000) X: 0,251833 Y: 0,933421 Z: -0,255549

magnitude:

visual 8,08 (observed) source: 20
photovisual 7,3 source: 16

spectral information:

spectral class N8 source: 29
Morgan-Keenan C7,4e source: 25
B-magnitude 13,78 0,449 B-V-magnitude 5,7
U-magnitude 15,18 U-B-magnitude 1,4

variability information:

source of data: 30
variability type 180
var. amplitude 6,2
var. period 427,07
var. epoch 2442506
3. April 1975, 12:00:00 UT
next max light 2451901,54
23. December 2000, 00:57:36 UT

sources:

16 PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
20 Catalogue of Homogeneous Means in the UBV System
Mermilliod, J.C., Catalogue of Homogeneous Means in the UBV System, Institut d'Astronomie, Universite de Lausanne, 1994
25 Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
29 SAOJ2000
SAO on FK5 at J2000, 1989
30 GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 4h 57min 19,727sec DEC: -14 52' 47,48'' 0,046 arcsec
position (J2000) RA: 4h 59min 36,473sec DEC: -14 48' 20,49''
proper motion J1950 (FK4) RA: 0,001 arcsec/a DEC: 0,02 arcsec/a 0,008 arcsec/a in RA
0,009 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0015 arcsec/a DEC: 0,02 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6 (accuracy: 1 decimal)
source of visual magnitude data Source cited in source catalog introduction.

spectral information:

spectral class N8
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Variable star in visual magnitude in source catalog

catalogues

source catalogue GC, catalogue number: 6093
Durchmusterung BD-15 915
Boss General Catalogue 6093
Henry Draper Catalogue 31996

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (J1950) RA: 4h 57min 19,7sec DEC: -14 52' 47''

variability informations:

variability type M pulsating variable star
magnitute at max. brightness 5,5
magnitute at min. brightness 11,7
photometric system visual, photovisual or Johnson's V
epoch for maximum light [JD] 2442506
3. April 1975, 12:00:00 UT
period [d] 427,07
next maximum light [JD] 2451901,54
23. December 2000, 00:57:36 UT
rising time 55 % of period

spectral information

spectral class C7,6e(N6e)

references

to a study the main characteristics of the star was determined by the authors themselves
to a chart/photograph Vol. I GCVS (see Kholopov et al. 1985-1988)

miscanellous

ID in the GCVS catalogue 48/1
constellation Lepus
notes on existence The star is equivalent to '0480002 S'.
There are notes in published catalog.

variability type description

variability type description
M Mira (Omicron) Ceti-type variables. These are long-period variable giants with characteristic late-type emission spectra (Me, Ce, Se) and light amplitudes from 2.5 to 11 mag in V. Their periodicity is well pronounced, and the periods lie in the range between 80 and 1000 days. Infrared amplitudes are usually less than in the visible and may be <2.5 mag. For example, in the K band they
usually do not exceed 0.9 mag. If the amplitudes exceed 1 - 1.5 mag , but it is not certain that the true light amplitude exceeds 2.5 mag, the symbol "M" is followed by a colon, or the star is attributed to the semiregular class with a colon following the symbol for that type (SR).