BE Camelopardalis
catalogues and names
| catalogues and names | BE Cam, HR 1155, HD 23475, SAO 12916, BD +65 369 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 3h 49min 31.2sec | DEC: +65° 31' 34'' | ||
| position (B1900) | RA: 3h 40min 21.6sec | DEC: +65° 13' 1'' | ||
| proper motion (J2000) | RA: -0.007 arcsec/a | DEC: -0.013 arcsec/a | ||
| radial velocity | -3 km/s note: variable radial velocity |
|||
| trigonometric parallax | 0.014 arcsec | |||
| galactic coordinates | longitude: 140.02° | latitude: 8.75° | ||
magnitude
| visual magnitude | 4.47 (V on UBV Johnson system) |
spectral / color information
| spectral class | M2+IIab |
| B-V-magnitude | 1.88 |
| U-B-magnitude | 2.13 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
| note (category: spectra): | Ultraviolet FeII emission. |
| note (category: colors): | Large infrared excess. |
variability information
| variable star identification | BE Cam |
| note (category: variability): | Lc 4.35 - 4.48V, amp. 0.12p. |
miscellaneous information
| note (category: group membership): | In reflection nebula. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 3h 49min 31.271sec | DEC: +65° 31' 33.87'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: -0.0006 arcsec/a | DEC: -0.011 arcsec/a | source: 25 | |
| radial velocity | -3 km/s | source: 25 | ||
| trigonometric parallax | 0.014 arcsec | ±0.001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 140.03° | latitude: 8.75° | ||
magnitude:
| visual | 4.3 (observed) | source: 31 |
| photovisual | 4.7 | source: 2 |
| photographic | 6.1 | source: 16 |
spectral information:
| spectral class | M0 | source: 96 | |
| Morgan-Keenan | M2+IIab | source: 25 | |
| B-magnitude | 6.35 ±0.05 | B-V-magnitude | 1.88 |
| U-magnitude | 8.48 ±0.05 | U-B-magnitude | 2.13 |
variability information:
| variability type | 172 |
| var. amplitude | 0.13 |
sources:
| 2 | HD and HDE Catalogs |
| Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University | |
| 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 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 1991 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 30 | GCVS, 4th edition |
| Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
| 31 | CRM' (non-GCVS variable data) |
| Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 1994 | |
| 96 | SAO or HD/HDE Catalog |
| Reference from Value 1 or Reference from Value 2 | |
data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)
position and proper motion:
| position (B1950) | RA: 3h 44min 55.136sec | DEC: +65° 22' 25.86'' | ±0.019 arcsec |
| position (J2000) | RA: 3h 49min 31.212sec | DEC: +65° 31' 33.69'' | |
| proper motion B1950 (FK4) | RA: -0.0006 arcsec/a | DEC: -0.009 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0011 arcsec/a | DEC: -0.013 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.7 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | M0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 4553 |
| Durchmusterung | BD+65 369 |
| Boss General Catalogue | 4553 |
| Henry Draper Catalogue | 23475 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 3h 44min 55.1sec | DEC: +65° 22' 26'' |
variability informations:
| variability type | LC | pulsating variable star |
| magnitute at max. brightness | 4.35 | |
| magnitute at min. brightness | 4.48 | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | M2II |
references
| to a study | Vol. I GCVS (see Kholopov et al. 1985-1988) |
| to a chart/photograph | no chart is avaible, but the star is contained in the 'Bonner Durchmusterung' |
miscanellous
| ID in the GCVS catalogue | 11/83 |
| constellation | Camelopardalis |
| notes on existence | The star is equivalent to '0110084 BF'. |
variability type description
| variability type | description |
| LC | Slow irregular variables. The light variations of these stars show no evidence of periodicity, or any periodicity present is very poorly defined and appears only occasionally. Like for the type I, stars are often attributed to this type because of being insufficiently studied. Many type L variables are really semiregulars or belong to other types. LB Slow irregular variables of late spectral types (K, M, C, S); as a rule, they are giants (CO Cyg). This type is also ascribed, in the GCVS, to slow red irregular variables in the case of unknown spectral types and luminosities. LC Irregular variable supergiants of late spectral types having amplitudes of about 1 mag in V (TZ Cas). |