l Serpentis
catalogues and names
| catalogues and names | l Ser, NSV 07246, 27 Ser, HR 5868, HD 141004, SAO 121186, BD +7 3023 |
| constellation | Serpens |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 15h 46min 26.6sec | DEC: +7° 21' 11'' | ||
| position (B1900) | RA: 15h 41min 35.3sec | DEC: +7° 39' 59'' | ||
| proper motion (J2000) | RA: -0.223 arcsec/a | DEC: -0.067 arcsec/a | ||
| radial velocity | -66 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
|||
| rotational velocity | =<6 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.094 arcsec | |||
| galactic coordinates | longitude: 15.7° | latitude: 44.1° | ||
magnitude
| visual magnitude | 4.43 (V on UBV Johnson system) |
spectral / color information
| spectral class | G0-V |
| B-V-magnitude | 0.6 |
| U-B-magnitude | 0.11 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 7246 |
double/multiple star system information
| note (category: spectroscopic binaries): | 1837d, K 2.8k/s, V0 -6.7k/s, asini 59.1. Orbit questioned by Morbey and Griffin (1987, ApJ, 317, 343). |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 15h 46min 26.618sec | DEC: +7° 21' 10.84'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: -0.0149 arcsec/a | DEC: -0.074 arcsec/a | source: 25 | |
| radial velocity | -66 km/s | source: 25 | ||
| trigonometric parallax | 0.094 arcsec | ±0.009 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 15.7° | latitude: 44.1° | ||
magnitude:
| visual | 4.43 (observed) | source: 25 |
| photovisual | 4.4 | source: 2 |
| photographic | 5.1 | source: 16 |
spectral information:
| spectral class | G0 | source: 96 | |
| Morgan-Keenan | G0-V | source: 25 | |
| B-magnitude | 5.03 ±0.05 | B-V-magnitude | 0.6 |
| U-magnitude | 5.14 ±0.05 | U-B-magnitude | 0.11 |
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 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 15h 44min 0.829sec | DEC: +7° 30' 30.7'' | ±0.015 arcsec |
| position (J2000) | RA: 15h 46min 26.606sec | DEC: +7° 21' 11.43'' | |
| proper motion B1950 (FK4) | RA: -0.0151 arcsec/a | DEC: -0.068 arcsec/a | ±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0149 arcsec/a | DEC: -0.067 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | G0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 21201 |
| Durchmusterung | BD+07 3023 |
| Boss General Catalogue | 21201 |
| Henry Draper Catalogue | 141004 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 15h 44min 0.8sec | DEC: +7° 30' 31'' |
variability informations:
| magnitute at max. brightness | 4.39 |
| magnitute at min. brightness | 4.44 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | G0 |
references
| to a study | 0225D (designation: LAMBDASER) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |