m Velorum
| catalogues and names | m Vel, HR 4216, HD 93497, SAO 222321, WDS 10468-4925 |
| constellation | Vela |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 10h 46min 46,2sec | DEC: -49° 25' 12'' |
| position (J1900) | RA: 10h 42min 28sec | DEC: -48° 53' 30'' |
| proper motion (J2000) | RA: 0,074 arcsec/a | DEC: -0,048 arcsec/a |
| radial velocity | 6 km/s note: spectroscopic binaries |
|
| dynamical parallax | 0,022 arcsec | |
magnitude
| visual magnitude | 2,69 (V on UBV Johnson system) |
spectral / color information
| spectral class | G5III+G2V |
| B-V-magnitude | 0,9 |
| U-B-magnitude | 0,57 |
| R-I-magnitude | 0,49 |
double/multiple star system information
| separation | 1,7 arcsec |
| mag difference (of double or brightest multiple) | 3,7 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | 2.7 G5III, 6.4 G2V, 116.24y, a = 1.437". Secondary also classified F8:V:. |
miscellaneous information
| note (category: group membership): | Sirius group? |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 10h 46min 46,314sec | DEC: -49° 25' 12,06'' | ±0,19 arcsec | source: 16 |
| proper motion (J2000) | RA: 0,0086 arcsec/a | DEC: -0,049 arcsec/a | source: 25 | |
| radial velocity | 6 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 283,03° | latitude: 8,57° | ||
| GCI unit vector (J2000) | X: -0,617585 | Y: 0,204331 | Z: -0,759499 | |
magnitude:
| visual | 2,69 (observed) | source: 25 |
| photovisual | 2,8 | source: 2 |
| photographic | 3,6 | source: 2 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G5III+G2V | source: 25 | |
| B-magnitude | 3,59 ±0,05 | B-V-magnitude | 0,9 |
| U-magnitude | 4,16 ±0,05 | U-B-magnitude | 0,57 |
double/multiple star system information:
| separation between brightest and second brightest component | 2,1 arcsec |
| magnitude difference between brightest and second brightest component | 3,5 |
| position angle | 51 ° |
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 | |
| 19 | WDS Catalog |
| Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996 | |
| 25 | Bright Star Catalogue, 5th edition |
| Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 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 (J1950) | RA: 10h 44min 36,818sec | DEC: -49° 9' 19,66'' | ±0,017 arcsec |
| position (J2000) | RA: 10h 46min 46,194sec | DEC: -49° 25' 12,29'' | |
| proper motion J1950 (FK4) | RA: 0,0072 arcsec/a | DEC: -0,05 arcsec/a | ±0,003 arcsec/a in RA ±0,003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,0075 arcsec/a | DEC: -0,048 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 2,8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | G5 |
| source of spectral data | Taken from the HD with M stars reclassified by Miss Cannon. |
catalogues
| source catalogue | FK3, catalogue number: 408 |
| Durchmusterung | CD-48 5913 |
| Boss General Catalogue | 14842 |
| Henry Draper Catalogue | 93497 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 10h 46,8min | DEC: -49° 25' |
| proper motion (J2000) | RA: 0,084 arcsec/a | DEC: -0,049 arcsec/a |
double/multiple star system information:
| component | year | number of measures | position angle | angular separation | magnitude of 1st component | magnitude of 2nd component | spectral class(es) | discoverer code |
| - | 1880 | 40 | 55° | 2,8'' | 2,7 | 6,2 | G5III+G2V | R 155 |
| 1995 | 51° | 2,1'' |
discoverer information:
| discoverer code | discoverer | reference |
| R 155 | Russell, H.C. | - |
notes:
| note | Mu Vel. P = 138yr., a = 1.43", motion direct. A is a spectroscopic binary. |