17491+5047 CHR 65 Aa,Ab (30 Dra)
17h 49m 04.33s +50° 46' 50.0" P.A. 112.00 sep 0.1 mag 5.02, Sp A2V dist. 66.53 pc (217.02 l.y.)
| Coord 2000 | 17491+5047 | Discov num | CHR 65 | Comp | Aa,Ab | Coord arcsec 2000 | 17 49 04.33 +50 46 50.0 | ||||
| Date first | 1985 | Date last | 1985 | Obs | 1 | ||||||
| Pa first | 112 | Pa last | 112.2 | P.A. Now (θ) | 112.2° | ||||||
| Sep first | 0.1 | Sep last | 0.122 | Sep. Now (ρ) | 0.122" | ||||||
| Mag pri | 5.02 | Mag sec | delta mag (ΔM) | Spectral class | A2V (white) | ||||||
| Pri motion ra | -048 | Sec motion ra | |||||||||
| Pri motion dec | +211 | Sec motion dec | |||||||||
| Notes | N X (See Notes, Dubious double) | ||||||||||
17491+5047 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 30 Dra | 30591 | 17 49 04 +50 46 50 | CHR 65 Aa,Ab | 1985 | 1 | 112 | 0.1 | 5.02 | <=== | |||
| Show | 30591 | 17 49 04 +50 46 50 | LEP 86 AB | 2000 | 1 | 141 | 209.1 | 5.02 | 16.96 | 11.94 |
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name | 30 Dra | Constellation | Draco | SAO | 30591 | HIP | 87212 | ||||
| Tycho2 | 3523-01685-1 | HD | 162579 | HR | 6656 | GC | 24221 | ||||
| BD | BD+50 2468 | Flamsteed | 30 Draconis | Flamsteed name | 30 Dra | FK5 | 3416 | ||||
| Distance | 66.53 | Distance ly | 217.02 |
WDS 17491+5047 CHR 65 Aa,Ab (30 Dra) : NOTES
| discov_num | notes | refcode |
| CHR 65 | Aa,Ab: 30 Dra. Hipparcos Acceleration Double Solution. | |
| This system, first announced by McAlister and recalled in a later | McA1984b | |
| McAlister paper after repeated attempts at confirmation, has been | McA1993 | |
| restored. While perhaps still spurious, the subsequent confirmation or | ||
| suspected duplicity (by another technique) makes the discovery | ||
| measurement somewhat more probable. |
REFERENCES
| refcode | metd | author | reference |
| McA1984b | Sc j | McAlister, H.A. & Hartkopf, W.I. | ................... |
| McA1984b | Catalog of Interferometric Measurements of Binary Stars, CHARA Contrib. #1, 1984 | ||
| McA1984b | (previously unpublished KPNO 2.1m and 3.8m data) | ||
| McA1993 | Sc j | McAlister, H.A., Mason, B.D., Hartkopf, W.I., & Shara, M.M. | 1993AJ....106.1639M |
| McA1993 | +orb | AJ 106, 1639, 1993 |
DISCOVERER
| idgroup | discov | author |
| 1 | CHR | Center for High Ang. Res. Astronomy (speckle interferometry systems) |
| 3 | LEP | Lepine, S., Wallace, D., Shara, M., Moffat, A., & Niemela, V. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 17491+5047 | CHR 65 | Aa,Ab | 1985 | 1 | 112 | 0.1 | 5.02 | A2V | N | 174904.33+504650.0 | |
| 17491+5047 | CHR 65 | Aa,Ab | 1990 | 3 | 26 | 0.1 | 5.02 | A2V | N | 174904.33+504650.0 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 17491+5047 CHR 65 Aa,Ab (30 Dra) : VISUAL OBSERVATIONS REPORTS
WDS 17491+5047 CHR 65 Aa,Ab (30 Dra) : MEASURES
WDS 17491+5047 (30 Dra) : VIRTUAL EYEPIECE
|
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
WDS 17491+5047 (30 Dra) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
Not valid ID.
Error -27220
Not valid ID.