04393+2221 KSA 25 AB (HD 284589)
04h 39m 17.80s +22° 21' 03.5" P.A. 184.00 sep 28.1 mag 10.79,12.05 Sp K5
| Coord 2000 | 04393+2221 | Discov num | KSA 25 | Comp | AB | Coord arcsec 2000 | 04 39 17.80 +22 21 03.5 | ||||
| Date first | 1893 | Date last | 2016 | Obs | 5 | ||||||
| Pa first | 185 | Pa last | 183.7 | P.A. Now (θ) | 183.7° | ||||||
| Sep first | 25.8 | Sep last | 28.057 | Sep. Now (ρ) | 28.057" | ||||||
| Mag pri | 10.79 | Mag sec | 12.05 | delta mag (ΔM) | 1.26 | Spectral class | K5 (yellow-orange) | ||||
| Pri motion ra | +009 | Sec motion ra | -004 | ||||||||
| Pri motion dec | +005 | Sec motion dec | -022 | ||||||||
| Notes | N (See Notes) | ||||||||||
04393+2221 SYSTEM COMPONENTS
| Show | name | SAO | coord | wds_name | last | obs | pa | sep | mag1 | mag2 | d_mag | orb | current |
| Show | 04 39 18 +22 21 04 | LKCA 15 Aa,Ab | 2015 | 4 | 274 | 0.1 | 7.00 | 13.00 | 6.00 | ||||
| Show | 04 39 18 +22 21 04 | LKCA 15 Aa,Ac | 2015 | 3 | 312 | 0.1 | 7.00 | 12.50 | 5.50 | ||||
| Show | 04 39 18 +22 21 04 | LKCA 15 Aa,Ad | 2014 | 1 | 14 | 0.1 | 7.00 | 13.00 | 6.00 | ||||
| Show | HD 284589 | 04 39 18 +22 21 04 | KSA 25 AB | 2016 | 5 | 184 | 28.1 | 10.79 | 12.05 | 1.26 | <=== |
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name | HD 284589 | Constellation | Taurus | Tycho2 | 1278-00933-1 | Gaia DR2 | 144936836795636864 | ||||
| HD | 284589 |
WDS 04393+2221 KSA 25 AB (HD 284589) : NOTES
| discov_num | notes | refcode |
| LKCA 15 | Sallum et al. (2015) resolve three planetary companions to LkCa 15. | |
| Companion b has a best-fit orbital semi-major axis 14.7 +/- 2.1 au, | ||
| that of companion c is 18.6 +2.5/-2.7 au. Companion d is only seen in | ||
| the L' band, so less information can be gleaned. | Sll2015b |
REFERENCES
| refcode | metd | author | reference |
| Sll2015b | A j | Sallum, S., Follette, K. B., Eisner, J. A., Close, L. M., Hinz, P., Kratter, K., | 2015Nat...527..342S |
| Sll2015b | Males, J., Skemer, A., Macintosh, B., Tuthill, P., Bailey, V., Defrere, D., et al. | ||
| Sll2015b | Nature 527, 342, 2015 |
DISCOVERER
| idgroup | discov | author |
| 1 | KSA | Kraus, A.L. & Hillenbrand, L.A. |
| 13 | KSA | Kraus, A.L., Ireland, M.J., Cieza, L.A., Hinkley, S., Dupuy, T.J., |
| 13 | KSA | Bowler, B.P., & Liu, M.C. |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 04393+2221 | KSA 25 | AB | 2010 | 4 | 185 | 27.9 | 10.79 | 12.05 | K5 | N | 043917.95+222131.0 |
| 04393+2221 | KSA 25 | AB | 2016 | 5 | 184 | 28.1 | 10.79 | 12.05 | K5 | N | 043917.95+222131.0 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 04393+2221 KSA 25 AB (HD 284589) : VISUAL OBSERVATIONS REPORTS
WDS 04393+2221 KSA 25 AB (HD 284589) : MEASURES
WDS 04393+2221 (HD 284589) : VIRTUAL EYEPIECE
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WDS 04393+2221 (HD 284589) : ALADIN DSS IMAGE @
Error -22130
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Error -27220
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