21502+1545 UC 4577
21h 50m 09.57s +15° 45' 01.9" P.A. 221.00 sep 37.5 mag 8.70,15.80 Sp F2 dist. 84.67 pc (276.19 l.y.)
| Coord 2000 | 21502+1545 | Discov num | UC 4577 | Comp | Coord arcsec 2000 | 21 50 09.57 +15 45 01.9 | |||||
| Date first | 1997 | Date last | 2012 | Obs | 4 | ||||||
| Pa first | 222 | Pa last | 221.2 | P.A. Now (θ) | 221.2° | ||||||
| Sep first | 38.5 | Sep last | 37.479 | Sep. Now (ρ) | 37.479" | ||||||
| Mag pri | 8.70 | Mag sec | 15.80 | delta mag (ΔM) | 7.1 | Spectral class | F2 (yellow-white) | ||||
| Pri motion ra | -057 | Sec motion ra | -061 | ||||||||
| Pri motion dec | -057 | Sec motion dec | -055 | ||||||||
| Notes | V (Proper motion indicates physical) | ||||||||||
OTHER CATALOGS AND DESIGNATIONS
| Constellation | Pegasus | SAO | 107426 | HIP | 107790 | Tycho2 | 1666-00023-1 | ||||
| Gaia DR2 | 1772355367507922176 | HD | 207664 | BD | BD+15 4508 | Distance | 84.67 | ||||
| Distance ly | 276.19 |
WDS 21502+1545 UC 4577 : NOTES
REFERENCES
| refcode | metd | author | reference |
| UC | USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4) | ................... | |
| UC_2013a | Eu j | Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G., | 2013AJ....145...44Z |
| UC_2013a | & Zacharias, M.I. (UCAC4 Catalog) | ||
| UC_2013a | AJ 145, 44, 2013 | ||
| UC_2013b | Eu j | Hartkopf, W.I., Mason, B.D., Finch, C.T., Zacharias, N., Wycoff, G.L., & Hsu, D. | 2013AJ....146...76H |
| UC_2013b | AJ 146, 76, 2013 (UC 301 - 5058) | ||
| UC_2013b | (Relative astrometry is derived from individual measurements, not precessed means. | ||
| UC_2013b | UCAC aperture magnitudes are listed, unless the duplicity flag indicates a blended | ||
| UC_2013b | image (a flag value of 30 or higher). Model fit magnitudes are given for both | ||
| UC_2013b | components if either has such a flag. Model fit magnitudes are indicated by the | ||
| UC_2013b | letter "f" following the filter information. | ||
| UC_2013b | APASS photometry extracted from UCAC4 catalog is listed under reference AAV2012. | ||
| UC_2013b | Due to aperture method used, APASS photometry is only included for pairs wider | ||
| UC_2013b | than 10" (Henden, private comm.) Photometry for pairs wider than 10" which showed | ||
| UC_2013b | identical values for both components in all filters were removed, as well. | ||
| UC_2015 | Eu - | Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C., | 2015AJ....150..101Z |
| UC_2015 | DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C., | ||
| UC_2015 | Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G. | ||
| UC_2015 | AJ 150, 101, 2015 | ||
| UC_9999 | Eu - | temporary UCAC files | ................... |
WDS HISTORIC DATA
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 21502+1545 | UC 4577 | 2000 | 2 | 221 | 38.4 | 8.70 | 15.80 | V | 215009.57+154501.9 | ||
| 21502+1545 | UC 4577 | 2001 | 2 | 221 | 38.3 | 8.70 | 15.80 | V | 215009.57+154501.9 | ||
| 21502+1545 | UC 4577 | 2010 | 3 | 221 | 37.5 | 8.70 | 15.80 | F2 | V | 215009.57+154501.9 | |
| 21502+1545 | UC 4577 | 2012 | 4 | 221 | 37.5 | 8.70 | 15.80 | F2 | V | 215009.57+154501.9 |
If you need more information about this double, apply for a data request form to the WDS.
WDS 21502+1545 UC 4577 : VISUAL OBSERVATIONS REPORTS
WDS 21502+1545 UC 4577 : MEASURES
WDS 21502+1545 : VIRTUAL EYEPIECE
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WDS 21502+1545 : ALADIN DSS IMAGE @
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