21077+3022 UC 256

21^h 07^m 40.74^s +30° 22' 11.7" P.A. 67.00 sep 48.1 mag 8.79,11.10 Sp G0V

Coord 2000	21077+3022	Discov num	UC 256	Comp		Coord arcsec 2000	21 07 40.74 +30 22 11.7
Date first	1894	Date last	2015	Obs	15
Pa first	68	Pa last	67.2	P.A. Now (θ)	67.2°
Sep first	46.7	Sep last	48.068	Sep. Now (ρ)	48.068"
Mag pri	8.79	Mag sec	11.10	delta mag (ΔM)	2.31	Spectral class	G0V (yellow)
Pri motion ra	-006	Sec motion ra	-010
Pri motion dec	-070	Sec motion dec	-064
Notes	V (Proper motion indicates physical)

rPM=0.103 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Constellation

Cygnus

Tycho2

2701-00565-1

Gaia DR2

1852375899638220928

WDS 21077+3022 UC 256 : NOTES

No records found.

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
21077+3022	UC 256		1999	1	67	48.1	8.79	11.10		V	210740.74+302211.7
21077+3022	UC 256		2011	8	67	48.0	8.79	11.10		VD	210740.74+302211.7
21077+3022	UC 256		2015	10	67	48.2	8.79	11.10	G0V	V	210740.74+302211.7

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WDS 21077+3022 UC 256 : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 21077+3022 UC 256 : MEASURES

No records found.

WDS 21077+3022 : VIRTUAL EYEPIECE

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WDS 21077+3022 : ALADIN DSS IMAGE @

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

Error -22130
Not valid ID.

Error -22130
Not valid ID.
Error -27220
Not valid ID.