20025+5831 HJL 270 (HD 239298)

Coord 2000	20025+5831		Discov num	HJL 270		Comp			Coord arcsec 2000	20 02 32.41 +58 30 40.7
Date first	1903		Date last	2015		Obs	16
Pa first	183		Pa last	182.5		P.A. Now (θ)	182.5°
Sep first	18.0		Sep last	18.151		Sep. Now (ρ)	18.151"
Mag pri	10.07		Mag sec	10.84		delta mag (ΔM)	0.77		Spectral class	F5 (yellow-white)
Pri motion ra	+057		Sec motion ra	+055
Pri motion dec	+013		Sec motion dec	+013
Notes	V (Proper motion indicates physical)

rPM=0.034 (< 0.3, Physical double) This double is physical.

Name	HD 239298		Constellation	Cygnus		SAO	32233		Tycho2	3948-00969-1
Gaia DR2	2234887748601823104		HD	239298		DM	BD+58 2036

No records found.

refcode	metd	author	reference
HJL1981	-	Halbwachs, J.L.	1981A&AS...44...47H
HJL1981		A&AS 44, 47, 1981
HJL1986	Pa -	Halbwachs, J.L.	1986A&AS...66..131H
HJL1986		A&AS 66, 131, 1986
HJL1986		(Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986		only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
HJL2012	orb -	Halbwachs, J.L., Arenou, F., Famaey, B., et al.	.
HJL2012		SF2A-2012: Proc. Annual Meeting of the French Society of Astronomy & Astrophysics
HJL2012		87, ed. S. Boissier et al. (Paris: Soc. Francaise d'Astron. et d'Astrop.)
HJL2012b	not -	Halbwachs, J.L., Mayor, M., & Udry, S.	2012MNRAS.422...14H
HJL2012b		MNRAS 422, 14, 2012
HJL2016	Kv j	Halbwachs, J.L., Boffin, H.M.J., Le Bouquin, J.-B., Kiefer, F., Famaey, B.,	2016MNRAS.455.3303H
HJL2016		Salomon, J.-B., Arenou, F., Pourbaix, D., Anthonioz, F., Grellmann, R., Guieu, S.,
HJL2016		Sana, H., et al.
HJL2016		MNRAS 455, 3303, 2016
HJL2020	Kv+ j	Halbwachs, J.-L., Kiefer, F., Lebreton, Y., Boffin, H.M.J., Arenou, F., LeBouquin,	2020MNRAS.496.1355H
HJL2020	+orb	J.-B., Famaey, B., Dourbaix, D., Guillout, P., Salomon, J.-B. & Mazeh, T.
HJL2020		MNRAS 496, 1355, 2020

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20025+5831	HJL 270		1999	7	183	18.1	10.07	10.84	F5	VD	200232.41+583040.7
20025+5831	HJL 270		2010	8	183	18.2	10.07	10.84	F5	VD	200232.41+583040.7
20025+5831	HJL 270		2015	11	182	18.1	10.07	10.84	F5	V	200232.41+583040.7

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS