21069+6940 LAF 63 AD

Coord 2000	21069+6940		Discov num	LAF  63		Comp	AD		Coord arcsec 2000	21 06 56.20 +69 40 27.9
Date first	2005		Date last	2005		Obs	1
Pa first	332		Pa last	331.5		P.A. Now (θ)	331.5°
Sep first	14.5		Sep last	14.53		Sep. Now (ρ)	14.53"
Mag pri	6.40		Mag sec	20.20		delta mag (ΔM)	13.8		Spectral class	K0 (yellow-orange)
Pri motion ra	+109		Sec motion ra
Pri motion dec	+066		Sec motion dec
Notes	K (K-band or other infrared magnitudes)

Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes Nature of this double is uncertain.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show			21 06 56 +69 40 28	LAF 63 AB	2005	1	201	3.7	6.40	18.90	12.50
Show			21 06 56 +69 40 28	LAF 63 AC	2005	1	259	8.4	6.40	19.30	12.90
Show			21 06 56 +69 40 28	LAF 63 AD	2005	1	332	14.5	6.40	20.20	13.80		<===

Quadruple system
4 estimated visually detectable stars in this system

Constellation

Cepheus

Gaia DR2

2270771375724754816

No records found.

refcode	metd	author	reference
Laf2007	A j	Lafreniere, D., Doyon, R., Marois, C., Nadeau, D., Oppenheimer, B.R., Roche, P.F.,	2007ApJ...670.1367L
Laf2007	+C	Rigaut, F., Graham, J.R., et al.
Laf2007		ApJ 670, 1367, 2007
Laf2008	A j	Lafreniere, D., Jayawardhana, R., Brandeker, A., Ahmic, M., & van Kerkwijk, M.H.	2008ApJ...683..844L
Laf2008	+Hp	ApJ 683, 844, 2008
Laf2008b	A j	Lafreniere, D., Jayawardhana, R., & van Kerkwijk, M.H.	2008ApJ...689L.153L
Laf2008b		ApJ 689, L153, 2008
Laf2009	Hn u	Lafreniere, D., Marois, C., Doyon, R., & Barman, T.	2009ApJ...694L.148L
Laf2009		ApJ 694, L148, 2009
Laf2010	A u	Lafreniere, D., Jayawardhana, R., & van Kerkwijk, M.H.	2010ApJ...719..497L
Laf2010		ApJ 719, 497, 2010
Laf2011	A u	Lafreniere, D., Jayawardhana, R., Janson, M., Helling, C., Witte, S., &	2011ApJ...730...42L
Laf2011		Hauschildt, P.
Laf2011		ApJ 730, 42, 2011
Laf2011		(photometry of both components based on 2MASS PSC plus their contrast measures)
Laf2014	A j	Lafreniere, D., Jayawardhana, R., van Kerkwijk, M.H., Brandeker, A., & Janson, M.	2014ApJ...785...47L
Laf2014	+Al	ApJ 785, 47, 2014

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21069+6940	LAF 63	AD	2005	1	332	14.5	8.20	22.00	K0	D	210656.21+694028.0

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No records found.


No records found.

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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