22575+2046 RBR 21 (51 Peg)

Coord 2000	22575+2046		Discov num	RBR  21		Comp			Coord arcsec 2000	22 57 27.98 +20 46 07.8
Date first	2001		Date last	2001		Obs	2
Pa first	155		Pa last	244.9		P.A. Now (θ)	244.9°
Sep first	2.9		Sep last	2.87		Sep. Now (ρ)	2.87"
Mag pri	6.80		Mag sec	16.80		delta mag (ΔM)	10		Spectral class	G2.5IVa (yellow)
Pri motion ra	+207		Sec motion ra
Pri motion dec	+060		Sec motion dec
Notes	N R (See Notes, Red magnitudes)

Nature of this double is uncertain.

Name	51 Peg		Common name	Helvetios		Var name	NSV14374 Peg		Constellation	Pegasus
SAO	90896		HIP	113357		Tycho2	1717-02193-1		Gaia DR2	2835207319109249920
HD	217014		HR	8729		GC	32003		GL	Gl 882
BD	BD+19 5036		Flamsteed	51 Pegasi		Flamsteed name	51 Peg		Distance	15.61
Distance ly	50.92

Meaning

Latin for 'the Helvetian' and refers to the Celtic tribe that lived in Switzerland during antiquity

discov_num	notes	refcode
RBR 21	51 Peg = Helvetios.
	2001.7340: PA is measured in zenith mode. If data collected in
	equatorial mode, PA = 244.9. Confirmation of the pair should establish
	the correct theta value.	Rbr2011d
	Based on van Leeuwen (2007) parallax, the candidate companion	VlF2007
	would have a separation of 45 au. Due to its relatively high proper
	motion, as additional observation will be able to determine whether
	the star shares common proper motion or is a background star.	Rbr2011d
	CHARA Array Limb-darkened diameter 0.748 +/- 0.027 mas,	CIA2008c
	R = 1.266 +/- 0.046 \rsun.
	CHARA Array Limb-darkened diameter of A :	CIA2013c
	R = 1.1501 +/- 0.0195 \rsun, L = 1.2962 +/-0.0156 \lsun,
	Teff = 5750 +/- 46 K, M = 1.064 \msun, Age = 5.6 Gyr.

refcode	metd	author	reference
CIA2008c	not j	Baines, E.K., McAlister, H.A., ten Brummelaar, T.A., Turner, N.H., Sturmann, J.,	2008ApJ...680..728B
CIA2008c		Sturmann, L., Goldfinger, P.J. & Ridgway, S.T.	.
CIA2008c		ApJ 680, 728, 2008	.
CIA2013c	not j	Boyajian, T.S., von Braun, K., van Belle, G., Farrington, C., Schaefer, G., Jones,	2013ApJ...771...40B
CIA2013c		J., White, R., McAlister, H.A., ten Brummelaar, T.A., Ridgway, S., Gies, D.R.,	.
CIA2013c		Sturmann, L., Sturmann, J., Turner, N.H., Goldfinger, P.J. & Vargas, N.	.
CIA2013c		ApJ 771, 40, 2013	.
Rbr2011d	A j	Roberts, L.C., Jr., Turner, N.H., ten Brummelaar, T.A., Mason, B.D., &	2011AJ....142..175R
Rbr2011d		AJ 142, 175, 2011
VlF2007	-	van Leeuwen, F.	2007A&A...474..653V
VlF2007		A&A 474, 653, 2007

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
22575+2046	RBR 21		2001	1	155	2.9	5.50		G2.5IVa	D	225727.98+204607.8

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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

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