20001+1636 J  1204AB

Coord 2000	20001+1636		Discov num	J  1204		Comp	AB		Coord arcsec 2000	19 59 56.11 +16 36 18.0
Date first	1915		Date last	2015		Obs	5
Pa first	235		Pa last	235		P.A. Now (θ)	235°
Sep first	41.1		Sep last	40.2		Sep. Now (ρ)	40.2"
Mag pri	10.93		Mag sec	12.67		delta mag (ΔM)	1.74		Spectral class
Pri motion ra	+003		Sec motion ra	+017
Pri motion dec	+001		Sec motion dec	-004
Notes	U (Proper motion indicates non-physical)

Visually invisible, K-band or other infrared star rPM=0.851 This double is not physical.

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name

SAO

coord_2000

discov#

comp

first

last

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sep

mag1

mag2

d_mag

orb

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20001+1636

J 1204

AB

1915

2015

5

235

40.2

10.93

12.67

1.74

<===

Show

20001+1636

J 1204

BC

1915

2015

3

267

2.0

12.70

13.70

1.00

Triple system
3 visible stars in this system

Precise pa	234.8		Precise sep	40.15		Constellation	Sagitta		Tycho2	1616-01367-1
Gaia DR2	37606630400

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20001+1636	J 1204	AB	1915	1	235	41.1	9.30	12.00			200060.00+163600.0
20001+1636	J 1204	AB	1997	2	235	40.2	10.93	12.70		D	195956.11+163618.0
20001+1636	J 1204	AB	2006	3	235	40.2	10.93	12.70		D	195956.11+163618.0
20001+1636	J 1204	AB	2015	5	235	40.2	10.93	12.67		U	195956.11+163618.0

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