21500-6319 RST 9009 (HD 207240)

Coord 2000	21500-6319		Discov num	RST9009		Comp			Coord arcsec 2000	21 49 59.52 -63 18 47.3
Date first	1929		Date last	2015		Obs	5
Pa first	346		Pa last	343.4		P.A. Now (θ)	343.4°
Sep first	6.0		Sep last	6.105		Sep. Now (ρ)	6.105"
Mag pri	9.48		Mag sec	12.00		delta mag (ΔM)	2.52		Spectral class	A1m: (white)
Pri motion ra	+033		Sec motion ra	-015
Pri motion dec	-035		Sec motion dec	+152
Notes	N (See Notes)

rPM=1.264 This double is not physical.

Name	HD 207240		Constellation	Indus		SAO	255081		Tycho2	9119-00332-1
Gaia DR2	6402853853791989120		HD	207240

discov_num	notes	refcode
RST9009	Previously known as RST1110a.

refcode	metd	author	reference
Rst1933	T -	Rossiter, R.A.	1933MmRAS..65...27R
Rst1933		MemRAS 65, 27, 1933
Rst1937	Ma -	Rossiter, R.A.	1937MmRAS..65...51R
Rst1937		MemRAS 65, 51, 1937
Rst1943	Ma -	Rossiter, R.A.	1943POMic...8..133R
Rst1943		Pub. Univ. Michigan Obs. 8, 133, 1943
Rst1944	-	Rossiter, R.A.	1944POMic...9....1R
Rst1944		Pub. Univ. Michigan Obs. 9, 1, 1944
Rst1947	Ma -	Rossiter, R.A.	1947POMic...9....7R
Rst1947		Pub. Univ. Michigan Obs. 9, 7, 1947
Rst1955	Ma j	Rossiter, R.A.	1955POMic..11....1R
Rst1955	+P+	Pub. Univ. Michigan Obs. 11, 1, 1955
Rst1964	Ma -	Rossiter, R.A.	1964POMic...9...73R
Rst1964		Pub. Univ. Michigan Obs. 9, 73, 1964

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21500-6319	RST9009		2000	2	343	6.1	9.48	12.00	A1m:	N D	214959.52-631847.3
21500-6319	RST9009		2015	5	343	6.1	9.48	12.00	A1m:	N	214959.52-631847.3

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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