07241-2918 SMY 2 (Aludra)

Coord 2000	07241-2918		Discov num	SMY   2		Comp			Coord arcsec 2000	07 24 05.70 -29 18 11.2
Date first	1833		Date last	2020		Obs	16
Pa first	285		Pa last	286.7		P.A. Now (θ)	286.7°
Sep first	169.0		Sep last	177.004		Sep. Now (ρ)	177.004"
Mag pri	2.45		Mag sec	6.77		delta mag (ΔM)	4.32		Spectral class	B5Ia (blue-white)
Pri motion ra	-005		Sec motion ra	-006
Pri motion dec	+006		Sec motion dec	-001
Notes	N (See Notes)

rPM=0.905 This double is not physical.

Common name	Aludra		Constellation	Canis Major		SAO	173651		HIP	35904
Tycho2	6550-04525-1		Gaia DR2	5605797190260657152		HD	58350		HR	2827
GC	9881		CD	CD-29 4328		CP	CP-29 1680		Bayer	Eta Canis Majoris
Bayer name	Eta CMa		Flamsteed	31 Canis Majoris		Flamsteed name	31 CMa		FK5	283
Distance	609.76		Distance ly	1989.04		Bayer greek	η CMa

Meaning

virginity

discov_num	notes	refcode
SMY 2	eta CMa = 31 CMa = Aludra. B is CD-29@4321.

refcode	metd	author	reference
Smy1833A	-	Smyth, W.H.	1833MmRAS...5...13H
Smy1833A		cited by Herschel (MemRAS 5, 13, 1833)
Smy1844	Ma -	Smyth, W.H.	1844QB43.S66.......
Smy1844		Cycle of Celestial Objects 2, 1844
Smy1845	Ma -	Smyth, W.H.	1845MNRAS...6..229S
Smy1845		MNRAS 6, 229, 1845
Smy1852A	Ma -	Smyth, W.H.	.
Smy1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
Smy1857	Ma j	Smyth, W.H.	1857MNRAS..17..262S
Smy1857		MNRAS 17, 262, 1857
Smy1858	Ma j	Smyth, W.H.	1858MNRAS..18..316S
Smy1858		MNRAS 18, 316, 1858
Smy1860	Ma -	Smyth, W.H.	.
Smy1860	+orb	Speculum Hartwellianum, 1860
Smy1860B	-	Smyth, W.H.	1860MmRAS..28...13J
Smy1860B		cited by Jacob (MemRAS 28, 13, 1860)
Smy1874A	-	Smyth, W.H.	1874MNRAS..35...28B
Smy1874A		cited by Burnham (MNRAS 35, 28, 1874)
Smy1875A	Ma -	Smyth, W.H.	1875AN.....85..323D
Smy1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
Smy1876A	Ma -	Smyth, W.H.	1876AReg...14..165W
Smy1876A		cited by Ward (Wrd1876 = Astr. Reg. 14, 165, 1876)
Smy1878A	-	Smyth, W.H.	1878Obs.....2..269G
Smy1878A		cited by Gledhill (Obs 2, 269, 1878)
Smy1880A	-	Smyth, W.H.	1880Obs.....3..508G
Smy1880A		cited by Gledhill (Obs 3, 508, 1880)
Smy1880B	Ma -	Smyth, W.H.	1880MNRAS..40..497B
Smy1880B		cited by Burnham (MNRAS 40, 497, 1880)
Smy1906A	Ma -	Smyth, W.H.	1906MmRAS..56....1L
Smy1906A		cited by Lewis (MemRAS 56, 1, 1906)
Smy1937A	Ma -	Smyth, W.H.	1937AnLei..18....1S
Smy1937A		cited by Strand (Ann. Sterrew. Leiden 18, 1937)

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
07241-2918	SMY 2		1999	13	286	179.0	2.45	6.77	B5Ia	N D	072405.70-291811.2
07241-2918	SMY 2		2010	15	286	178.0	2.45	6.77	B5Ia	N	072405.70-291811.2
07241-2918	SMY 2		2020	16	287	177.0	2.45	6.77	B5Ia	N	072405.70-291811.2

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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

FoV: 30" 1' 5' 15' 30' 1° 2° 4° 5° 8° Limit: 2 3 4 5 10 15 20 25 30 50 100 Primaries only
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Show name coord_2000 discov# comp pa sep dist(') Show Aludra 07241-2918 SMY 2 287 177.0 1 Show 07227-2927 HJ 2381 AB 224 11.0 21 Show 07227-2927 HJ 2381 AC 111 14.8 21 Show 07266-2907 TDS4801 255 2.4 35 Show 07248-3000 TDS4780 Aa,Ab 152 0.5 43 Show 07248-3000 B 2626 AB 349 6.7 43 Show 07207-2930 TDS4721 87 0.5 47 Show 07214-2846 B 1058 266 3.7 48 Show 07218-2841 B 1059 88 1.3 48 Show 07269-2949 B 1543 156 1.8 49 Show 07224-2834 TDS4746 108 2.4 50 Show 07203-2920 B 1537 194 0.6 50 Show 07262-3001 RST1348 247 3.4 51 Show 07252-2827 BRT2898 13 3.7 54 Show 07284-2905 B 1062 230 1.6 58 Show 07286-2917 TDS4843 55 1.5 59 Show 07265-3012 RST1349 95 0.7 63 Show 07257-3017 TDS4791 59 1.8 63 Show 07211-2828 TDS4726 141 2.5 65 Show 07289-2857 TDS4848 56 2.2 67 Show 07253-2811 HDS1042 226 11.3 69 Show 07278-3007 B 1545 270 0.9 69 Show 07272-2820 TDS4817 36 0.7 72 Show 07186-2918 HDS1014 254 0.2 72 Show 07253-3028 I 1061 51 1.1 72 Show 07263-2810 SEE 79 305 0.7 75 Show 07278-2822 B 1061 274 1.7 75 Show 07214-3025 B 1538 358 1.1 76 Show 07284-2826 KPP2271 169 19.1 77 Show 07295-2845 B 1063 330 1.8 79 Show 07182-2943 B 1534 136 2.1 81 Show 07303-2923 TDS4871 180 0.6 82 Show 07184-2957 RST 243 282 1.0 83 Show 07289-3015 HDS1054 AB 151 0.3 84 Show 07289-3015 SKF1945 AB,C 182 64.0 84 Show 07300-2953 TDS4866 163 2.6 84 Show 07273-2803 TDS4819 156 0.6 86 Show 07176-2901 FAL 21 161 8.3 87 Show 07188-2824 HJ 2375 171 9.9 89 Show 07180-2839 B 1056 74 2.6 89 Show 07302-2837 B 1064 319 0.1 90 Show 07249-2747 RST1347 245 2.1 92 Show 07181-2830 BRT2891 144 4.2 93 Show 07174-2844 B 2139 318 6.3 95 Show 07270-3046 B 1544 AB 205 6.3 96 Show 07270-3046 B 1544 AC 149 145.1 96 Show 07171-2848 TVB 160 243 11.5 97 Show 07270-3046 B 1544 CD 316 3.0 99 Show 07253-2738 B 723 37 1.6 102 Show 07302-2816 HJ 2393 118 15.7 102 Show 07240-3102 FMP 6 186 7.0 104

	A
B	pa=289.0° sep=156.36"

Componente originario normalizzato	AB		Common name	Aludra		Meaning	virginity		Coord arcsec 2000	072405.70-291811.2
Mag	2.45		Spectral class	B5Ia (blue-white)		PmRA	-5.00		PmDE	6.0
SAO	173651		HIP	35904		Tycho2	6550-04525-1		HD	58350
HR	2827		GC	9886		CD	CD-29 4328		CP	CP-29 1680
Bayer	Eta Canis Majoris		Bayer name	Eta CMa		Flamsteed	31 Canis Majoris		Flamsteed name	31 CMa
FK5	283

SAO	173651		DelFlag			RA1950			PmRA1950	-0.0006
DE1950			PmDE1950	0.002		Vmag	2.4		SpType	B5p
Double code			Source	74		CatNum	283		DM	CD-29 4328
DMcomp			BDsup			HD	58350		M HD	0
GC	9886		RA1950rad	1.92909583		DE1950rad	-0.5097139		PmRA2000	-0.0002
PmDE2000	0.004

Catalog	H		HIP	35904		Proxy			RAhms	07 24 05.71
DEdms	-29 18 11.2		Vmag	2.45		VarFlag	2		R Vmag	G
RAdeg	111.024		DEdeg	-29.3031		AstroRef			Plx	1.02
CCDM	07240-2918		N CCDM	I		Nsys	1		Ncomp	1
MultFlag			Source			Qual			M HIP
Theta			Rho			HD	58350		BD
CD	CD-29 4328		CP	CP-29 1680		Dm number	-29 4328		VIred	0.01
SpType	B5Ia		R SpType			Coord arcsec 2000	072405.71-291811.2

HIP	35904		Sn	7		So	0		Nc	1
RArad	1.9377303527		DErad	-0.5114359187		Plx	1.64		PmRA	-4.14
PmDE	5.81		E RArad	0.24		E DErad	0.35		E Plx	0.4
E pmRA	0.29		E pmDE	0.42		Hpmag	2.4215		E Hpmag	0.0021
SHp	0.03		VA	2		BV	-0.083		E BV	0.01
VI	0.01

Componente originario normalizzato	AB		Coord arcsec 2000	072354.40-291720.3		Mag	6.77		PmRA	-6.00
PmDE	-1.0		SAO	173640		Tycho2	6550-04524-1		HD	58324
GC	9881		DM	CD-29 4321		Calc delta mag	4.32		Calc coord	yes

Tycho2	6550-04524-1		Pflag			RAmdeg	110.96884484		DEmdeg	-29.28971557
PmRA	-5.8		PmDE	-1.3		E RAmdeg	4		E DEmdeg	4
E pmRA	1.0		E pmDE	1.0		EpRAm	1991.05		EpDEm	1991.35
Num	13		Q RAmdeg	1.0		Q DEmdeg	1.2		Q pmRA	1.1
Q pmDE	1.2		BTmag	6.763		E BTmag	0.015		VTmag	6.771
E VTmag	0.010		Prox	999		TYC	T		HIP
CCDM			RAdeg	110.96886028		DEdeg	-29.28971250		EpRA 1990	1.42
EpDE 1990	1.73		E RAdeg	3.8		E DEdeg	3.5		Posflg
Corr	-0.2

SAO	173640		DelFlag			RA1950			PmRA1950	-0.0026
DE1950			PmDE1950	-0.001		Vmag	6.9		SpType	A0
Double code			Source	70		CatNum	9881		DM	CD-29 4321
DMcomp			BDsup			HD	58324		M HD	0
GC	9881		RA1950rad	1.92813295		DE1950rad	-0.50948204		PmRA2000	-0.0023
PmDE2000	0.001