Triple-Triples......

[chiltonstar]

A good few double-doubles about, including the famous & lovely one in Lyra, but what about triple-triples?

Any nominations please (three triples in the same eg 1 degree FoV)??

Chris

[Demonperformer]

That is quite a challenge! Look forward to seeing what people come up with. 

[Knighty2112]

Good one. I’ll have to ransack my sources and see what comes up.

[Stu]

How about Sigma Orionis for a double triple (I know one is a quad but..... )? Struggling for triple triple!

[chiltonstar]

I thought I'd make it easy by not suggesting a quad-quad.......

Chris

[furrysocks2]

I scraped coordinates from Wikipedia's triple and multiple star system category pages and coded a quick search to pair up any star systems at close proximity..., perhaps not the ideal data set though.

• https://en.wikipedia.org/wiki/Category:Triple_star_systems
• https://en.wikipedia.org/wiki/Category:Multiple_star_systems

 

Max dist 1 deg
	Merope_(star), Alcyone_(star), 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 

Max dist 1.5 deg
	Merope_(star), Alcyone_(star), 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	Rho_Geminorum, Castor_(star), 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 
	3_Centauri, 4_Centauri, 

Max dist 2 deg
	Merope_(star), Alcyone_(star), 
	Theta_Tauri, GG_Tauri, 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	27_Canis_Majoris, Tau_Canis_Majoris, 
	Rho_Geminorum, Castor_(star), 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 
	3_Centauri, 4_Centauri, 
	Beta_Scorpii, Nu_Scorpii, 

 

[chiltonstar]

19 hours ago, furrysocks2 said:

I scraped coordinates from Wikipedia's triple and multiple star system category pages and coded a quick search to pair up any star systems at close proximity..., perhaps not the ideal data set though.

• https://en.wikipedia.org/wiki/Category:Triple_star_systems
• https://en.wikipedia.org/wiki/Category:Multiple_star_systems

 

Max dist 1 deg
	Merope_(star), Alcyone_(star), 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 

Max dist 1.5 deg
	Merope_(star), Alcyone_(star), 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	Rho_Geminorum, Castor_(star), 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 
	3_Centauri, 4_Centauri, 

Max dist 2 deg
	Merope_(star), Alcyone_(star), 
	Theta_Tauri, GG_Tauri, 
	Theta1_Orionis_A, Theta1_Orionis_B, Theta2_Orionis, Iota_Orionis, V380_Orionis, 
	Sigma_Orionis, Alnitak, 
	27_Canis_Majoris, Tau_Canis_Majoris, 
	Rho_Geminorum, Castor_(star), 
	HD_93129, QZ_Carinae, 
	Zeta_Ursae_Majoris, Alcor_(star), 
	3_Centauri, 4_Centauri, 
	Beta_Scorpii, Nu_Scorpii, 

 

Comparing this list with CDSA, it's difficult to find a grouping with three visible triplets close together, but I suppose if there is one, it would be in an area with a lot of stars like Taurus or Cygnus....

Chris

[furrysocks2]

4 minutes ago, chiltonstar said:

Comparing this list with CDSA, it's difficult to find a grouping with three visible triplets close together, but I suppose if there is one, it would be in an area with a lot of stars like Taurus or Cygnus....

Chris

I tried the following data set last night - http://www.ctio.noao.edu/~atokovin/stars/

Taking only the A components for each star system, here are WDS ids and V-band magnitude for a few <1degree candidates. Unfortunately, I have no idea how many of them are "visual" whether due to mag or separation, and some will have >3 components, And even then some are not visible from here.

 

Cygnus might be your best bet, but the dataset is a bit skewed - perhaps there's been a more detailed survey around Cygnus?