Take the 2-minute tour ×
Astronomy Stack Exchange is a question and answer site for astronomers and astrophysicists. It's 100% free, no registration required.

We probably all know the Wow!-Signal, happened on August 15, 1977. Assume that it wasn't meant for us. What was it pointing at then?

The signal at that time came from RA= 19h25m31s ± 10s or 19h28m22s ± 10s and the declination becomes −26°57′ ± 20′.

Which stars could it point at and did anybody investigate this?

share|improve this question
1  
You're assuming the signal was aimed in a particular direction rather than being broadcast in all directions. –  Keith Thompson Mar 12 at 1:12

1 Answer 1

up vote 2 down vote accepted

In the opposite direction (RA= 07h 25m 31s ± 10s, +26° 57′ ± 20′, J2000.0, seen from Earth) of the positive horn of the Wow!-signal (RA= 19h 25m 31s ± 10s, −26° 57′ ± 20′, in J2000.0 coordinates), Iota Geminorum, aka Propus, (RA= 07h 25m 43.6s, +27° 47' 53") is within a 3-sigma error ellipse (1.26 sigma in RA, 2.54 sigma in Dec, 2.84 sigma total error).

However, this doesn't reveal, whether the signal pointed to anywhere.

share|improve this answer
    
"120-126 light-years from Earth" sounds worth an investigation. I assume that it's not known whether it has planets. –  draks ... Mar 11 at 14:55
1  
According to this (hpcf.upr.edu/~abel/phl/exomaps/…) map no planets of Propus are known yet. –  Gerald Mar 11 at 15:29
    
@draks...: But we know Sol does have planets. If there was a target (a big assumption), it's more likely to be us than Propus, particularly since we're about 120 light-years closer to ... whatever. –  Keith Thompson Mar 12 at 1:13
    
@KeithThompson You can't assume that signal was directed at us. What reason do you have to believe that the signal was meant for us besides the fact that we are here. I believe that the best assumption is no assumption. We have no information that lets us assume it was for us. –  TheBluegrassMathematician Apr 4 at 21:32
1  
@RyanMcGaha: I'm not assuming anything. I'm disputing the question's implicit assumption that it wasn't directed at us. If it was deliberately sent in one particular direction, the fact that we received it implies that it was directed at us, or at someone or something directly between us and the source, or at someone or something directly behind us along the same path. Of the available candidates (Sol and Propus), Sol seems more likely, because, as I said we know Sol has planets. –  Keith Thompson Apr 4 at 21:37

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.