# Thread: TYC 1220-91-1 and GAIA

1. ## TYC 1220-91-1 and GAIA

With the GAIA release coming up, I wonder if radial velocity will be included for this star.
This would give evidence if the signal was a Benford beacon at Pi*H frequency.
The observed frequency was 4463.9 MHz. http://files.abovetopsecret.com/file...ez5312e2e1.png

2. Established Member
Join Date
Apr 2008
Posts
454
The radial velocity of TYC 1220-91-1 is apparently not known to a high accuracy, as the linked file merely refers to the radio emission being within the 'expected doppler shift tolerance' of the Pi times neutral hydrogen frequency. TYC 1220-91-1 would need to be approaching the Sun at about 0.035% the speed of light to accomplish the proposed frequency shift, it appears, or about 10.49 kilometers per second, assuming I have the math correct.
Last edited by Ross 54; 2018-Apr-12 at 04:41 PM.

3. Thinking this over, if this is a Benford Beacon it obviously is not one targeted to, say, all stars within 1,000 LYs, as I would assume each burst would have a compensation for the radial velocity. They are just painting the sky.
If I were doing this, I would apply a correction, however, to the frequency as it is headed to each direction, to compensate for the orbital motion of the planet that is broadcasting.

4. Only hours left to go.
Could someone who knows how get the radial velocity out of the DR tomorrow?

5. Thanks to the fact that they got Gaia DR2 loaded into Vizier for a quick coordinate search:

coords 02 08 29.2271 +22 26 58.398
parallax 3.21 milliarcsec (error 0.07)
RV +31.5 km/s err 2.1

6. Well, this tells me two things.
The frequency was probably just a coincidence and
they go the distance in the report wrong by a factor of 10.

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•