Exoplanet Table of Firsts/Extremes

Thought this would be good to have it in the forum.

Other places, including Wikipedia has it, but not complete.
So here is the list.

Please correct any information that is wrong.
Or any honorable mentions that should be displayed.

Table of extremes, coming up soon.

Pretty neat!

First disproven planet could be the planet's at Barnard's star. Not sure.
First planet discovered by astrometry goes to the planet in the HD 176051 system (it's binary, not sure which star it orbits).
By Doppler spectroscopy goes to 51 Peg b.
HD 189733 b is the first planet detected by polarised light, but of course not discovered that way, which seems to be what your criteria is.
You have 51 Peg b marked as the first planet from radial velocity. Pulsar timing is a type of radial velocity, so, that would go to the PSR B1257+12 system.
By timing goes to PSR B1620-26 c.
Eclipsing binary minima timing, I think is HW Vir's planets.
First Neptune-type planet would go to Gliese 436 b.
Eccentric Neptune would be Gliese 436 b.
Hot Neptune would be Gliese 436 b.
Not sure how you define "Jupiter-type," but if you define it as a Jupiter analogue and accept RV minimum masses, HD 154345 b could fit that description.
About being in a binary system, wasn't 16 Cyg Bb reported before 55 Cnc Ab? I don't recall.
First three-planet system was υ And.
First four-planet system was 55 Cnc.
First five-planet system was 55 Cnc.
First six-planet system was HD 10180 (or Kepler-11, depending on how you view HD 10180's unconfirmed planets).

Thanks, update when I have a chance.

have to use a notepad, cause edit destroys the format. lol

First disproven planet could be the planet's at Barnard's star. Not sure.
First planet discovered by astrometry goes to the planet in the HD 176051 system (it's binary, not sure which star it orbits).
By Doppler spectroscopy goes to 51 Peg b.
HD 189733 b is the first planet detected by polarised light, but of course not discovered that way, which seems to be what your criteria is.
You have 51 Peg b marked as the first planet from radial velocity. Pulsar timing is a type of radial velocity, so, that would go to the PSR B1257+12 system.
By timing goes to PSR B1620-26 c.
Eclipsing binary minima timing, I think is HW Vir's planets.
First Neptune-type planet would go to Gliese 436 b.
Eccentric Neptune would be Gliese 436 b.
Hot Neptune would be Gliese 436 b.
Not sure how you define "Jupiter-type," but if you define it as a Jupiter analogue and accept RV minimum masses, HD 154345 b could fit that description.
About being in a binary system, wasn't 16 Cyg Bb reported before 55 Cnc Ab? I don't recall.
First three-planet system was υ And.
First four-planet system was 55 Cnc.
First five-planet system was 55 Cnc.
First six-planet system was HD 10180 (or Kepler-11, depending on how you view HD 10180's unconfirmed planets).


Earth/Neptune/Jupiter-like is somewhat in the same orbit as they are.
Hence I have a Hot, Cold, (blank), and Eccentric.
Yeah, need to put a clarification on that.

where is PSR B1257+12 A planet? this is the small confirm exoplanet found so far, the planet it's about 2 times the mass of the moon

What about HD 114762? It was discovered in 1989 by David Latham and his team, three years before the PSR B1257+12 system was announced. At the time it was considered to be a small brown dwarf (Msin i = 11.68 Jupiter masses) but today would be considered a large superjovian, with 16 other objects in the EPE with Msin i greater than 11.68 Mj, but smaller than 15 Mj.

The fact that this discovery has been consistently overlooked, and the credit for the first discovery of an extrasolar planet goes to Aleksander Wolszczan for the PSR B1257+12 system in 1990 (or to the Mayor/Queloz team for 51 Peg in 1995 if you consider only planetary systems around main-sequence stars) is a major disservice to the Latham team and to history.

(Although the PSR B1257+12 system was the first extrasolar system recognized at the time to be planetary in nature.)

Daniel wrote:

where is PSR B1257+12 A planet? this is the small confirm exoplanet found so far, the planet it's about 2 times the mass of the moon

It's because PSR B1257+12 A was discovered after B & C. This was due to no naming convension.
Hence it is why the name has a capital letter, too. (now, naming convension stated all exoplanets to start as letter "b", be lower case, and the letters given to them in the order of discovery).

Mongo wrote:

What about HD 114762? ...

That's because:
Gamma Cephei b = was suspected to have a planet (1988).
HD 114762 = first discovered exoplanet (1989).
but, PSR B1257+12 B/C = first confirmed exoplanet (1992).

marasama wrote:

Mongo wrote:

What about HD 114762? ...

That's because:
Gamma Cephei b = was suspected to have a planet (1988).
HD 114762 = first discovered exoplanet (1989).
but, PSR B1257+12 B/C = first confirmed exoplanet (1992).

I don't follow. HD 114762 b is the first known extrasolar object that is currently considered a planet. It was considered a brown dwarf when discovered (which explains the lack of general attention the discovery received at the time), but it is now considered to be a planet, not because its physical parameters have changed, but because the definition of a planet has evolved over time, and now includes it. In my opinion it should be listed as the first actually existing extrasolar planet to be discovered.

Mongo wrote:

I don't follow. HD 114762 b is the first known extrasolar object that is currently considered a planet. It was considered a brown dwarf when discovered (which explains the lack of general attention the discovery received at the time), but it is now considered to be a planet, not because its physical parameters have changed, but because the definition of a planet has evolved over time, and now includes it. In my opinion it should be listed as the first actually existing extrasolar planet to be discovered.

It's symantics.

So, HD 114762 b was first discovered, but not verified.
PSR B1257 B/C was discovered second, but confirmed before HD 114762 b.

In other words. I could say I discovered a planet right now. But until it's verified, my claim is not taken.
Same with HD 114762 b, it was discovered, but until the team can prove it, it don't count.
PSR B1257 B/C was proven before HD 114762 b.

Because, anyone can make claims to be first.
But the one that is verified is the one that counts.

But it was verified in 1991 by a different group:

Constraints on the companion object to HD 114762

So it was discovered and announced by one group, and verified by another group before any other extrasolar planet was discovered.

With HD 114762b it wasn't generally regarded as a firm detection of a planet at the time: they were much more cautious regarding the implications of the mass/inclination degeneracy.