Exoplanet Discoveries and Updates

[The Astronomer]

Yesterday an interesting paper dropped on ArXiv. It contains a boatload of companions, both stellar (and brown dwarf) and planetary. It contains huge walls of data, so I’ll grab a summary of new planets provided by a user on another Forums here:



I don’t know about the HD stars, but you might be able to recognize that 20 Leonis Minoris is Halcyon, and Lambda Serpentis is Orinoco’s system. Omicron2 Eridani A is Keid, by the way.

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20 Leonis Minoris b
Semi-major axis: 0.2003 AU
Orbital period: 31.15 days
Eccentricity: 0.2
Mass: 10 Earths
Irradiance: ~35 Earths

Lambda Serpentis b
Semi-major axis: 0.123611 AU
Orbital period: 15.508 days
Eccentricity: 0.2
Mass: 14 Earths
Irradiance: ~140 Earths