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HR 8799 b

Host star HR 8799 • 9.86 R⊕ • 170000 d orbit

Records

4

archive rows

Discovery

—

Imaging

Radius

9.86 R⊕

median non-null value

Mass

2000 M⊕

median non-null value

HR 8799

1200 K equilibrium

Quick Summary

Fast scan of the current planet profile

This first pass still reads from the currently available detail payload. Canonical adopted summaries will replace first-row values in the next backend pass.

Host Star

HR 8799

Discovery

Imaging

Year

2008

Period

—

Radius

6.73 Rearth

Mass

—

Eq. Temp

1200 K

Scale Comparison

Radius against familiar reference worlds

Current adopted radius: 9.86 R⊕ • circles scaled linearly by radius

Earth

1.0 R⊕ baseline

HR 8799 b

9.86 R⊕

Jupiter

11.2 R⊕ reference

Provenance

Underlying measurements and references

Evidence Summary

Rows

4

Refs

4

Methods

1

Discoverystable

4 values • 1 distinct

Facilitystable

4 values • 1 distinct

Perioddisputed

3 values • 3 distinct

Radiusdisputed

2 values • 2 distinct

Massstable

1 values • 1 distinct

Eq. Tempstable

1 values • 1 distinct

YearMethodFacilityTelescopePeriodRadiusMassEq. TempReference
2008ImagingGemini Observatory8.19 m Gemini North Telescope—6.73 Rearth—1200 KBonnefoy et al. 2016
2008ImagingGemini Observatory8.19 m Gemini North Telescope170000 day13 Rearth2000 Mearth—Marois et al. 2008
2008ImagingGemini Observatory8.19 m Gemini North Telescope1.72e5 day———Konopacky et al. 2016
2008ImagingGemini Observatory8.19 m Gemini North Telescope1.67e5 day———Zurlo et al. 2016