HR 8799 d

Summary

HR 8799 d is an exoplanet^[1]. It draws 24 Wikipedia views per month (exoplanet category, ranking #77 of 578).^[2]

Key Facts

• HR 8799 d's image is recorded as Exoplanet Comparison HR 8799 d.png^[3].
• HR 8799 d's instance of is recorded as exoplanet^[4].
• HR 8799 d's constellation is recorded as Pegasus^[5].
• HR 8799 d's Commons category is recorded as HR 8799 d^[6].
• HR 8799 d's parent astronomical body is recorded as Q584300^[7].
• HR 8799 d's catalog code is recorded as HD 218396d^[8].
• HR 8799 d's catalog code is recorded as HR 8799d^[9].
• HR 8799 d's catalog code is recorded as TIC 245368902d^[10].
• HR 8799 d's time of discovery or invention is recorded as +2008-11-13T00:00:00Z^[11].
• HR 8799 d's time of discovery or invention is recorded as +2008-11-00T00:00:00Z^[12].
• HR 8799 d's Freebase ID is recorded as /m/04vwdh6^[13].
• HR 8799 d's discovery method is recorded as direct imaging^[14].
• HR 8799 d's orbital eccentricity is recorded as {'amount': '+0.6'}^[15].
• HR 8799 d's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+45'}^[16].
• HR 8799 d's mass is recorded as {'unit': 'Q651336', 'amount': '+8.3'}^[17].
• HR 8799 d's radius is recorded as {'unit': 'Q3421309', 'amount': '+0.9'}^[18].
• HR 8799 d's orbital period is recorded as {'unit': 'Q573', 'amount': '+41627.54'}^[19].
• HR 8799 d's angular distance is recorded as {'unit': 'Q829073', 'amount': '+0.685279'}^[20].
• HR 8799 d's parallax is recorded as {'unit': 'Q21500224', 'amount': '+24.2175'}^[21].
• HR 8799 d's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+26.97'}^[22].
• HR 8799 d's argument of periapsis is recorded as {'unit': 'Q28390', 'amount': '+80.2'}^[23].
• HR 8799 d's SIMBAD ID is recorded as HD 218396d^[24].
• HR 8799 d's Wolfram Language entity code is recorded as Entity["Exoplanet", "HR8799d"]^[25].
• HR 8799 d's Extrasolar Planets Encyclopaedia exoplanet ID is recorded as hr_8799_d--518^[26].
• HR 8799 d's NASA Exoplanet Archive ID is recorded as HR 8799 d^[27].

Body

Designation and Status

HR 8799 d's instance of is recorded as exoplanet^[4].

History and Context

Catalog codes include HD 218396d^[8], HR 8799d^[9], and TIC 245368902d^[10].

Why It Matters

HR 8799 d draws 24 Wikipedia views per month (exoplanet category, ranking #77 of 578).^[2] It has Wikipedia articles in 13 language editions, a strong signal of global cultural recognition.^[28] It is known by 4 alternative names across languages and contexts.^[29]