للنجم DMPP-1، وهو نجم من النوع F8 V، 4 كواكب مؤكدة.
مَقيس
المسافة
نحو 204 سنة ضوئية
النوع الطيفي للنجم
F8 V
الكواكب المؤكدة
4
البعد عن الشمس
نبذة 204 سنة ضوئية. لعبوره:
الضوء204 سنة
سرعة فوياجر 13.62 مليون سنة
السير بسرعة 100 كم/ساعة2.2 مليار سنة
فوياجر 1 بالسرعة التي ابتعد بها خلال السنة حتى 2026-10-25 (JPL Horizons). القيادة: دون توقف، ودون التزود بالوقود أبدًا.
كيف اكتُشف
اكتُشف أول كوكب عام 2019 بطريقة السرعة الشعاعية (أرشيف ناسا للكواكب الخارجية).
كواكبه
DMPP-1 e — 1.9 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 6 days; about 1,000 °C, hot enough to melt rock; found in 2019 by radial velocity.
DMPP-1 c — 3.3 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 10 days; about 970 °C, hotter than boiling water; found in 2019 by radial velocity.
DMPP-1 b — 4.3 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 18 days; about 600 °C, hotter than boiling water; found in 2019 by radial velocity.
DMPP-1 d — 2 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 3 days; about 1,400 °C, hot enough to melt rock; found in 2019 by radial velocity.
NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.