ups And d
ups And d is a cold gas giant orbiting the F8 V star ups And in the constellation Andromeda. It lies about 44 light-years from Earth and was discovered in 1999 using the radial velocity method.
Is ups And d in the Habitable Zone?
The position of ups And d relative to the habitable zone of ups And cannot be precisely determined from the available orbital data.
Orbit and Year Length
A year on ups And d — one full orbit around ups And — lasts 1,276.5 Earth days, longer than an Earth year. It orbits at an average distance of 2.513 AU. Its orbit is mildly elliptical (eccentricity 0.30).
How Was ups And d Discovered?
ups And d was discovered in 1999 using the radial velocity method, with observations from Multiple Observatories.
The radial velocity method measures the subtle wobble of a star caused by the gravitational pull of an orbiting planet, visible as periodic shifts in the star's light spectrum. The size of the wobble reveals the planet's minimum mass.
How Far Away Is ups And d?
ups And d is 43.7 light-years (13.4 parsecs) from Earth. Light arriving here tonight left the planet around the year 1983. A probe traveling at the speed of Voyager 1 — about 17 km/s, the fastest outbound spacecraft ever launched — would need roughly 769,120 years to make the journey.
Earth Similarity Index
The Earth Similarity Index (ESI) scores how physically similar a planet is to Earth, from 0 to 1, based on radius, density, escape velocity and surface temperature. ups And d scores 0.36, ranking #666 of 5,568 planets with a known ESI. For reference, Mars scores about 0.70.
The Host Star: ups And
ups And d belongs to a system of 2 stars; it orbits ups And.
ups And
- Spectral type
- F8 V
- Mass
- 1.30 M☉
- Radius
- 1.56 R☉
- Age
- 5.0 billion years (Sun: 4.6)
The ups And Planetary System
ups And d is one of 3 known planets in the ups And system. Its siblings:
ups And d — Complete Data
| Mass (best estimate) | 1,313.22 Earth masses |
|---|---|
| Orbital period | 1,276.46 days |
| Orbital distance | 2.513 AU |
| Eccentricity | 0.299 |
| Earth Similarity Index | 0.36 |
| Distance from Earth | 43.7 light-years (13.4 parsecs) |
| Constellation | Andromeda |
| Discovery method | Radial Velocity |
| Discovery facility | Multiple Observatories |
| Discovery year | 1999 |
Data: NASA Exoplanet Archive, last updated 2019-01-28. Earth Similarity Index: PHL @ UPR Arecibo.
Frequently Asked Questions About ups And d
Is ups And d habitable?
ups And d is not known to orbit within the habitable zone of ups And, and as a cold gas giant it is an unlikely candidate for life as we know it.
How far away is ups And d?
ups And d is about 44 light-years from Earth in the constellation Andromeda. A spacecraft traveling as fast as Voyager 1 (about 17 km/s) would need roughly 769,120 years to get there.
How long is a year on ups And d?
One orbit around ups And takes 1,276.5 Earth days.
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