How far is Pluto away from Eris?

Answer 1

Both Pluto and Eris (a "dwarf planet" even further from the Sun than Pluto) are constantly moving in their own orbits. Sometimes they may be on opposite sides of the solar system, and at other times they won't be too far apart (as planets go).

Answer 2

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{| |+ Eris |- | Eris (centre) and Dysnomia (left of centre).

Hubble Space Telescope.

! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Discovery

! style="LINE-HEIGHT: 1.1em" | Discovered by | M. E. Brown,

C. A. Trujillo,

D. L. Rabinowitz[1] ! style="LINE-HEIGHT: 1.1em" | Discovery date | 2005 January 5[2] ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Designations

! style="LINE-HEIGHT: 1.1em" | MPC designation | 136199 Eris ! style="LINE-HEIGHT: 1.1em" | Pronunciation | /ˈɪərɨs/, or [ˈɛrɨs] as in Greek Έρις [a] ! style="LINE-HEIGHT: 1.1em" | Alternate name | 2003 UB313[3] ! style="LINE-HEIGHT: 1.1em" | Minor planet

category | dwarf planet,

TNO,

plutoid,

and SDO[4][5] ! style="LINE-HEIGHT: 1.1em" | Adjective | Eridian ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Orbital characteristics[6]

| Epoch March 6, 2006

(JD 2453800.5)[7] ! style="LINE-HEIGHT: 1.1em" | Aphelion | 97.56 AU

14.60 × 109 km ! style="LINE-HEIGHT: 1.1em" | Perihelion | 37.77 AU

5.65 × 109 km ! style="LINE-HEIGHT: 1.1em" | Semi-major axis | 67.67 AU

10.12 × 109 km ! style="LINE-HEIGHT: 1.1em" | Eccentricity | 0.441 77 ! style="LINE-HEIGHT: 1.1em" | Orbital period | 203,600 days

557 years ! style="LINE-HEIGHT: 1.1em" | Average orbital speed | 3.436 km/s ! style="LINE-HEIGHT: 1.1em" | Mean anomaly | 197.634 27° ! style="LINE-HEIGHT: 1.1em" | Inclination | 44.187° ! style="LINE-HEIGHT: 1.1em" | Longitude of ascending node | 35.869 6° ! style="LINE-HEIGHT: 1.1em" | Argument of perihelion | 151.430 5° ! style="LINE-HEIGHT: 1.1em" | Satellites | 1 ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Physical characteristics

! style="LINE-HEIGHT: 1.1em" | Mean radius | 1300+200−100 km[8] ! style="LINE-HEIGHT: 1.1em" | Mass | (1.67±0.02) × 1022 kg[9] ! style="LINE-HEIGHT: 1.1em" | Equatorial surface gravity | ~0.8 m/s² ! style="LINE-HEIGHT: 1.1em" | Sidereal rotation

period | > 8 h? ! style="LINE-HEIGHT: 1.1em" | Albedo | 0.86 ± 0.07 ! style="LINE-HEIGHT: 1.1em" | Surface temp.

(approx) ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 31%; PADDING-RIGHT: 0.25em" | min ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 38%; PADDING-RIGHT: 0.25em" | mean ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 31%; PADDING-RIGHT: 0.25em" | max | 30 K 42.5 K 55 K ! style="LINE-HEIGHT: 1.1em" | Apparent magnitude | 18.7[10] ! style="LINE-HEIGHT: 1.1em" | Absolute magnitude (H) | −1.12 ± 0.01[6] ! style="LINE-HEIGHT: 1.1em" | Angular diameter | 40 milli-arcsec[11] Eris, formal designation 136199 Eris, is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly. It is approximately 2,500 kilometres in diameter and 27% more massive than Pluto.[9][12] Eris was first spotted in January 2005 by a Palomar Observatory-based team led by Mike Brown, and its identity verified later that year. It is a trans-Neptunian object (TNO) native to a region of space beyond the Kuiper belt known as the scattered disc. Eris has one moon, Dysnomia; recent observations have found no evidence of further satellites. The current distance from the Sun is 96.7 AU,[10] roughly three times that of Pluto. With the exception of some comets the pair are the most distant known natural objects in the Solar System.[2] Because Eris is larger than Pluto, its discoverers and NASA called it the Solar System's tenth planet. This, along with the prospect of other similarly sized objects being discovered in the future, motivated the International Astronomical Union (IAU) to define the term planet for the first time. Under a then-new IAU definition approved on August 24, 2006, Eris is a "dwarf planet" along with Pluto, Ceres, Haumea and Makemake.[13] = Eris (dwarf planet) =

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|+ Eris Eris (centre) and Dysnomia (left of centre).

Hubble Space Telescope.

! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Discovery

! style="LINE-HEIGHT: 1.1em" | Discovered by | M. E. Brown,

C. A. Trujillo,

D. L. Rabinowitz[1] ! style="LINE-HEIGHT: 1.1em" | Discovery date | 2005 January 5[2] ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Designations

! style="LINE-HEIGHT: 1.1em" | MPC designation | 136199 Eris ! style="LINE-HEIGHT: 1.1em" | Pronunciation | /ˈɪərɨs/, or [ˈɛrɨs] as in Greek Έρις [a] ! style="LINE-HEIGHT: 1.1em" | Alternate name | 2003 UB313[3] ! style="LINE-HEIGHT: 1.1em" | Minor planet

category | dwarf planet,

TNO,

plutoid,

and SDO[4][5] ! style="LINE-HEIGHT: 1.1em" | Adjective | Eridian ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Orbital characteristics[6]

| Epoch March 6, 2006

(JD 2453800.5)[7] ! style="LINE-HEIGHT: 1.1em" | Aphelion | 97.56 AU

14.60 × 109 km ! style="LINE-HEIGHT: 1.1em" | Perihelion | 37.77 AU

5.65 × 109 km ! style="LINE-HEIGHT: 1.1em" | Semi-major axis | 67.67 AU

10.12 × 109 km ! style="LINE-HEIGHT: 1.1em" | Eccentricity | 0.441 77 ! style="LINE-HEIGHT: 1.1em" | Orbital period | 203,600 days

557 years ! style="LINE-HEIGHT: 1.1em" | Average orbital speed | 3.436 km/s ! style="LINE-HEIGHT: 1.1em" | Mean anomaly | 197.634 27° ! style="LINE-HEIGHT: 1.1em" | Inclination | 44.187° ! style="LINE-HEIGHT: 1.1em" | Longitude of ascending node | 35.869 6° ! style="LINE-HEIGHT: 1.1em" | Argument of perihelion | 151.430 5° ! style="LINE-HEIGHT: 1.1em" | Satellites | 1 ! style="TEXT-ALIGN: center; PADDING-TOP: 0.75em" colspan="2" | Physical characteristics

! style="LINE-HEIGHT: 1.1em" | Mean radius | 1300+200−100 km[8] ! style="LINE-HEIGHT: 1.1em" | Mass | (1.67±0.02) × 1022 kg[9] ! style="LINE-HEIGHT: 1.1em" | Equatorial surface gravity | ~0.8 m/s² ! style="LINE-HEIGHT: 1.1em" | Sidereal rotation

period | > 8 h? ! style="LINE-HEIGHT: 1.1em" | Albedo | 0.86 ± 0.07 ! style="LINE-HEIGHT: 1.1em" | Surface temp.

(approx) ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 31%; PADDING-RIGHT: 0.25em" | min ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 38%; PADDING-RIGHT: 0.25em" | mean ! style="TEXT-ALIGN: left; LINE-HEIGHT: 1.1em; WIDTH: 31%; PADDING-RIGHT: 0.25em" | max | 30 K 42.5 K 55 K ! style="LINE-HEIGHT: 1.1em" | Apparent magnitude | 18.7[10] ! style="LINE-HEIGHT: 1.1em" | Absolute magnitude (H) | −1.12 ± 0.01[6] ! style="LINE-HEIGHT: 1.1em" | Angular diameter | 40 milli-arcsec[11] Eris, formal designation 136199 Eris, is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly. It is approximately 2,500 kilometres in diameter and 27% more massive than Pluto.[9][12] Eris was first spotted in January 2005 by a Palomar Observatory-based team led by Mike Brown, and its identity verified later that year. It is a trans-Neptunian object (TNO) native to a region of space beyond the Kuiper belt known as the scattered disc. Eris has one moon, Dysnomia; recent observations have found no evidence of further satellites. The current distance from the Sun is 96.7 AU,[10] roughly three times that of Pluto. With the exception of some comets the pair are the most distant known natural objects in the Solar System.[2] Because Eris is larger than Pluto, its discoverers and NASA called it the Solar System's tenth planet. This, along with the prospect of other similarly sized objects being discovered in the future, motivated the International Astronomical Union (IAU) to define the term planet for the first time. Under a then-new IAU definition approved on August 24, 2006, Eris is a "dwarf planet" along with Pluto, Ceres, Haumea and Makemake.[13] |}

Answer 3

Eris has a very eccentric orbit. At the moment, it is approximately 96.6 AU from the sun (its aphelion is 97.5 AU), but about the year 2257 it will be at its perihelion of 37.9 AU, which will be closer to the sun than Pluto. Neptune's average distance from the sun is 30.1 AU.

Therefore, depending upon where each planet is in its respective orbit, the distance could be anywhere from about 1 billion kilometers to over 19 billion km.

Answer 4

Eris is about 28.5 AUs from Pluto

Answer 5

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