(136199) Eris |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 19 Jul 2025 | 18.7 | 95.566 AU | 95.545 AU | 01h49m | -00°07' | 90.9° | 0.6° |
Opposition | 17 Oct 2025 | 18.6 | 95.544 AU | 94.564 AU | 01h47m | -00°22' | 169.3° | 0.1° |
(136199) Eris - 2025-07-19
astro.vanbuitenen.nl
The interactive orbit chart above shows the body's path through the solar system and its position at the given date.
Green and blue lines are shown perpendicular to the ecliptic plane: Green if the path is above the ecliptic plane, blue if it is below.
(Left-click and drag to rotate the view; Right-click and drag to move the view; Use scroll wheel to zoom in our out.)
The orbital elements of Eris are:
e (Eccentricity) : 0.4356757
a (Semimajor axis) : 68.0516301
i (Inclination) : 43.82172
Ω (Longitude of ascending node) : 36.04599
ω (Argument of perihelion) : 150.70976
M (Mean anomaly) : 211.04229
Epoch : 2025 May 05
L (Longitude of perihelion) : 14.01162
B (Latitude of perihelion) : 19.80096
P (Orbital period in years) : 561.38
The light curve chart below shows the estimated development of the minor planet's magnitude.
The all-sky chart below shows the path of the minor planet over the same period as the light curve. The current position is marked yellow.
The following chart shows the path of the minor planet in the next few days. The field of view is optimized for (~10x50) binoculars and finderscopes.
A more printer-friendly version of the same chart can be found below.
Ephemerides:
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2025-07-19 00:00 UT 01 49 30.4 +00 07 02 95.545 95.566 90.9 0.6 249 18.7
2025-07-19 01:35 UT 01 49 30.4 +00 07 02 95.544 95.565 90.9 0.6 249 18.7
2025-07-20 00:00 UT 01 49 30.6 +00 07 06 95.528 95.565 91.8 0.6 249 18.7
2025-07-21 00:00 UT 01 49 30.7 +00 07 10 95.511 95.565 92.7 0.6 249 18.7
2025-07-22 00:00 UT 01 49 30.9 +00 07 14 95.494 95.565 93.7 0.6 250 18.7
2025-07-23 00:00 UT 01 49 30.9 +00 07 19 95.478 95.565 94.6 0.6 250 18.7
2025-07-24 00:00 UT 01 49 31.0 +00 07 24 95.461 95.564 95.6 0.6 250 18.7
2025-07-25 00:00 UT 01 49 30.9 +00 07 29 95.444 95.564 96.5 0.6 250 18.7
2025-07-26 00:00 UT 01 49 30.9 +00 07 35 95.427 95.564 97.4 0.6 250 18.7
2025-07-27 00:00 UT 01 49 30.8 +00 07 40 95.411 95.564 98.4 0.6 251 18.7
2025-07-28 00:00 UT 01 49 30.7 +00 07 46 95.394 95.563 99.3 0.6 251 18.7
2025-07-29 00:00 UT 01 49 30.5 +00 07 52 95.377 95.563 100.3 0.6 251 18.7
2025-07-30 00:00 UT 01 49 30.3 +00 07 58 95.361 95.563 101.2 0.6 251 18.7
2025-07-31 00:00 UT 01 49 30.1 +00 08 04 95.344 95.563 102.1 0.6 251 18.7
2025-08-01 00:00 UT 01 49 29.8 +00 08 11 95.328 95.562 103.1 0.6 251 18.7
2025-08-02 00:00 UT 01 49 29.5 +00 08 18 95.311 95.562 104.0 0.6 252 18.7
2025-08-03 00:00 UT 01 49 29.1 +00 08 25 95.295 95.562 105.0 0.6 252 18.7
2025-08-04 00:00 UT 01 49 28.7 +00 08 32 95.279 95.562 105.9 0.6 252 18.7
2025-08-05 00:00 UT 01 49 28.3 +00 08 39 95.263 95.561 106.8 0.6 252 18.7
2025-08-06 00:00 UT 01 49 27.8 +00 08 47 95.247 95.561 107.8 0.6 252 18.7
2025-08-07 00:00 UT 01 49 27.3 +00 08 55 95.231 95.561 108.7 0.6 253 18.7
2025-08-08 00:00 UT 01 49 26.8 +00 09 02 95.215 95.561 109.7 0.6 253 18.7
2025-08-09 00:00 UT 01 49 26.2 +00 09 11 95.199 95.560 110.6 0.6 253 18.7
2025-08-10 00:00 UT 01 49 25.6 +00 09 19 95.183 95.560 111.6 0.6 253 18.7
2025-08-11 00:00 UT 01 49 24.9 +00 09 27 95.168 95.560 112.5 0.6 253 18.7
2025-08-12 00:00 UT 01 49 24.2 +00 09 36 95.152 95.560 113.4 0.6 254 18.7
2025-08-13 00:00 UT 01 49 23.5 +00 09 44 95.137 95.559 114.4 0.6 254 18.6
2025-08-14 00:00 UT 01 49 22.7 +00 09 53 95.122 95.559 115.3 0.5 254 18.6
2025-08-15 00:00 UT 01 49 21.9 +00 10 02 95.107 95.559 116.3 0.5 254 18.6
2025-08-16 00:00 UT 01 49 21.1 +00 10 12 95.092 95.559 117.2 0.5 254 18.6
2025-08-17 00:00 UT 01 49 20.2 +00 10 21 95.077 95.559 118.2 0.5 255 18.6
2025-08-18 00:00 UT 01 49 19.3 +00 10 30 95.062 95.558 119.1 0.5 255 18.6
Terminology:
delta: distance between minor planet and earth in AU
radius: distance between minor planet and sun in AU
magn: magnitude (brightness) estimate
ra: right ascension in hours (24h = 360deg)
dec: declination in degrees
elong: elongation in degrees (angle sun-earth-minor planet)
phase: phase angle in degrees (angle sun-minor planet-earth)
AU: Astronomical Unit (mean distance between earth and sun: 149597870.7 km
Orbital elements provided by the MPC (Minor Planet Center).
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.