(90377) Sedna |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 31 Aug 2025 | 20.8 | 82.952 AU | 82.850 AU | 04h08m | +08°54' | 95.5° | 0.7° |
Opposition | 23 Nov 2025 | 20.7 | 82.893 AU | 81.927 AU | 04h06m | +08°40' | 168.0° | 0.1° |
(90377) Sedna - 2025-08-31
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 Sedna are:
e (Eccentricity) : 0.8618240
a (Semimajor axis) : 551.9180231
i (Inclination) : 11.92676
Ω (Longitude of ascending node) : 144.44087
ω (Argument of perihelion) : 310.93869
M (Mean anomaly) : 358.60498
Epoch : 2025 May 05
L (Longitude of perihelion) : 95.99940
B (Latitude of perihelion) : -8.98142
P (Orbital period in years) : 12966.17
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
2025-08-31 00:00 UT 04 08 44.6 +08 54 20 82.850 82.952 95.5 0.7 260 20.8
2025-08-31 20:50 UT 04 08 44.7 +08 54 13 82.835 82.952 96.3 0.7 260 20.8
2025-09-01 00:00 UT 04 08 44.8 +08 54 12 82.833 82.951 96.4 0.7 260 20.8
2025-09-02 00:00 UT 04 08 44.9 +08 54 04 82.815 82.951 97.4 0.7 261 20.8
2025-09-03 00:00 UT 04 08 45.0 +08 53 56 82.798 82.950 98.3 0.7 261 20.8
2025-09-04 00:00 UT 04 08 45.0 +08 53 47 82.781 82.949 99.3 0.7 261 20.8
2025-09-05 00:00 UT 04 08 45.0 +08 53 39 82.764 82.949 100.2 0.7 261 20.8
2025-09-06 00:00 UT 04 08 44.9 +08 53 30 82.747 82.948 101.2 0.7 261 20.8
2025-09-07 00:00 UT 04 08 44.8 +08 53 21 82.730 82.947 102.1 0.7 262 20.8
2025-09-08 00:00 UT 04 08 44.7 +08 53 12 82.713 82.947 103.1 0.7 262 20.8
2025-09-09 00:00 UT 04 08 44.5 +08 53 03 82.696 82.946 104.0 0.7 262 20.8
2025-09-10 00:00 UT 04 08 44.2 +08 52 54 82.680 82.945 105.0 0.7 262 20.8
2025-09-11 00:00 UT 04 08 43.9 +08 52 45 82.663 82.944 105.9 0.7 263 20.8
2025-09-12 00:00 UT 04 08 43.6 +08 52 35 82.646 82.944 106.9 0.7 263 20.8
2025-09-13 00:00 UT 04 08 43.2 +08 52 26 82.630 82.943 107.8 0.7 263 20.8
2025-09-14 00:00 UT 04 08 42.8 +08 52 16 82.613 82.942 108.8 0.7 263 20.8
2025-09-15 00:00 UT 04 08 42.3 +08 52 07 82.597 82.942 109.7 0.7 263 20.8
2025-09-16 00:00 UT 04 08 41.8 +08 51 57 82.581 82.941 110.7 0.6 264 20.8
2025-09-17 00:00 UT 04 08 41.2 +08 51 47 82.565 82.940 111.6 0.6 264 20.8
2025-09-18 00:00 UT 04 08 40.6 +08 51 38 82.549 82.940 112.6 0.6 264 20.8
2025-09-19 00:00 UT 04 08 39.9 +08 51 28 82.533 82.939 113.5 0.6 264 20.8
2025-09-20 00:00 UT 04 08 39.2 +08 51 18 82.517 82.938 114.5 0.6 265 20.8
2025-09-21 00:00 UT 04 08 38.4 +08 51 08 82.501 82.937 115.5 0.6 265 20.8
2025-09-22 00:00 UT 04 08 37.6 +08 50 57 82.486 82.937 116.4 0.6 265 20.8
2025-09-23 00:00 UT 04 08 36.8 +08 50 47 82.470 82.936 117.4 0.6 265 20.8
2025-09-24 00:00 UT 04 08 35.9 +08 50 37 82.455 82.935 118.3 0.6 266 20.8
2025-09-25 00:00 UT 04 08 35.0 +08 50 27 82.440 82.935 119.3 0.6 266 20.8
2025-09-26 00:00 UT 04 08 34.0 +08 50 16 82.425 82.934 120.2 0.6 266 20.8
2025-09-27 00:00 UT 04 08 33.0 +08 50 06 82.410 82.933 121.2 0.6 266 20.8
2025-09-28 00:00 UT 04 08 31.9 +08 49 56 82.395 82.932 122.1 0.6 267 20.8
2025-09-29 00:00 UT 04 08 30.8 +08 49 45 82.381 82.932 123.1 0.6 267 20.8
2025-09-30 00:00 UT 04 08 29.7 +08 49 35 82.366 82.931 124.1 0.6 267 20.8
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.