(90377) Sedna |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 5 Jul 2025 | 20.8 | 82.992 AU | 83.737 AU | 04h07m | +08°57' | 42.7° | 0.5° |
Opposition | 23 Nov 2025 | 20.7 | 82.893 AU | 81.927 AU | 04h06m | +08°40' | 168.0° | 0.1° |
(90377) Sedna - 2025-07-05
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
2025-07-05 00:00 UT 04 07 20.9 +08 57 37 83.737 82.992 42.7 0.5 246 20.8
2025-07-05 23:26 UT 04 07 23.4 +08 57 39 83.726 82.991 43.6 0.5 246 20.8
2025-07-06 00:00 UT 04 07 23.4 +08 57 39 83.725 82.991 43.6 0.5 246 20.8
2025-07-07 00:00 UT 04 07 25.9 +08 57 41 83.713 82.991 44.5 0.5 247 20.8
2025-07-08 00:00 UT 04 07 28.4 +08 57 42 83.701 82.990 45.4 0.5 247 20.8
2025-07-09 00:00 UT 04 07 30.8 +08 57 43 83.689 82.989 46.3 0.5 248 20.8
2025-07-10 00:00 UT 04 07 33.3 +08 57 44 83.676 82.989 47.2 0.5 248 20.8
2025-07-11 00:00 UT 04 07 35.6 +08 57 45 83.664 82.988 48.1 0.5 248 20.8
2025-07-12 00:00 UT 04 07 38.0 +08 57 45 83.651 82.987 49.0 0.5 249 20.8
2025-07-13 00:00 UT 04 07 40.3 +08 57 46 83.638 82.987 49.9 0.5 249 20.8
2025-07-14 00:00 UT 04 07 42.6 +08 57 46 83.624 82.986 50.8 0.5 249 20.8
2025-07-15 00:00 UT 04 07 44.8 +08 57 46 83.611 82.985 51.7 0.6 250 20.8
2025-07-16 00:00 UT 04 07 47.0 +08 57 46 83.597 82.984 52.7 0.6 250 20.8
2025-07-17 00:00 UT 04 07 49.2 +08 57 45 83.584 82.984 53.6 0.6 250 20.8
2025-07-18 00:00 UT 04 07 51.4 +08 57 45 83.570 82.983 54.5 0.6 250 20.8
2025-07-19 00:00 UT 04 07 53.5 +08 57 44 83.556 82.982 55.4 0.6 251 20.8
2025-07-20 00:00 UT 04 07 55.5 +08 57 43 83.541 82.982 56.3 0.6 251 20.8
2025-07-21 00:00 UT 04 07 57.6 +08 57 42 83.527 82.981 57.2 0.6 251 20.8
2025-07-22 00:00 UT 04 07 59.6 +08 57 40 83.512 82.980 58.2 0.6 252 20.8
2025-07-23 00:00 UT 04 08 01.5 +08 57 39 83.497 82.980 59.1 0.6 252 20.8
2025-07-24 00:00 UT 04 08 03.5 +08 57 37 83.482 82.979 60.0 0.6 252 20.8
2025-07-25 00:00 UT 04 08 05.3 +08 57 35 83.467 82.978 60.9 0.6 252 20.8
2025-07-26 00:00 UT 04 08 07.2 +08 57 33 83.452 82.977 61.8 0.6 253 20.8
2025-07-27 00:00 UT 04 08 09.0 +08 57 30 83.437 82.977 62.8 0.6 253 20.8
2025-07-28 00:00 UT 04 08 10.7 +08 57 28 83.421 82.976 63.7 0.6 253 20.8
2025-07-29 00:00 UT 04 08 12.5 +08 57 25 83.406 82.975 64.6 0.6 253 20.8
2025-07-30 00:00 UT 04 08 14.2 +08 57 22 83.390 82.975 65.5 0.6 254 20.8
2025-07-31 00:00 UT 04 08 15.8 +08 57 19 83.374 82.974 66.5 0.6 254 20.8
2025-08-01 00:00 UT 04 08 17.4 +08 57 16 83.358 82.973 67.4 0.6 254 20.8
2025-08-02 00:00 UT 04 08 18.9 +08 57 13 83.342 82.972 68.3 0.7 254 20.8
2025-08-03 00:00 UT 04 08 20.5 +08 57 09 83.326 82.972 69.2 0.7 254 20.8
2025-08-04 00:00 UT 04 08 21.9 +08 57 05 83.310 82.971 70.2 0.7 255 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.