(50000) Quaoar |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 22 Oct 2025 | 18.9 | 42.633 AU | 42.950 AU | 18h37m | -15°12' | 70.8° | 1.3° |
Opposition | 3 Jul 2026 | 18.7 | 42.610 AU | 41.604 AU | 18h46m | -14°48' | 171.8° | 0.2° |
(50000) Quaoar - 2025-10-22
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 Quaoar are:
e (Eccentricity) : 0.0358352
a (Semimajor axis) : 43.1476667
i (Inclination) : 7.99137
Ω (Longitude of ascending node) : 188.96329
ω (Argument of perihelion) : 163.92241
M (Mean anomaly) : 291.48220
Epoch : 2025 Nov 21
L (Longitude of perihelion) : 173.03387
B (Latitude of perihelion) : 2.20650
P (Orbital period in years) : 283.42
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.
Ephemerides:
Date Time RA (2000) DEC (2000) delta radius elong phase PA magn
2025-10-22 00:00 UT 18 37 26.5 -15 12 50 42.950 42.633 70.8 1.3 83 18.9
2025-10-22 05:12 UT 18 37 27.2 -15 12 52 42.953 42.633 70.6 1.3 83 18.9
2025-10-23 00:00 UT 18 37 29.5 -15 12 58 42.966 42.633 69.8 1.3 83 18.9
2025-10-24 00:00 UT 18 37 32.5 -15 13 05 42.981 42.633 68.9 1.2 83 18.9
2025-10-25 00:00 UT 18 37 35.7 -15 13 13 42.997 42.633 67.9 1.2 83 18.9
2025-10-26 00:00 UT 18 37 38.9 -15 13 21 43.012 42.633 66.9 1.2 83 18.9
2025-10-27 00:00 UT 18 37 42.2 -15 13 28 43.028 42.633 66.0 1.2 83 18.9
2025-10-28 00:00 UT 18 37 45.6 -15 13 35 43.043 42.632 65.0 1.2 83 18.9
2025-10-29 00:00 UT 18 37 49.1 -15 13 42 43.058 42.632 64.0 1.2 82 18.9
2025-10-30 00:00 UT 18 37 52.7 -15 13 48 43.073 42.632 63.0 1.2 82 18.9
2025-10-31 00:00 UT 18 37 56.3 -15 13 55 43.088 42.632 62.1 1.2 82 18.9
2025-11-01 00:00 UT 18 38 00.1 -15 14 01 43.103 42.632 61.1 1.2 82 18.9
2025-11-02 00:00 UT 18 38 03.9 -15 14 07 43.118 42.632 60.1 1.2 82 18.9
2025-11-03 00:00 UT 18 38 07.8 -15 14 13 43.132 42.632 59.1 1.1 81 18.9
2025-11-04 00:00 UT 18 38 11.8 -15 14 19 43.147 42.632 58.2 1.1 81 18.9
2025-11-05 00:00 UT 18 38 15.9 -15 14 25 43.161 42.632 57.2 1.1 81 18.9
2025-11-06 00:00 UT 18 38 20.0 -15 14 30 43.175 42.632 56.2 1.1 81 18.9
2025-11-07 00:00 UT 18 38 24.2 -15 14 35 43.189 42.632 55.3 1.1 81 18.9
2025-11-08 00:00 UT 18 38 28.5 -15 14 40 43.202 42.631 54.3 1.1 80 18.9
2025-11-09 00:00 UT 18 38 32.9 -15 14 45 43.216 42.631 53.3 1.1 80 18.9
2025-11-10 00:00 UT 18 38 37.4 -15 14 50 43.229 42.631 52.3 1.1 80 18.9
2025-11-11 00:00 UT 18 38 41.9 -15 14 54 43.242 42.631 51.4 1.0 80 18.9
2025-11-12 00:00 UT 18 38 46.5 -15 14 58 43.255 42.631 50.4 1.0 80 18.9
2025-11-13 00:00 UT 18 38 51.2 -15 15 02 43.268 42.631 49.4 1.0 79 18.9
2025-11-14 00:00 UT 18 38 55.9 -15 15 06 43.281 42.631 48.5 1.0 79 18.9
2025-11-15 00:00 UT 18 39 00.8 -15 15 10 43.293 42.631 47.5 1.0 79 18.9
2025-11-16 00:00 UT 18 39 05.7 -15 15 13 43.305 42.631 46.5 1.0 79 18.9
2025-11-17 00:00 UT 18 39 10.6 -15 15 16 43.317 42.631 45.5 0.9 78 18.9
2025-11-18 00:00 UT 18 39 15.6 -15 15 19 43.329 42.631 44.6 0.9 78 18.9
2025-11-19 00:00 UT 18 39 20.7 -15 15 22 43.341 42.631 43.6 0.9 78 18.9
2025-11-20 00:00 UT 18 39 25.9 -15 15 24 43.352 42.630 42.6 0.9 77 18.9
2025-11-21 00:00 UT 18 39 31.1 -15 15 26 43.363 42.630 41.7 0.9 77 18.9
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.