(50000) Quaoar |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Opposition | 1 Jul 2025 | 18.7 | 42.643 AU | 41.637 AU | 18h40m | -14°53' | 171.8° | 0.2° |
Today | 8 Aug 2025 | 18.8 | 42.640 AU | 41.824 AU | 18h38m | -14°59' | 143.2° | 0.8° |
(50000) Quaoar - 2025-08-08
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) : 0.0366422
a (Semimajor axis) : 43.1628743
i (Inclination) : 7.99125
Ω (Longitude of ascending node) : 189.00522
ω (Argument of perihelion) : 163.78626
M (Mean anomaly) : 290.96617
Epoch : 2025 May 05
L (Longitude of perihelion) : 172.94077
B (Latitude of perihelion) : 2.22466
P (Orbital period in years) : 283.57
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
2025-08-08 00:00 UT 18 38 10.9 -14 59 05 41.824 42.640 143.2 0.8 97 18.8
2025-08-08 08:15 UT 18 38 09.7 -14 59 08 41.827 42.640 142.8 0.8 97 18.8
2025-08-09 00:00 UT 18 38 07.3 -14 59 15 41.834 42.640 142.2 0.8 97 18.8
2025-08-10 00:00 UT 18 38 03.7 -14 59 26 41.844 42.640 141.3 0.9 96 18.8
2025-08-11 00:00 UT 18 38 00.1 -14 59 37 41.855 42.639 140.3 0.9 96 18.8
2025-08-12 00:00 UT 18 37 56.7 -14 59 48 41.865 42.639 139.4 0.9 96 18.8
2025-08-13 00:00 UT 18 37 53.3 -14 59 59 41.876 42.639 138.4 0.9 95 18.8
2025-08-14 00:00 UT 18 37 49.9 -15 00 10 41.887 42.639 137.5 0.9 95 18.8
2025-08-15 00:00 UT 18 37 46.6 -15 00 22 41.899 42.639 136.5 0.9 95 18.8
2025-08-16 00:00 UT 18 37 43.4 -15 00 33 41.910 42.639 135.6 1.0 95 18.8
2025-08-17 00:00 UT 18 37 40.3 -15 00 44 41.922 42.639 134.6 1.0 94 18.8
2025-08-18 00:00 UT 18 37 37.2 -15 00 56 41.934 42.639 133.6 1.0 94 18.8
2025-08-19 00:00 UT 18 37 34.2 -15 01 07 41.946 42.639 132.7 1.0 94 18.8
2025-08-20 00:00 UT 18 37 31.3 -15 01 19 41.958 42.639 131.7 1.0 94 18.8
2025-08-21 00:00 UT 18 37 28.4 -15 01 30 41.971 42.639 130.8 1.0 93 18.8
2025-08-22 00:00 UT 18 37 25.7 -15 01 42 41.984 42.638 129.8 1.0 93 18.8
2025-08-23 00:00 UT 18 37 23.0 -15 01 54 41.997 42.638 128.9 1.1 93 18.8
2025-08-24 00:00 UT 18 37 20.3 -15 02 05 42.010 42.638 127.9 1.1 93 18.8
2025-08-25 00:00 UT 18 37 17.8 -15 02 17 42.023 42.638 126.9 1.1 92 18.8
2025-08-26 00:00 UT 18 37 15.4 -15 02 29 42.036 42.638 126.0 1.1 92 18.8
2025-08-27 00:00 UT 18 37 13.0 -15 02 41 42.050 42.638 125.0 1.1 92 18.8
2025-08-28 00:00 UT 18 37 10.7 -15 02 53 42.064 42.638 124.1 1.1 92 18.8
2025-08-29 00:00 UT 18 37 08.5 -15 03 05 42.078 42.638 123.1 1.1 92 18.8
2025-08-30 00:00 UT 18 37 06.3 -15 03 17 42.092 42.638 122.1 1.1 91 18.8
2025-08-31 00:00 UT 18 37 04.3 -15 03 29 42.106 42.638 121.2 1.2 91 18.8
2025-09-01 00:00 UT 18 37 02.3 -15 03 41 42.121 42.638 120.2 1.2 91 18.9
2025-09-02 00:00 UT 18 37 00.5 -15 03 53 42.135 42.637 119.3 1.2 91 18.9
2025-09-03 00:00 UT 18 36 58.7 -15 04 05 42.150 42.637 118.3 1.2 91 18.9
2025-09-04 00:00 UT 18 36 57.0 -15 04 17 42.165 42.637 117.3 1.2 91 18.9
2025-09-05 00:00 UT 18 36 55.4 -15 04 29 42.180 42.637 116.4 1.2 90 18.9
2025-09-06 00:00 UT 18 36 53.9 -15 04 41 42.195 42.637 115.4 1.2 90 18.9
2025-09-07 00:00 UT 18 36 52.4 -15 04 53 42.210 42.637 114.4 1.2 90 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.