(230) Athamantis |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 15 Sep 2025 | 11.9 | 2.342 AU | 1.881 AU | 18h26m | -12°52' | 104.3° | 24.6° |
Opposition | 5 Dec 2026 | 10.1 | 2.293 AU | 1.309 AU | 04h52m | +18°31' | 175.9° | 1.8° |
(230) Athamantis - 2025-09-15
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 Athamantis are:
e (Eccentricity) : 0.0611874
a (Semimajor axis) : 2.3825833
i (Inclination) : 9.45497
Ω (Longitude of ascending node) : 239.77081
ω (Argument of perihelion) : 139.09056
M (Mean anomaly) : 254.03342
Epoch : 2025 May 05
L (Longitude of perihelion) : 199.24884
B (Latitude of perihelion) : 6.17562
P (Orbital period in years) : 3.68
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
2025-09-15 00:00 UT 18 26 38.9 -12 52 59 1.881 2.342 104.3 24.6 90 11.9
2025-09-15 14:32 UT 18 27 06.1 -12 54 03 1.888 2.341 103.8 24.6 90 11.9
2025-09-16 00:00 UT 18 27 24.0 -12 54 45 1.892 2.341 103.5 24.7 90 11.9
2025-09-17 00:00 UT 18 28 10.6 -12 56 29 1.903 2.340 102.8 24.8 90 11.9
2025-09-18 00:00 UT 18 28 58.5 -12 58 11 1.914 2.340 102.0 24.8 89 11.9
2025-09-19 00:00 UT 18 29 47.8 -12 59 52 1.926 2.339 101.2 24.9 89 11.9
2025-09-20 00:00 UT 18 30 38.5 -13 01 30 1.937 2.338 100.5 25.0 89 11.9
2025-09-21 00:00 UT 18 31 30.6 -13 03 05 1.948 2.338 99.7 25.0 89 11.9
2025-09-22 00:00 UT 18 32 24.0 -13 04 39 1.960 2.337 99.0 25.1 88 12.0
2025-09-23 00:00 UT 18 33 18.7 -13 06 09 1.971 2.336 98.2 25.2 88 12.0
2025-09-24 00:00 UT 18 34 14.7 -13 07 37 1.982 2.336 97.5 25.2 88 12.0
2025-09-25 00:00 UT 18 35 12.0 -13 09 02 1.994 2.335 96.8 25.2 88 12.0
2025-09-26 00:00 UT 18 36 10.6 -13 10 25 2.005 2.334 96.0 25.3 87 12.0
2025-09-27 00:00 UT 18 37 10.4 -13 11 44 2.017 2.334 95.3 25.3 87 12.0
2025-09-28 00:00 UT 18 38 11.4 -13 12 60 2.028 2.333 94.6 25.4 87 12.0
2025-09-29 00:00 UT 18 39 13.6 -13 14 13 2.040 2.332 93.9 25.4 87 12.1
2025-09-30 00:00 UT 18 40 17.0 -13 15 22 2.051 2.332 93.2 25.4 87 12.1
2025-10-01 00:00 UT 18 41 21.6 -13 16 28 2.063 2.331 92.5 25.4 86 12.1
2025-10-02 00:00 UT 18 42 27.2 -13 17 30 2.074 2.330 91.7 25.4 86 12.1
2025-10-03 00:00 UT 18 43 34.0 -13 18 29 2.086 2.330 91.0 25.4 86 12.1
2025-10-04 00:00 UT 18 44 41.9 -13 19 24 2.097 2.329 90.4 25.4 86 12.1
2025-10-05 00:00 UT 18 45 50.9 -13 20 15 2.109 2.328 89.7 25.4 85 12.1
2025-10-06 00:00 UT 18 47 00.9 -13 21 02 2.120 2.328 89.0 25.4 85 12.1
2025-10-07 00:00 UT 18 48 12.0 -13 21 46 2.132 2.327 88.3 25.4 85 12.1
2025-10-08 00:00 UT 18 49 24.1 -13 22 25 2.143 2.327 87.6 25.4 85 12.2
2025-10-09 00:00 UT 18 50 37.2 -13 23 00 2.155 2.326 86.9 25.4 84 12.2
2025-10-10 00:00 UT 18 51 51.3 -13 23 31 2.166 2.325 86.2 25.4 84 12.2
2025-10-11 00:00 UT 18 53 06.4 -13 23 58 2.178 2.325 85.6 25.4 84 12.2
2025-10-12 00:00 UT 18 54 22.4 -13 24 20 2.189 2.324 84.9 25.3 84 12.2
2025-10-13 00:00 UT 18 55 39.3 -13 24 38 2.201 2.323 84.2 25.3 83 12.2
2025-10-14 00:00 UT 18 56 57.2 -13 24 52 2.212 2.323 83.6 25.3 83 12.2
2025-10-15 00:00 UT 18 58 16.1 -13 25 01 2.224 2.322 82.9 25.2 83 12.2
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.