(124) Alkeste |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 6 May 2025 | 11.9 | 2.424 AU | 1.604 AU | 18h01m | -19°22' | 134.9° | 17.1° |
Opposition | 14 Jun 2025 | 11.0 | 2.429 AU | 1.416 AU | 17h36m | -18°23' | 175.0° | 2.1° |
(124) Alkeste - 2025-05-06
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 Alkeste are:
e (Eccentricity) : 0.0783889
a (Semimajor axis) : 2.6299281
i (Inclination) : 2.96344
Ω (Longitude of ascending node) : 187.90891
ω (Argument of perihelion) : 61.65611
M (Mean anomaly) : 2.89910
Epoch : 2025 May 05
L (Longitude of perihelion) : 249.53297
B (Latitude of perihelion) : 2.60790
P (Orbital period in years) : 4.26
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
2025-05-06 00:00 UT 18 01 21.3 -19 22 11 1.604 2.424 134.9 17.1 266 11.9
2025-05-06 09:00 UT 18 01 17.9 -19 21 30 1.601 2.424 135.3 17.0 266 11.9
2025-05-07 00:00 UT 18 01 11.7 -19 20 20 1.596 2.424 135.9 16.8 266 11.9
2025-05-08 00:00 UT 18 01 00.3 -19 18 29 1.587 2.424 136.9 16.5 265 11.9
2025-05-09 00:00 UT 18 00 47.2 -19 16 39 1.579 2.424 137.9 16.2 265 11.9
2025-05-10 00:00 UT 18 00 32.2 -19 14 49 1.571 2.424 138.9 15.9 265 11.8
2025-05-11 00:00 UT 18 00 15.5 -19 13 00 1.563 2.424 140.0 15.5 265 11.8
2025-05-12 00:00 UT 17 59 57.0 -19 11 12 1.555 2.425 141.0 15.2 265 11.8
2025-05-13 00:00 UT 17 59 36.7 -19 09 25 1.547 2.425 142.0 14.9 265 11.8
2025-05-14 00:00 UT 17 59 14.7 -19 07 39 1.540 2.425 143.1 14.5 264 11.7
2025-05-15 00:00 UT 17 58 51.0 -19 05 53 1.532 2.425 144.1 14.1 264 11.7
2025-05-16 00:00 UT 17 58 25.5 -19 04 09 1.525 2.425 145.2 13.8 264 11.7
2025-05-17 00:00 UT 17 57 58.4 -19 02 25 1.518 2.425 146.2 13.4 264 11.7
2025-05-18 00:00 UT 17 57 29.6 -19 00 43 1.512 2.425 147.3 13.0 263 11.7
2025-05-19 00:00 UT 17 56 59.2 -18 59 02 1.505 2.425 148.4 12.6 263 11.6
2025-05-20 00:00 UT 17 56 27.2 -18 57 21 1.499 2.425 149.4 12.2 263 11.6
2025-05-21 00:00 UT 17 55 53.6 -18 55 42 1.493 2.425 150.5 11.9 262 11.6
2025-05-22 00:00 UT 17 55 18.4 -18 54 04 1.487 2.425 151.6 11.5 262 11.6
2025-05-23 00:00 UT 17 54 41.7 -18 52 28 1.481 2.426 152.7 11.0 262 11.5
2025-05-24 00:00 UT 17 54 03.5 -18 50 52 1.476 2.426 153.8 10.6 261 11.5
2025-05-25 00:00 UT 17 53 23.9 -18 49 19 1.470 2.426 154.9 10.2 261 11.5
2025-05-26 00:00 UT 17 52 42.9 -18 47 46 1.465 2.426 156.0 9.8 260 11.5
2025-05-27 00:00 UT 17 52 00.5 -18 46 15 1.461 2.426 157.1 9.4 260 11.4
2025-05-28 00:00 UT 17 51 16.9 -18 44 45 1.456 2.426 158.2 8.9 259 11.4
2025-05-29 00:00 UT 17 50 32.0 -18 43 17 1.452 2.426 159.3 8.5 258 11.4
2025-05-30 00:00 UT 17 49 46.0 -18 41 50 1.448 2.427 160.4 8.1 258 11.4
2025-05-31 00:00 UT 17 48 58.8 -18 40 25 1.444 2.427 161.5 7.6 257 11.3
2025-06-01 00:00 UT 17 48 10.6 -18 39 02 1.440 2.427 162.6 7.2 256 11.3
2025-06-02 00:00 UT 17 47 21.4 -18 37 40 1.437 2.427 163.7 6.7 255 11.3
2025-06-03 00:00 UT 17 46 31.3 -18 36 20 1.434 2.427 164.8 6.3 253 11.3
2025-06-04 00:00 UT 17 45 40.3 -18 35 02 1.431 2.427 165.9 5.9 252 11.2
2025-06-05 00:00 UT 17 44 48.5 -18 33 45 1.428 2.427 167.0 5.4 250 11.2
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.