(404) Arsinoe |
ephemeris |
date |
magn |
radius |
delta |
ra |
dec |
elong |
phase |
Today | 12 Jul 2025 | 13.8 | 2.717 AU | 2.031 AU | 23h32m | -20°00' | 122.6° | 18.4° |
Opposition | 30 Aug 2025 | 13.2 | 2.812 AU | 1.841 AU | 23h09m | -27°00' | 160.2° | 7.0° |
(404) Arsinoe - 2025-07-12
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 Arsinoe are:
e (Eccentricity) : 0.2015119
a (Semimajor axis) : 2.5923356
i (Inclination) : 14.09831
Ω (Longitude of ascending node) : 92.46876
ω (Argument of perihelion) : 120.55674
M (Mean anomaly) : 76.59024
Epoch : 2025 May 05
L (Longitude of perihelion) : 33.79825
B (Latitude of perihelion) : 12.10821
P (Orbital period in years) : 4.17
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
2025-07-12 00:00 UT 23 32 05.3 -20 00 08 2.031 2.717 122.6 18.4 256 13.8
2025-07-12 06:04 UT 23 32 07.3 -20 01 54 2.029 2.718 122.9 18.3 256 13.8
2025-07-13 00:00 UT 23 32 12.7 -20 07 09 2.022 2.719 123.5 18.2 257 13.8
2025-07-14 00:00 UT 23 32 18.6 -20 14 19 2.014 2.721 124.4 17.9 257 13.7
2025-07-15 00:00 UT 23 32 23.0 -20 21 38 2.006 2.723 125.4 17.7 257 13.7
2025-07-16 00:00 UT 23 32 25.8 -20 29 05 1.998 2.725 126.3 17.5 258 13.7
2025-07-17 00:00 UT 23 32 27.0 -20 36 41 1.990 2.727 127.2 17.3 258 13.7
2025-07-18 00:00 UT 23 32 26.7 -20 44 24 1.982 2.729 128.1 17.0 259 13.7
2025-07-19 00:00 UT 23 32 24.9 -20 52 16 1.975 2.731 129.0 16.8 259 13.7
2025-07-20 00:00 UT 23 32 21.4 -21 00 16 1.967 2.733 129.9 16.6 260 13.6
2025-07-21 00:00 UT 23 32 16.4 -21 08 23 1.960 2.735 130.9 16.3 261 13.6
2025-07-22 00:00 UT 23 32 09.7 -21 16 37 1.953 2.737 131.8 16.1 261 13.6
2025-07-23 00:00 UT 23 32 01.5 -21 24 58 1.946 2.739 132.7 15.8 262 13.6
2025-07-24 00:00 UT 23 31 51.7 -21 33 25 1.939 2.741 133.7 15.5 263 13.6
2025-07-25 00:00 UT 23 31 40.2 -21 41 59 1.933 2.743 134.6 15.3 263 13.6
2025-07-26 00:00 UT 23 31 27.2 -21 50 39 1.926 2.745 135.5 15.0 264 13.6
2025-07-27 00:00 UT 23 31 12.6 -21 59 24 1.920 2.747 136.5 14.8 265 13.5
2025-07-28 00:00 UT 23 30 56.5 -22 08 14 1.914 2.749 137.4 14.5 266 13.5
2025-07-29 00:00 UT 23 30 38.7 -22 17 09 1.908 2.751 138.3 14.2 266 13.5
2025-07-30 00:00 UT 23 30 19.4 -22 26 09 1.903 2.753 139.3 13.9 267 13.5
2025-07-31 00:00 UT 23 29 58.6 -22 35 12 1.897 2.755 140.2 13.6 268 13.5
2025-08-01 00:00 UT 23 29 36.2 -22 44 19 1.892 2.757 141.1 13.4 269 13.5
2025-08-02 00:00 UT 23 29 12.3 -22 53 28 1.887 2.759 142.1 13.1 270 13.5
2025-08-03 00:00 UT 23 28 46.9 -23 02 41 1.882 2.760 143.0 12.8 271 13.4
2025-08-04 00:00 UT 23 28 20.0 -23 11 55 1.877 2.762 143.9 12.5 272 13.4
2025-08-05 00:00 UT 23 27 51.7 -23 21 11 1.873 2.764 144.8 12.2 273 13.4
2025-08-06 00:00 UT 23 27 21.9 -23 30 28 1.869 2.766 145.7 11.9 275 13.4
2025-08-07 00:00 UT 23 26 50.6 -23 39 46 1.865 2.768 146.6 11.6 276 13.4
2025-08-08 00:00 UT 23 26 18.0 -23 49 04 1.861 2.770 147.5 11.3 277 13.4
2025-08-09 00:00 UT 23 25 44.0 -23 58 21 1.857 2.772 148.4 11.1 279 13.4
2025-08-10 00:00 UT 23 25 08.6 -24 07 38 1.854 2.774 149.2 10.8 280 13.3
2025-08-11 00:00 UT 23 24 31.9 -24 16 54 1.851 2.776 150.1 10.5 282 13.3
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.